Kosrae Climate

Last updated: January 18, 2025

Kosrae, Micronesia, exemplifies the tropical rainforest climate classified as Af under the Köppen-Geiger system, characterized by consistently warm temperatures throughout the year. The island experiences a minimum temperature of 25°C (78°F) in March, with an average hovering around 27°C (82°F). Peak temperatures can reach 30°C (86°F) in October, reflecting a stable and humid climate conducive to lush vegetation. This climatic profile underpins the rich biodiversity and vibrant ecosystems that define Kosrae, making it a unique destination for both ecological study and tourism.

Kosrae temperature by month

In Kosrae, Micronesia, temperature patterns exhibit remarkable consistency throughout the year, characterized by warm tropical conditions. The minimum temperature remains steady at 25°C (78°F) across all months, while the average temperature typically hovers around 27°C (82°F). Seasonal variation is minimal, with maximum temperatures generally ranging from 29°C (85°F) to 30°C (86°F), notably peaking in August and reaching similar heights in September and October. This slight uptick in temperature during the latter months, combined with minor fluctuations in the average readings, illustrates the stable and uniformly warm climate that defines this picturesque island, fostering a rich tapestry of diverse ecosystems.

Monthly Temperatures in Kosrae, Micronesia

The chart illustrates Kosrae'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.
JanFebMarAprMayJunJulAugSepOctNovDec818181818181818182828181
Data source: Kosrae temperature data aggregated from multiple regional 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.

In Micronesia, the climate in Lelu, Malem, and Tofol exhibits consistent temperature patterns, with minimums around 25°C (78°F) in March and maximums reaching 30°C (86°F) in October. For a detailed look at the monthly temperatures in these locations, you can visit the links for Lelu monthly temperatures in Lelu, Malem monthly temperatures in Malem, and Tofol monthly temperatures in Tofol.

Precipitation Patterns in Kosrae

Kosrae, Micronesia experiences a pronounced wet season, particularly from March to May, during which precipitation peaks dramatically. March stands out with a significant 489 mm (19.2 in) of rainfall, closely followed by May at 553 mm (21.8 in). This deluge is associated with an increase in rainy days, reaching up to 29 days in May alone, demonstrating the island's climatic tendency towards abundant moisture during this time. The months of January and February also see considerable rainfall, measuring 310 mm (12.2 in) and 349 mm (13.7 in), respectively, but the precipitation is more evenly spread throughout the month.

As the year progresses into the drier season, precipitation gradually declines, with October recording the lowest levels at just 214 mm (8.4 in). This downward trend continues through September and August, where rainfall amounts drop to 271 mm (10.7 in) and 300 mm (11.8 in), respectively. Despite these reductions, the island still experiences significant rainfall year-round, with November and December experiencing 344 mm (13.5 in) and 366 mm (14.4 in). Overall, Kosrae's climate is characterized by a consistently high volume of precipitation coupled with numerous rainy days, forming a lush and vibrant environment.

Monthly Average Precipitation in Kosrae, Micronesia

The average monthly precipitation in Kosrae, providing insights into seasonal rainfall patterns and the region's precipitation trends throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec310349489484553410421301271214344366
Data source: Kosrae precipitation data aggregated from multiple regional locations, generated using Copernicus Climate Change Service information.
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Sunshine Duration in Kosrae

In Kosrae, Micronesia, sunshine duration exhibits a distinct seasonal trend, highlighting the island's seasonal shift from winter to summer. As the year progresses from January through August, the number of sunshine hours steadily increases, peaking at 300 hours in August. This growth demonstrates the region's transition into a sunnier, more vibrant summer, with March to July consistently recording elevated sunshine hours of over 270 hours per month. The gradual increase reflects the island's favorable climatic conditions, making these months ideal for outdoor activities and exploration.

Conversely, the latter part of the year sees a slight decline in sunshine hours, particularly noted in November and December, where sunshine tapers to 252 hours and 269 hours, respectively. However, even in these months, sunshine hours remain substantial, ensuring that Kosrae maintains its allure throughout the year. The consistent availability of sunlight, coupled with the peak in August, fosters a lively environment rich in biodiversity and cultural experiences, inviting visitors to enjoy the island’s natural beauty during both its sunniest and slightly cloudier days.

Monthly Sunshine in Kosrae, Micronesia

Monthly sunshine duration represents the total hours of direct sunlight Kosrae receives each month, excluding periods when the sun is obscured by clouds or other obstructions.
JanFebMarAprMayJunJulAugSepOctNovDec216h248h273h253h252h271h285h300h283h291h252h269h
Data source: Kosrae sunshine duration data aggregated from multiple regional locations, generated using Copernicus Climate Change Service information.

Kosrae UV Index Trends

Kosrae, Micronesia, experiences consistently high levels of ultraviolet (UV) radiation throughout the year, with the UV Index consistently falling within the extreme exposure category. The highest readings occur from March to April, where the UV Index reaches 16, indicating a potentially hazardous environment for unprotected skin; a mere 10 minutes of exposure can lead to burns. Even in the months surrounding this peak, such as January and February, the Index remains alarmingly high at 14 and 15, underscoring the importance of rigorous sun protection measures for residents and visitors alike.

As the year progresses, a slight decrease in the UV Index is observed, dropping to 12 by November and December, but it still retains the extreme classification. Even during the summer months of June and July, which show an Index of 13, precautions must be taken. This persistent intensity of UV radiation highlights the necessity for sunscreen, protective clothing, and shade, particularly for those engaging in outdoor activities, ensuring that individuals can safely enjoy the sun-drenched beauty of Kosrae while minimizing the risk of skin damage.

Monthly Maximum UV Index for Kosrae, Micronesia

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Kosrae. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec141516161513131414131212
Data source: Kosrae 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.

Daylight Hours in Kosrae

In Kosrae, Micronesia, daylight duration remains relatively stable throughout the year, reflecting the island's equatorial position. During the first two months of the year, daylight lasts for 11 hours, allowing for ample time to explore and enjoy the island's natural beauty. Starting in March, daylight begins to extend, reaching a consistent 12 hours from March through September. This six-month period of enhanced daylight fosters vibrant outdoor activities, cultural festivals, and ecological studies, providing both residents and visitors with abundant opportunities to appreciate the lush environment.

As the year progresses into October, daylight once again recedes to 11 hours, continuing through December. Despite this slight reduction, the overall consistency in daylight duration throughout the year creates a dependable rhythm for life in Kosrae. This predictability makes planning activities straightforward while highlighting the island's unique tropical charm, where ample sunlight and warm temperatures prevail, ensuring that the natural scenery remains a stunning backdrop for year-round exploration and enjoyment.

Average Monthly Daylight Hours in Kosrae, Micronesia

This chart shows the total daylight hours Kosrae receives each month, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec710h716h724h733h740h744h742h736h727h719h712h708h
Data source: Kosrae daylight hours, calculated based on aggregated data for various regional locations, determined by the times between sunrise and sunset.

Climate Highlights of Kosrae's Popular Destinations

Lelu, Micronesia experiences a warm tropical climate with temperatures consistently ranging from a minimum of 25°C (78°F) to a maximum of 30°C (86°F) throughout the year. Rainfall is significant, especially from March to May, when monthly averages exceed 400 mm, peaking at 553 mm in May. The region benefits from ample sunshine, particularly in August with 300 hours, contributing to a lush environment. Despite the high precipitation in certain months, overall, Lelu maintains a humid and warm atmosphere ideal for diverse flora and fauna. For more details, visit Lelu climate.

Malem, Micronesia experiences a tropical climate characterized by consistent temperatures throughout the year, ranging from a minimum of 25°C (78°F) to a maximum of 30°C (86°F). The average monthly temperature hovers around 27°C (81°F). Precipitation is significant, peaking in May with 553 mm (21.8 in), while October sees the lowest rainfall at 214 mm (8.4 in). Sunshine hours vary, with August receiving the most sunlight at 300 hours. For more detailed information, visit Malem climate.

Tafunsak, Micronesia, enjoys a warm tropical climate with consistent temperatures throughout the year, ranging from a minimum of 25°C (78°F) to a maximum of 30°C (86°F). While January to July sees relatively high precipitation, peaking in May at 553 mm (21.8 in), the rainfall begins to taper off in the latter months, with October receiving just 214 mm (8.4 in). Sunshine hours also vary, reaching a high of 300 hours in August, providing ample daylight. Overall, Tafunsak's climate is characterized by warmth and humidity, making it an ideal region for those who appreciate tropical weather. For more details, visit Tafunsak climate.

Tofol, Micronesia experiences a warm and humid tropical climate, with temperatures consistently ranging from a minimum of 25°C (78°F) to a maximum of 30°C (86°F) throughout the year. Heavy rainfall is common, peaking in May with an average of 553 mm (21.8 in), while drier months like October receive about 214 mm (8.4 in). Sunshine varies seasonally, with July enjoying the highest hours at 285. Despite the frequent rain, Tofol receives substantial sunshine, especially in the mid-year months. For more details, visit Tofol climate.

Utwe, Micronesia enjoys a tropical climate characterized by consistently warm temperatures ranging from a minimum of 25°C (78°F) to a maximum of 30°C (86°F) throughout the year. Precipitation varies significantly, peaking in May at 553 mm (21.8 in) before tapering off in October to 214 mm (8.4 in). Sunshine hours are abundant, with the highest in August at 300 hours, making it one of the sunniest months. This combination of warm temperatures and substantial rainfall contributes to Utwe's lush vegetation and vibrant ecosystems. For more detailed information, visit Utwe climate.

Conclusion

In conclusion, Kosrae, Micronesia, presents a dynamic and vibrant climate characterized by consistently warm temperatures, abundant precipitation, and high UV radiation. The island's sunshine duration and daylight hours create an inviting atmosphere for outdoor pursuits, while extreme UV Index levels emphasize the importance of sun safety for those enjoying its natural beauty. Seasonal trends, such as peak rainfall from March to May and the stable daylight from 11 to 12 hours, further enhance the appeal of this tropical paradise. Overall, Kosrae's unique climatic attributes not only support rich biodiversity but also provide an essential context for the cultural and recreational activities that define life on the island.

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