Last updated: August 21, 2025
July in Hagatna, Guam presents a warm tropical climate, with temperatures ranging from a pleasant 26°C (78°F) to a peak of 29°C (85°F), averaging around 28°C (82°F). The island experiences high humidity levels of approximately 80%, contributing to its lush environment. However, it's also the wettest month, with a staggering total of 276 mm (10.9 in) of rainfall spread across 30 days, ensuring that lush greenery flourishes amidst the warm weather. Visitors can expect a vibrant mix of sunshine and frequent rain showers, making it a true tropical paradise, albeit one requiring an umbrella at the ready.
In Hagatna, Guam, July brings warm and inviting temperatures, making it a perfect month for beach lovers and outdoor enthusiasts alike. With a minimum temperature of 26°C (78°F) and an average hovering around 28°C (82°F), the island enjoys delightful warmth during the day. The maximum temperature reaches a comfortable 29°C (85°F), which is consistent with the trend seen throughout the summer months, reflecting a stable tropical climate. This slight increase in July's temperatures compared to earlier months, like June, underscores a pattern of consistent warmth that characterizes Guam's climate year-round. Whether you’re exploring the vibrant local culture or soaking up the sun, July's inviting temperatures create the perfect backdrop for an unforgettable summer experience.
In July, Hagatna, Guam experiences a significant surge in rainfall, with a staggering 276 mm (10.9 in) of precipitation recorded over the entire month. This amount stands out, as it nearly doubles the previous month's total and marks a peak in the year's precipitation cycle. Notably, July is characterized by 30 rainy days, indicating that residents can expect wet weather almost every day. This trend continues into August, which remains the wettest month of the year with 405 mm (16.0 in), suggesting a distinct rainy season in the early summer months. As rainfall accumulates, it bolsters the region's lush landscapes, making the tranquil beauty of Guam's nature even more vibrant.
In Hagatna, Guam, July experiences a comfortable 80% humidity, aligning with a trend of moderately lower humidity observed in the summer months. After peaking at 84% in the spring, the humidity begins to stabilize, with June also registering at 80%. As the year progresses, August and September maintain similar levels, suggesting a consistent, mild backdrop throughout the summer. This steadiness, punctuated by a slight rise back to 81% in the fall, highlights Hagatna's tropical climate that remains warm and inviting, yet refreshingly manageable during the peak of July.
In July, the UV Index in Hagatna, Guam, remains high at 14, maintaining the extreme exposure category seen throughout the summer months. Following a trend from earlier in the year, the UV Index fluctuates between 13 and 15, indicating consistently intense sun exposure. With a burn time of just 10 minutes, caution is essential for outdoor activities as the risk of skin damage escalates. As the summer progresses into August, the UV Index holds steady, reflecting Guam's tropical climate and the importance of sun safety. For more detailed insights, visit Hagatna UV Index.
UV Risk Categories
In Hagatna, Guam, July shines brightly with approximately 300 hours of sunlight, making it one of the sunniest months of the year. Following the peak of 336 hours in May, July maintains a robust glow, though it marks a slight dip compared to the preceding months of June and May. This trend reflects the typical summer warmth, as sunlight hours begin to taper off in August, which sees 269 hours of sunshine. Overall, July captures the essence of a tropical summer, providing plenty of time for outdoor adventures while effortlessly blending into the vibrant patterns of Guam's annual climate.
In Hagatna, Guam, the likelihood of sunny weather in July takes a noticeable dip, with only a 13% chance of sunshine. This trend reveals a stark contrast to the sunnier months of January to March, where the probabilities are significantly higher, peaking at 63% in March. As the year progresses into the summer months, June and July see the chance of sun drop to their lowest, emphasizing a pattern of increasing cloud cover. The diminished sunlight in July aligns with the prevailing climatic conditions, suggesting that visitors might want to prepare for more overcast skies during this period.
In Hagatna, Guam, July offers a delightful continuation of the island's consistent daylight pattern, with 12 hours of sunlight gracing each day. This trend of extended daylight begins in March and continues through August, providing residents and visitors alike ample time to enjoy the region's stunning beaches and vibrant culture. As the year progresses, the daylight gradually shortens, dipping back to 11 hours by October. The stability of 12-hour days during the summer months not only invites outdoor adventures but also emphasizes Guam's tropical charm, creating an inviting atmosphere year-round.
In July, Hagatna, Guam experiences a moderate average wind speed of 5.5 m/s (12 mph), which marks a slight increase from the lighter breezes of June. This gentle flow creates a pleasant atmosphere, perfect for outdoor activities under the tropical sun. Notably, July is part of a broader pattern where wind speeds begin to stabilize after the more dynamic shifts seen during the earlier months of the year. While the wind is comparatively lighter than the breezy January and December peaks, it contributes to the island's warm and inviting summer ambiance. As the island transitions into the later months, we'll see a gradual rise again, suggesting a renewal of the island’s playful wind energy with the onset of autumn.
Weather in Hagatna varies notably across the year, with each month offering distinct climate conditions. This page compares July’s weather to other months in Hagatna, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather between July and January, July tends to be hotter and considerably wetter. The average temperature in July peaks at 28°C (82°F), with maximums reaching 29°C (85°F), while January's average is slightly lower at 27°C (81°F) and a maximum of 28°C (83°F). However, July sees significantly more rainfall, with 276 mm (10.9 inches) spread over 30 days compared to January's 61 mm (2.4 inches) over 15 days. Humidity levels are also high in both months, with July at 80% and January slightly higher at 83%. For a more detailed look at January weather, you can visit Hagatna weather in January.
In comparing the weather of July and February, it's evident that both months maintain warm temperatures, with July slightly warmer overall. July sees average temperatures ranging from a minimum of 26°C (78°F) to a maximum of 29°C (85°F), while February's temperatures range from 25°C (78°F) to 28°C (83°F). However, July is characterized by significantly higher precipitation, with 276 mm (10.9 in) over 30 days compared to February's 77 mm (3.0 in) spread across 15 days. Plus, humidity levels are quite similar, with July at 80% and February at 82%. For more specifics on February weather, visit Hagatna weather in February.
In comparing the weather between July and March, July tends to be warmer with average temperatures ranging from a minimum of 26°C (78°F) to a maximum of 29°C (85°F), while March's temperatures are slightly cooler, with an average range from 25°C (77°F) to 28°C (83°F). July is also characterized by significantly higher precipitation, receiving 276 mm (10.9 in) over 30 days, compared to March's 53 mm (2.1 in) across 15 days. Additionally, humidity levels remain high in both months, with July at 80% and March slightly higher at 84%. For more detailed information on March's weather, you can visit Hagatna weather in March.
In comparing the weather between July and April, we find that both months feature similar temperature ranges, with July's minimum at 26°C (78°F) and April’s at 25°C (77°F), both averaging around 28°C (82°F). However, July is notably wetter, receiving 276 mm (10.9 in) of precipitation over 30 days compared to April's 94 mm (3.7 in) across 18 days. Additionally, humidity levels are high in both months, though July's average of 80% is slightly lower than April's 84%. For more detailed insights, you can check Hagatna weather in April.
In comparing the weather between July and May, both months experience similar average temperatures, with May showing a minimum of 25°C (78°F) and a maximum of 29°C (84°F), while July's temperatures range from a minimum of 26°C (78°F) to a maximum of 29°C (85°F). However, July is significantly wetter, seeing 276 mm (10.9 in) of precipitation over 30 days, compared to May's 78 mm (3.1 in) over 22 days. Additionally, humidity levels are slightly higher in July at 80%, compared to May's 83%. For a more detailed comparison, you can check Hagatna weather in May.
In comparing the weather between June and July, we see that both months exhibit similar temperature ranges, with June having a minimum of 25°C (78°F) and an average of 28°C (82°F), while July's temperatures are slightly higher with a minimum of 26°C (78°F). Both months share the same maximum temperature of 29°C (85°F) and consistent humidity levels at 80%. However, a notable difference lies in the precipitation; July sees a significant increase with 276 mm (10.9 in) of rain over 30 days, compared to June's 159 mm (6.3 in) across 23 days. This suggests that July is not only wetter but also presents a higher likelihood of rain. For more details on June weather, visit Hagatna weather in June.
July and August exhibit similar temperature profiles, with both months featuring an average temperature of 28°C (82°F) and a maximum of 29°C (85°F). However, August tends to be noticeably wetter, receiving 405 mm (16.0 in) of precipitation compared to July's 276 mm (10.9 in), making August the rainier month despite having the same number of rainy days at 30. Additionally, humidity remains constant at 80% for both months, contributing to a consistently tropical feel. For more detailed information on weather patterns, you can check Hagatna weather in August.
In comparing the weather between July and September, both months feature similar average temperatures, with July having an average of 28°C (82°F) and September maintaining the same average. However, September sees slightly higher maximum temperatures, reaching up to 30°C (86°F) compared to July's 29°C (85°F).
Rainfall is more pronounced in September, with a total precipitation of 375 mm (14.8 in) across 28 days, surpassing July's 276 mm (10.9 in) over 30 days. Humidity levels remain consistent, hovering around 80% in July and slightly increasing to 81% in September. For more detailed insights, you can check Hagatna weather in September.
In comparing the weather between July and October, both months share similar temperature ranges, with minimums around 26°C (78°F) and maximums reaching up to 29°C (85°F). The average temperature remains consistent at 28°C (82°F) for both months. However, October experiences a notable increase in precipitation, accumulating 356 mm (14.0 in) over 29 days compared to July's 276 mm (10.9 in) over 30 days, while humidity levels remain steady at 80%. For more details on October weather specifically, you can visit Hagatna weather in October.
In both July and November, the temperatures are remarkably consistent, with minimums around 26°C (79°F), averages of 28°C (82°F), and maximums peaking at 29°C (85°F). However, July experiences significantly more rainfall, with 276 mm (10.9 in) over 30 days, compared to November's 202 mm (8.0 in) across 26 days. The humidity levels are similar, with July at 80% and November slightly higher at 81%. This makes November slightly drier and potentially more comfortable, making it an appealing month for outdoor activities. For more detailed information, you can view Hagatna weather in November.
In July, the weather features a warm temperature range with a minimum of 26°C (78°F) and an average high of 29°C (85°F), alongside substantial rainfall of 276 mm (10.9 in) spread over 30 days, resulting in high humidity levels around 80%. In contrast, December sees a similar temperature profile, with a minimum of 26°C (78°F) and an average maximum of 29°C (84°F); however, it experiences significantly less precipitation at 105 mm (4.1 in) over 22 days. The humidity also rises slightly to 84%, making December feel somewhat stickier but overall more favorable for outdoor activities. For a detailed look at weather conditions in December, you may visit Hagatna weather in December.
July in Hagatna stands out as a month characterized by high humidity and consistent rainfall, with nearly every day experiencing some precipitation. The temperatures remain relatively stable, hovering around a warm average, making it feel quite tropical. Unlike the drier months, July’s abundant moisture creates a lush, green landscape, but it can also lead to a more tiring heat, impacting outdoor activities. For those wanting to explore the vibrant beauty of Guam, it’s essential to prepare for both the warmth and the frequent showers. To learn more about how Hagatna's weather patterns shift throughout the year, visit Hagatna Climate.