Climate of Marshall Islands

Last updated: April 14, 2025

The climate of the Marshall Islands is characterized by warm temperatures and significant humidity, creating a tropical environment suitable for diverse ecosystems. Annual minimum temperatures hover around 24°C (76°F) in April at Enewetak Atoll, while maximum temperatures can reach up to 30°C (86°F) in October at Lae Atoll. Precipitation varies dramatically, with rainfall as low as 28 mm (1.1 in) in February at Rongelap Atoll and peaking at an impressive 518 mm (20.4 in) in March at Ebon Atoll. Humidity levels further enhance the islands' tropical nature, averaging a minimum of 74% in October at Namdrik Atoll and a maximum of 83% in April at Enewetak Atoll, contributing to a lush and vibrant landscape.

Marshall Islands Climate Zones

The Marshall Islands are characterized by a tropical rainforest climate, as classified by the Köppen-Geiger system, specifically denoted as Af across all its atolls and islands. This means that Ailinglaplap Atoll, Ailuk Atoll, Arno Atoll, and others experience warm temperatures year-round, along with high humidity and significant rainfall, creating a lush and vibrant ecological environment. The abundant precipitation fosters rich biodiversity, making destinations like Majuro Atoll and Kwajalein Atoll not only visually stunning but also vital for various plant and animal species. Whether you’re exploring the serene shores of Utrik Atoll or the breathtaking landscapes of Maloelap Atoll, the climate offers an enchanting backdrop for both adventure and relaxation in this idyllic Pacific paradise.

Köppen-Geiger Climate Classification of Marshall Islands
Climate ZoneDescription
AfTropical rainforest climate with no dry season and high temperatures year-round.

Marshall Islands Temperature by Month

The Marshall Islands enjoy a wonderfully warm tropical climate throughout the year, with monthly temperatures showcasing a delightful consistency. From January to March, both minimums and maximums hover around 24-25°C (76-77°F) and 29-30°C (85-86°F), with Ebon Atoll standing out as the warmest spot in February and March. As the year progresses into the summer months, temperatures maintain this cozy range, with July marking a particular highlight as both the minimum and maximum in Ailinglaplap Atoll reach 25°C (77°F) and 29°C (85°F). The final months of the year, November to December, see a slight retreat in minimum temperatures to 24°C (76°F), yet maximums remain comfortably in the 29-30°C (85-86°F) range, ensuring that this paradisiacal destination remains inviting all year round.

Monthly Temperatures in Marshall Islands

The chart illustrates Marshall Islands's temperature patterns throughout the year, with values aggregated from various locations across the region. It highlights seasonal variations and temperature changes across the months.
JanFebMarAprMayJunJulAugSepOctNovDec818181818181818181818181
Data source: Marshall Islands temperature data aggregated from multiple country locations, generated using Copernicus Climate Change Service information.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

Precipitation Patterns in Marshall Islands

The precipitation patterns in the Marshall Islands reveal notable variability throughout the year. February typically sees the least rainfall, with a mere 28 mm (1.1 in) recorded at Rongelap Atoll, while March brings a striking increase, peaking at 518 mm (20.4 in) in Ebon Atoll. This surge in rainfall is mirrored by a significant uptick in precipitation days, with Namdrik Atoll experiencing up to 29 days of rain in May, showcasing the islands' wetter season. Meanwhile, Utrik Atoll stands out with the fewest rainy days, averaging only 10 in February. Overall, these trends indicate a distinct fluctuation in both total precipitation and rainy days, highlighting the dynamic climate experienced across the atolls.

Precipitation Trends in Marshall Islands

The chart illustrates Marshall Islands's yearly temperature patterns, showing data aggregated from various locations across the region, highlighting seasonal variations and monthly temperature changes.
JanFebMarAprMayJunJulAugSepOctNovDec205169236251311276262254335306313289
Data source: Marshall Islands precipitation data aggregated from multiple country locations, generated using Copernicus Climate Change Service information.
Choose your preferred precipitation unit

Marshall Islands Humidity

The humidity levels in the Marshall Islands exhibit noticeable seasonal trends, with a minimum of 74% in October at Namdrik Atoll and peaking at 83% in April in Enewetak Atoll. This rise in humidity during the spring months suggests a humid climate typical of tropical regions, which can significantly impact both comfort and outdoor activities. As such, visitors and residents alike should be prepared for high humidity levels, particularly as they approach April, when the islands experience their most muggy conditions.

Average Humidity in Marshall Islands

Marshall Islands's Average Monthly Humidity Levels: This chart highlights Marshall Islands's humidity fluctuations throughout the year, making it easy to compare seasonal trends. See how humidity varies month by month and understand Marshall Islands's climate patterns.
JanFebMarAprMayJunJulAugSepOctNovDec80%81%81%79%77%77%76%75%76%75%76%79%
Data source: Humidity data for Marshall Islands generated using information from the Copernicus Climate Change Service.

Marshall Islands UV Index Trends

In March, the ultraviolet (UV) index in the Marshall Islands showcases remarkable intensity, reflecting the region's tropical climate. Utrik Atoll experiences an impressive average daily maximum UVI of 15, while Ebon Atoll takes the lead with an even higher average of 17. This trend highlights the need for increased sun protection measures as the UV risk in these islands remains exceptionally high during this month. Monitoring these levels is crucial for residents and visitors alike to ensure safety under the sun and to enjoy the vibrant beauty of the Marshall Islands without compromising skin health.

Maximum UV Index Levels in Marshall Islands

The chart shows the monthly maximum UV Index (UVI) in Marshall Islands, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec131416161413131414131211
Data source: Marshall Islands UV Index data aggregated from multiple regional locations, generated using Copernicus Climate Change Service information.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

Sunshine Duration in Marshall Islands

The Sunshine Duration across the Marshall Islands reveals distinct seasonal patterns, particularly between the atolls of Mili, Rongelap, and Utrik. In January, sunshine hours vary significantly, with Mili Atoll receiving 209 hours and Rongelap Atoll basking in a brighter 241 hours. This sets the stage for an impressive surge in sunlight during the August peak, where Mili Atoll shines for 292 hours. However, the standout is Utrik Atoll, which enjoys an astonishing 328 hours of sunshine in July, highlighting its role as a sunlit paradise during the mid-year. These trends demonstrate how local geography influences sunshine exposure, making each atoll unique in its climatic offerings.

Monthly Sunshine Duration in Marshall Islands

The Marshall Islands sunshine duration chart shows the total hours of direct sunlight in Marshall Islands each month, excluding cloudy or obstructed periods, and compares the sunshine duration across different months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec226h264h289h271h267h284h294h296h275h283h250h266h
Data source: Marshall Islands sunshine duration data aggregated from multiple country locations, generated using Copernicus Climate Change Service information.

Chance of Sun in Marshall Islands

When considering the likelihood of sunny weather in the Marshall Islands, a notable trend emerges across different atolls and months. For instance, in May, Jaluit Atoll experiences only a 14% chance of sunny skies, indicating a period that may be more susceptible to clouds and rain. In stark contrast, Enewetak Atoll enjoys a significantly brighter 63% likelihood of sun in January, suggesting a peak season for clear weather. This disparity highlights the seasonal variations in sun exposure, making it essential for travelers to plan accordingly based on their destination and time of year.

Percentage of Sunny Days in Marshall Islands

The chart illustrates the percentage of sunny days in Marshall Islands throughout the year. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Marshall Islands experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec45%41%22%26%19%40%32%39%32%33%21%28%
Data source: Marshall Islands chance of sun data, generated using information from the Copernicus Climate Change Service.

Average Daylight Hours Across the Marshall Islands

In the Marshall Islands, particularly in Enewetak Atoll, daylight hours exhibit a distinct seasonal variation that reflects the region's tropical climate. During December, residents and visitors can enjoy approximately 11 hours of sunlight, providing a cozy, shorter day that complements the cooler atmosphere of the season. As the year progresses into June, this precious daylight expands to about 12 hours, allowing for longer basking in the sun amidst the vibrant scenery of the islands. This gradual increase not only enhances the island's breathtaking beauty but also encourages outdoor activities and cultural experiences throughout the lush, sunlit days of the mid-year.

Average Monthly Daylight Hours in Marshall Islands

This chart shows the total daylight hours Marshall Islands receives each month, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec11h 44m11h 52m12h 4m12h 16m12h 26m12h 31m12h 28m12h 20m12h 8m11h 56m11h 46m11h 41m
Data source: Marshall Islands daylight hours, calculated by summing the hours between sunrise and sunset for each day.

Climate Breakdown by Marshall Islands Region

The climate in Ailinglaplap Atoll is characterized by warm temperatures and high humidity throughout the year, with average daily highs consistently reaching around 27°C (81°F). The months of May through November see increased rainfall, peaking in September with an impressive 335 mm (13.2 in), marking the region's wetter season. Humidity levels hover between 75% and 81%, creating a tropical atmosphere that feels both lush and vibrant. Visitors can expect warm breezes and a steady rhythm of rain, blending seamlessly with the island's stunning landscapes. For more detailed climatic information, check out Ailinglaplap Atoll climate.

Nestled in the heart of the Pacific, Ailuk Atoll enjoys a tropical climate characterized by warm temperatures year-round, hovering between 25°C (77°F) and 29°C (84°F). Although the weather remains consistently pleasant, be prepared for significant rainfall, particularly from August to October, where monthly precipitation can exceed 250 mm (9.8 in). This lush environment is complemented by high humidity levels ranging from 76% to 83%, creating an inviting yet tropical atmosphere. Whether basking in sunny days or experiencing occasional showers, Ailuk Atoll offers a unique and vibrant climate ideal for exploration. For more detailed insights, visit Ailuk Atoll climate.

Nestled in the heart of the Pacific, Arno Atoll enjoys a consistently warm tropical climate with temperatures hovering between 25°C and 30°C (78°F and 85°F) throughout the year. While the weather is generally pleasant, monthly rainfall varies significantly, peaking in May with 416 mm (16.4 in) and tapering off to around 157 mm (6.2 in) in February. High humidity levels, averaging around 80%, contribute to the lush beauty of this atoll, creating a vibrant ecosystem that thrives amidst the warmth and moisture. For more insights into the seasonal weather patterns, check out the detailed Arno Atoll climate.

Nestled in the Pacific, Aur Atoll experiences a tropical climate characterized by warm temperatures year-round, consistently averaging around 27°C (81°F) with highs peaking at 29°C (84°F). While this paradise enjoys its warm embrace, the rainy season peaks from May to October, with October often recording the highest rainfall at 356 mm (14.0 in). Humidity levels fluctuate between 75% and 82%, adding to the lush vibrancy of its landscapes. For those seeking a slice of tropical heaven, understanding the weather nuances can enhance your experience. Discover more about the region's unique climate in our detailed guide on Aur Atoll climate.

Situated in the heart of the Pacific, Ebon Atoll boasts a tropical climate characterized by warm temperatures year-round, consistently hovering around 27°C (81°F) on average. While daytime highs can reach a balmy 30°C (86°F) in the hotter months, the humidity remains a constant companion, lingering around 76%. Rainfall varies significantly, with March recording the highest precipitation at a staggering 518 mm (20.4 in), while October enjoys the driest spells with only 164 mm (6.5 in). Visitors can expect lush greenery and vibrant ecosystems due to this tropical climate, making it a unique destination year-round. For more detailed information about the weather patterns, check out Ebon Atoll climate.

Enewetak Atoll welcomes visitors with its tropical climate, where temperatures gracefully hover between 24°C and 29°C (75°F to 85°F) throughout the year. The humidity levels remain high, usually around 80%, creating a lush environment. However, be prepared for seasonal rainfall, as August and October bring the heaviest showers, with over 200 mm (7.9 in) of precipitation. This stunning atoll's climate offers an inviting escape for those seeking warmth and natural beauty. Discover more about the unique weather patterns in this enchanting locale at Enewetak Atoll climate.

Jabat Island, located in the stunning Marshall Islands, enjoys a tropical climate characterized by consistently warm temperatures year-round, ranging from a pleasant 25°C (78°F) to a maximum of 30°C (86°F). While the average temperature remains steady around 27°C (81°F), the island experiences a notable increase in precipitation during the latter part of the year, particularly from May to December, where rainfall can soar beyond 300 mm (11.9 in). Humidity levels hover between 75% and 81%, adding a tropical feel to the atmosphere but also ensuring that visitors remain refreshed by the surrounding ocean breezes. For a more detailed look, explore the Jabat Island climate.

Nestled in the heart of the Pacific, Jaluit Atoll boasts a tropical climate characterized by consistently warm temperatures throughout the year, with averages hovering around 27°C (81°F). While daytime highs can reach up to 30°C (86°F) in the summer months, the nights remain balmy, rarely dipping below 25°C (78°F). The region experiences considerable rainfall from May to November, peaking in May with a staggering 442 mm (17.4 in), enhancing the lush greenery that defines this picturesque atoll. Humidity levels remain high, averaging around 76%, which contributes to the rich biodiversity and vibrant ecosystems. For more detailed climatic insights, visit the Jaluit Atoll climate.

Kili Island in the Marshall Islands enjoys a tropical climate with consistently warm temperatures year-round, typically ranging from 25°C to 30°C (78°F to 86°F). Humidity levels hover around 75% to 81%, creating a lush, vibrant environment. While the island experiences its highest precipitation from May to July, reaching up to 470 mm (18.5 in), the rest of the year remains relatively wet yet delightful. With an average rainfall spread across the months, Kili Island's climate is perfect for those who appreciate a warm, tropical escape. For more detailed information, explore the Kili Island climate.

Nestled in the vibrant beauty of the Pacific, Kwajalein Atoll enjoys a tropical climate characterized by warm temperatures year-round, with averages hovering around 27°C (81°F). Here, each month brings its share of precipitation, peaking in the late months of the year with October and November receiving over 300 mm of rain, making it an essential factor for visitors to consider. Humidity remains high, generally between 76% to 82%, contributing to the lush environment that envelops the atoll. For those looking to embrace the allure of this idyllic destination, understanding the local climate is essential; dive deeper into the details by visiting Kwajalein Atoll climate.

The climate in Lae Atoll, Marshall Islands, offers a warm tropical experience year-round, with average temperatures consistently hovering around 27°C (81°F). January to December sees minimal fluctuations in temperature, where highs typically peak at 29-30°C (84-86°F). However, expect significant precipitation, especially from May through November, with monthly totals often exceeding 250 mm (9.8 in), peaking in November with 333 mm (13.1 in). Humidity averages around 82% at the start of the year, gradually easing to 76% by October, creating a lush, vibrant environment. For more detailed insights on the weather patterns, check out Lae Atoll climate.

Nestled in the heart of the Marshall Islands, Lib Island boasts a tropical climate that is both warm and inviting. Throughout the year, temperatures hover between 25°C (78°F) and 30°C (86°F), ensuring a pleasant escape for visitors seeking sun-kissed shores. However, the island does experience a significant amount of rainfall, particularly between May and November, when monthly totals can reach over 370 mm (14.6 in). Despite this, the humidity remains consistent, averaging around 81%, which adds to the island's lush beauty and vibrant ecosystem. For a closer look at what to expect, explore the detailed information on Lib Island climate.

Nestled in the heart of the Pacific, Likiep Atoll experiences a warm tropical climate year-round, with temperatures consistently hovering between 25°C (78°F) and 29°C (84°F). While the humidity maintains a robust level of around 82% most months, especially in January through March, the island’s charm lies in its lush landscapes nurtured by significant rainfall, peaking in October at 301 mm (11.8 in). The tropical showers tend to be at their heaviest from August to October, ensuring vibrant greenery and a thriving ecosystem. For those seeking a paradise where the weather is a warm embrace, look no further than this island gem. Discover more about this enchanting destination in detail at the Likiep Atoll climate.

Nestled in the heart of the Pacific, Majuro Atoll boasts a tropical climate characterized by consistently warm temperatures, hovering around 27°C (81°F) throughout the year. While daily highs often reach up to 30°C (85°F) in the warmer months, the island's humidity generally remains high, ranging from 75% to 81%, lending a lush vibrancy to its landscapes. Rainfall patterns reveal substantial precipitation, particularly during the summer, with May often experiencing the heaviest downpour at 416 mm (16.4 in). Visitors can expect a lush paradise ideal for exploration, though they should be prepared for sporadic showers. Discover more about the region's weather patterns at Majuro Atoll climate.

Maloelap Atoll enjoys a tropical climate characterized by warm temperatures year-round, with averages lingering around 27°C (81°F). While the daily highs reach up to 29°C (85°F) during the wettest months from August to October, the humidity remains relatively high, fluctuating between 75% and 82%. Precipitation peaks in this period, with October witnessing the heaviest rainfall at 329 mm (12.9 in), making it an ideal time for lush landscapes. The mix of warm weather and notable rainfall creates a vibrant ecosystem perfect for exploration. For more detailed insights, visit the Maloelap Atoll climate page.

The climate on Mejit Island in the Marshall Islands is characterized by warm temperatures and high humidity year-round. Average daily temperatures hover around 27°C (81°F), with highs reaching up to 29°C (85°F) during the drier months of May to October. While the island enjoys relatively steady warmth, precipitation varies significantly, particularly from August to October, when average rainfall can exceed 250 mm (9.9 in), peaking in October. Despite the occasional heavy downpour, the lush landscape and vibrant marine life thrive in this tropical paradise, making it an enchanting destination. For more detailed insights, visit the Mejit Island climate.

Nestled in the heart of the Pacific, Mili Atoll enjoys a tropical climate that remains relatively stable throughout the year. With average temperatures hovering around 27°C (81°F) and peak highs reaching 30°C (86°F) in November, visitors can expect warm, inviting weather. However, it's important to note that the atoll receives significant rainfall, particularly in the wet months from May to December, with January averaging 299 mm (11.8 in) of precipitation. Humidity levels remain high, typically around 76%, contributing to the lush, vibrant environment that defines this stunning locale. For more detailed insights, check out the full Mili Atoll climate.

Namdrik Atoll experiences a warm and humid tropical climate, with temperatures consistently ranging from a minimum of 25°C (78°F) to an average of 27°C (81°F) throughout the year. The hottest month is typically August, where temperatures can peak at 30°C (86°F). However, the region is also known for its significant rainfall, especially in March and May, where precipitation can soar to 430 mm (16.9 in) and 500 mm (19.7 in), respectively. With humidity levels averaging around 80%, visitors can expect a balmy atmosphere year-round. For more details, check out the Namdrik Atoll climate.

Nestled in the heart of the Marshall Islands, Namu Atoll experiences a tropical climate characterized by consistently warm temperatures that hover around 27°C (81°F) year-round. While the island enjoys pleasant highs of up to 30°C (86°F) in October, it's the humidity that often enhances the tropical feel, peaking at 80% in January. Rainfall varies dramatically throughout the year, with November typically being the wettest month, receiving about 315 mm (12.4 in) of rain. This blend of warmth, humidity, and seasonal showers creates a lush landscape that's truly breathtaking. Explore more about the weather patterns and conditions in this paradise at Namu Atoll climate.

Rongelap Atoll, nestled in the heart of the Marshall Islands, boasts a consistently warm and inviting climate throughout the year. Temperatures typically range from a pleasant 24°C (76°F) in January to a peak of 29°C (84°F) during the hotter months of June to November, making it a tropical paradise for visitors. However, it's also a region of significant rainfall, particularly from July to October, where monthly precipitation can exceed 200 mm (7.9 in), creating a lush, vibrant landscape. Humidity levels hover around 80%, lending an invigorating air to the atmosphere, which is perfectly balanced by the gentle ocean breezes. For more insights on this idyllic climate, explore Rongelap Atoll climate.

Ujae Atoll in the Marshall Islands boasts a tropical climate characterized by consistently warm temperatures throughout the year, with averages hovering around 27°C (81°F) and maximums often reaching 29°C (84°F). The region experiences a marked increase in precipitation during the middle of the year, particularly in October and November, making it the rainiest period with over 328 mm (12.9 in) of rainfall. Humidity remains relatively high, generally around 80%, creating a lush and vibrant environment. Despite the occasional downpour, the year-round warmth makes Ujae Atoll a paradise for those seeking sun and adventure. For more detailed weather insights, check out the Ujae Atoll climate.

Nestled in the heart of the Pacific, Utrik Atoll boasts a tropical climate characterized by warm temperatures year-round. With average temperatures hovering around 27°C (80°F), highs can reach 29°C (84°F) in the summer months. However, the atoll also experiences considerable rainfall, particularly from August to October, when monthly precipitation can soar to nearly 250 mm (9.9 in). The humidity remains relatively high, typically around 80%, adding to the island's lush and vibrant atmosphere. For more detailed information, visit Utrik Atoll climate.

Nestled in the heart of the Marshall Islands, Wotho Atoll basks in a tropical climate marked by warm temperatures year-round, typically ranging from a minimum of 25°C (77°F) to a maximum of 29°C (84°F). The islands experience a seasonal shift in precipitation, peaking between August and November when rainfall soars to an average of over 200 mm per month, creating a lush, vibrant landscape. Humidity remains high, hovering around 80%, which adds a touch of tropical richness to the air. Despite the rain, the consistently warm temperatures make Wotho a warm-weather paradise for those seeking sun-drenched adventure throughout the year. For a deeper dive into the nuances of this enchanting climate, check out Wotho Atoll climate.

Nestled in the heart of the Pacific, Wotje Atoll enjoys a tropical climate that remains relatively consistent throughout the year. Temperatures typically hover between 25°C and 29°C (77°F to 85°F), providing a warm embrace regardless of the season. However, visitors should prepare for the rainy months from May to October, when precipitation peaks, with August and October seeing the heaviest rainfall exceeding 250 mm (10 inches). Despite the humidity level averaging around 81%, the gentle ocean breezes make it a haven for those seeking sun-soaked adventures. For a deeper dive into the yearly climate patterns, explore the details on Wotje Atoll climate.

Summary and Key Takeaways on the Climate of the Marshall Islands

The climate of the Marshall Islands is characterized by its warm temperatures, high humidity, and distinct precipitation patterns. Throughout the year, temperatures range from a mild 24°C (76°F) in April at Enewetak Atoll to a peak of 30°C (86°F) in October at Lae Atoll. This tropical environment is accompanied by varying rainfall, with February recording a low of 28 mm (1.1 in) in Rongelap Atoll and March experiencing a dramatic spike to 518 mm (20.4 in) at Ebon Atoll, highlighting a seasonal shift towards wetter conditions. Humidity levels contribute to the island's tropical feel, averaging 74% in October at Namdrik Atoll and climbing to 83% in April at Enewetak Atoll. Overall, the climate presents a vibrant interplay of warmth and moisture, shaping the unique environment and lifestyle of the Marshall Islands.