Last updated: August 21, 2025
In June, Hagatna, Guam experiences warm tropical weather characterized by a maximum temperature of 29°C (85°F) and an average temperature of 28°C (82°F). The nights are pleasantly balmy, with a minimum temperature reaching 25°C (78°F). This month is also notably wet, receiving an average precipitation of 159 mm (6.3 in) over 23 days, which contributes to a humidity level of approximately 80%. Visitors can expect lush landscapes and vibrant surroundings, though it's wise to prepare for potential rain showers throughout their stay.
In Hagatna, Guam, June marks the continuation of the warm tropical climate, featuring a minimum temperature of around 25°C (78°F) and a comfortable average of 28°C (82°F). Daytime temperatures reach their peak at approximately 29°C (85°F), reflecting a slight increase compared to previous months. This trend of consistent warmth starts in January and maintains a steady climate, with only minor fluctuations throughout the year; however, June feels distinctively vibrant as it transitions into the heart of summer. As the temperatures gently rise, residents and visitors alike can enjoy the balmy evenings and sunny days, perfect for outdoor activities and beach adventures.
June marks a significant shift in precipitation patterns for Hagatna, Guam, as the island experiences a dramatic increase in rainfall. With 159 mm (6.3 in) of rain falling over 23 days, June establishes itself as a precursor to the island's wet season. This surge in precipitation is evident when compared to the preceding months, with May's 78 mm (3.1 in) and only 22 rainy days. As summer approaches, the rainfall escalates, laying the groundwork for July's peak of 276 mm (10.9 in), which draws even closer to the height of the wet season. The gradual rise in both the volume and frequency of rain in June suggests an impending shift towards more intense weather, hinting at the lush and vibrant landscape that characterizes this tropical paradise as it embraces the rainy months ahead.
In June, Hagatna, Guam experiences a slight dip in humidity, with levels averaging 80%. This marks a trend of gradual decrease from the typically higher levels seen in the earlier months of the year, where humidity fluctuated between 82% and 84%. Interestingly, June's humidity aligns with neighboring months, July and August, which also maintain the same 80% level. As the year progresses, humidity slightly rebounds in September and November, suggesting a pattern of fluctuation that characterizes Guam’s tropical climate. Overall, while June offers a brief respite from the peak humidity months, it remains comfortably humid, true to the island's enchanting weather.
As June rolls into Hagatna, Guam, residents can expect a UV Index of 14, categorizing exposure as extreme and revealing a rapid trend of consistently high solar intensity throughout the year. Following a peak in March and April at 15, the UV Index slightly dips in May but bounces back to 14 in June, paralleling the figures seen in July and August. This continuity highlights the importance of remaining vigilant against sun exposure, as the recommended burn time remains a brief 10 minutes. With similar readings all summer long, now is the perfect time to prioritize skin protection while enjoying the beautiful island sunshine. For detailed UV index information, visit Hagatna UV Index.
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In Hagatna, Guam, June shines brightly with an impressive 319 hours of sunshine, continuing the trend of long, sunny days that begins in spring. Following a peak of 336 hours in May, the sunlight remains abundant as summer approaches, though it dips slightly as July rolls in with 300 hours. This gradual decrease hints at the typical summer pattern where cloud cover may increase. The months leading up to June showcase a steady climb in sunlight, from 232 hours in January to a glorious high in May, marking the transition into the vibrant summer months. As the year progresses, June stands out as a splendid time for soaking up the sun before the days start to shorten again in the later months.
June in Hagatna, Guam presents a moderate 35% chance of sunny weather, marking a notable decline from the sunnier days of March, which boasts a 63% chance. As the island transitions from spring into summer, sunshine becomes notably scarcer, continuing a downward trend that begins in April with 38% and continues through May at 34%. The likelihood of clear skies dips dramatically in July and August, plunging to 13% and 5% respectively, signaling the onset of the rainy season. Therefore, while June offers a blend of sunny moments amidst rising humidity, those dreaming of endless sunshine may want to plan for occasional rain.
In Hagatna, Guam, the month of June is characterized by a consistent 12 hours of daylight, aligning with the broader trend observed from March to August, where the island enjoys equal daylight hours. This period of extended sunlight not only enhances outdoor activities but also provides a warm and inviting atmosphere as summer approaches. Following June, daylight duration remains stable through July and August, ensuring that the vibrant outdoor lifestyle thrives. As the year progresses into the latter months, daylight gradually decreases, settling back to 11 hours from October through December, marking a gentle transition into the cooler seasons. Overall, June serves as a peak within a harmonious cycle of daylight that reflects the tropical rhythm of Guam’s climate.
In June, Hagatna, Guam experiences a noticeable drop in average wind speed, dipping to 4.7 m/s (10 mph). This marks a continuation of the trend from April and May, where wind speeds varied significantly, peaking at 7.9 m/s (18 mph) in May before settling down. Following June, the winds gradually pick up again during July, reaching 5.5 m/s (12 mph). This seasonal ebb and flow showcases the island's unique climatic patterns, where the breezy conditions of the earlier months give way to a calmer atmosphere, inviting residents and visitors to enjoy the tranquil beauty of summer in Guam.
Weather in Hagatna varies notably across the year, with each month offering distinct climate conditions. This page compares June’s weather to other months in Hagatna, focusing on differences in temperature, rainfall, humidity, and UV levels.
In June, the weather tends to be warmer and wetter compared to January, with average temperatures ranging from a minimum of 25°C (78°F) to a maximum of 29°C (85°F). The month is characterized by high humidity at 80% and significant rainfall, totaling 159 mm (6.3 in) over approximately 23 days. Conversely, January offers slightly cooler conditions, with temperatures averaging between 25°C (77°F) and 28°C (83°F). This month experiences less precipitation, totaling 61 mm (2.4 in) over about 15 days, along with a slightly higher humidity level of 83%. For more detailed insights, you can check Hagatna weather in January.
June and February both showcase warm temperatures, but June tends to be slightly more humid and precipitation-heavy. In June, the average temperature hovers around 28°C (82°F) with a minimum of 25°C (78°F) and a maximum of 29°C (85°F), accompanied by significant rainfall of 159 mm (6.3 in) across 23 days. In contrast, February averages a slightly lower temperature of 27°C (80°F), with similar minimum and maximum figures of 25°C (78°F) and 28°C (83°F) respectively. The month sees considerably less rainfall at 77 mm (3.0 in) over 15 days. While both months maintain high humidity levels—80% in June and 82% in February—February offers a drier alternative for those looking to experience pleasant tropical weather. For more details, you can visit Hagatna weather in February.
In comparing the weather between June and March, it is evident that both months experience warm temperatures, with March being slightly cooler overall. In June, temperatures range from a minimum of 25°C (78°F) to a maximum of 29°C (85°F) with an average of 28°C (82°F), while March sees a similar range with a minimum of 25°C (77°F) and a maximum of 28°C (83°F), averaging at 27°C (81°F). However, June is significantly wetter, with 159 mm (6.3 in) of precipitation over 23 days, compared to March's 53 mm (2.1 in) over just 15 days. Additionally, humidity levels are slightly lower in March at 84% versus 80% in June, making March marginally more comfortable. For more details, you can check Hagatna weather in March.
In comparing the weather between June and April, both months have similar temperature ranges, with June experiencing slightly higher averages: a minimum of 25°C (78°F) and an average of 28°C (82°F), compared to April's min of 25°C (77°F) and average of 27°C (81°F). Both months also peak at 29°C (84°F to 85°F). However, June is notably wetter, receiving 159 mm (6.3 in) of rainfall over 23 days, whereas April sees only 94 mm (3.7 in) across 18 days. Additionally, April's humidity is slightly higher at 84% compared to June's 80%. For more details, you can check Hagatna weather in April.
In both June and May, the weather remains consistently warm, with minimum temperatures hovering around 25°C (78°F) and average temperatures at 28°C (82°F). However, June exhibits slightly more rainfall, with a total precipitation of 159 mm (6.3 in) over 23 days, compared to May's 78 mm (3.1 in) across 22 days. The humidity is marginally lower in June at 80%, while it stands at 83% in May. For more details on May's weather patterns, you can refer to Hagatna weather in May.
In comparing the weather patterns of June and July, both months experience similar average temperatures, with minimums around 25-26°C (78°F) and maximums reaching 29°C (85°F). However, July is notably wetter, with total precipitation of 276 mm (10.9 inches) over 30 days, in contrast to June's 159 mm (6.3 inches) over 23 days. Despite the increased rainfall in July, humidity remains consistent at 80% for both months, leading to a similarly muggy atmosphere. For more detailed insights about July's weather, you can visit Hagatna weather in July.
In comparing the weather between June and August, both months share similar temperature profiles, with minimums at 25°C (78°F), average temperatures around 28°C (82°F), and maximums reaching 29°C (85°F). However, August experiences significantly higher rainfall, totaling 405 mm (16.0 in) over 30 days, compared to June's 159 mm (6.3 in) over 23 days. Despite the increase in precipitation, humidity levels remain constant at 80% in both months. For more detailed information, you can check Hagatna weather in August.
In June, the weather features consistently warm temperatures with a minimum of 25°C (78°F), an average of 28°C (82°F), and a maximum of 29°C (85°F). However, this month also experiences significant rainfall, totaling 159 mm (6.3 in) over 23 days, accompanied by high humidity levels of 80%. In contrast, September maintains similar temperatures, with a minimum of 25°C (77°F), an average of 28°C (82°F), and a slightly higher maximum of 30°C (86°F). However, September sees a notable increase in precipitation, with 375 mm (14.8 in) spread over 28 days, and humidity rises just slightly to 81%. For more details, check Hagatna weather in September.
When comparing the weather in June and October, both months share a remarkably similar temperature profile, with minimums around 25°C (78°F), average temperatures at 28°C (82°F), and maximums peaking at 29°C (85°F). However, October experiences significantly increased precipitation, totaling 356 mm (14.0 in) over 29 days, compared to June's 159 mm (6.3 in) over 23 days. Despite the higher rainfall, humidity levels remain consistent at 80% in both months, creating a humid climate throughout. For more details, check out Hagatna weather in October.
In June, the weather features warm temperatures with a minimum of 25°C (78°F) and averages around 28°C (82°F), peaking at a maximum of 29°C (85°F). The month is characterized by significant rainfall as well, with around 159 mm (6.3 in) of precipitation spread over 23 days, resulting in a humidity level of 80%.
In contrast, November showcases slightly warmer temperatures, with a minimum of 26°C (79°F) and similar averages and maximums as June, maintaining 28°C (82°F) and 29°C (85°F) respectively. However, November experiences higher precipitation, totaling 202 mm (8.0 in) over 26 days, leading to a humidity level that is marginally higher at 81%. For more detailed information on November weather, visit Hagatna weather in November.
June and December share similar temperature ranges, with June displaying a slightly higher average temperature of 28°C (82°F) compared to December’s average of 27°C (81°F). Both months experience maximum temperatures of around 29°C (84-85°F), but June is notably wetter, receiving 159 mm (6.3 in) of precipitation over 23 days, while December sees only 105 mm (4.1 in) of rain over 22 days. Additionally, humidity levels are slightly higher in December at 84% compared to June's 80%. For more details on December weather, you can visit Hagatna weather in December.
As June arrives in Hagatna, its weather distinctly marks the transition into the heart of the tropical season. With average temperatures hovering around 28°C (82°F), it's consistently warm, but the month also brings a notable increase in rainfall. June typically sees nearly three-quarters of the month imbued with precipitation, resulting in a humidity level of approximately 80%, which can feel quite sticky compared to the drier months preceding it. This blend of warmth and moisture sets the stage for lush, vibrant landscapes, making it a unique time to experience Hagatna’s natural beauty. For more insights into the region’s climate patterns, check out Hagatna Climate.