Last updated: August 21, 2025
May in Hagatna, Guam is characterized by warm temperatures and considerable humidity, making it an ideal time for those who enjoy tropical climates. With a maximum temperature reaching 29°C (84°F) and an average of 28°C (82°F), visitors can expect pleasant warm days. The night brings a slight relief with minimum temperatures of around 25°C (78°F). However, the weather is marked by high humidity, averaging 83%, and significant rainfall, totaling 78 mm (3.1 in) over approximately 22 days. This blend of warmth and moisture creates a lush, vibrant environment, perfect for exploring the natural beauty of Guam’s landscapes.
In May, Hagatna, Guam, experiences a delightful transition into the warmer months, with temperatures reflecting a subtle rise throughout the spring. The minimum temperature holds steady around 25°C (78°F), while the average temperature nudges up to 28°C (82°F), signaling a more inviting climate. With daytime maximums reaching 29°C (84°F), this month offers a comfortable balance between warmth and humidity, making it an ideal time for outdoor adventures and beach outings. As the island gears up for the summer, May sets the stage with pleasant weather, inviting both locals and visitors to bask in the tropical beauty of Guam.
May in Hagatna, Guam marks a notable transition in the island's weather, as the precipitation begins to ramp up significantly. This month received 78 mm (3.1 in) of rainfall, which is slightly above the average for the year, and is accompanied by a notable increase in rainy days—22 in total. This trend of increasing precipitation foreshadows the heavy rains that characterize the upcoming months of June and July, when an average of 159 mm (6.3 in) and 276 mm (10.9 in) of rain respectively is expected. The progressive rise in both rainfall amounts and days hints at a shift toward a more humid and tropical climate as summer approaches, making May a pivotal month in Hagatna's annual precipitation cycle.
In Hagatna, Guam, May brings a relative humidity of 83%, continuing the trend of high humidity that characterizes the region throughout the year. This month sits comfortably between April's 84% and June's decline to 80%, suggesting a slight easing as summer approaches. The consistency of humidity levels, fluctuating only a few percentage points, highlights the tropical climate of the area, where humidity remains predominantly high from January's 83% down to 80% during the height of summer. As the seasons change, residents and visitors alike can expect the tropical embrace of May to maintain that characteristic warmth, making it a month rich in tropical vibes and lively weather.
In May, Hagatna, Guam experiences a UV Index of 13, categorizing exposure as extreme with a burn time of just 10 minutes. This slight dip from April's peak of 15 aligns with a generally high UV Index trend observed throughout the year. From January to June, the UV Index remains consistently high, underscoring the need for effective sun protection, especially as locals and visitors engage in outdoor activities. As the season shifts toward summer, maintaining awareness of these UV levels becomes crucial. For more detailed UV indexing information, visit Hagatna UV Index.
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As the calendar turns to May, Hagatna, Guam basks in an impressive 336 hours of warm sunshine, marking it as the sunniest month of the year. This delightful peak is a standout against the backdrop of the previous months, where sunlight hours steadily increased from 232 in January. Following May, although June also boasts a substantial 319 hours, there's a noticeable dip as summer unfolds, with July reducing to 300 hours and August to 269 hours. Interestingly, after the vibrant highs of late spring, the sunlight hours gradually decline through the fall months, highlighting a seasonal ebb that wraps up the year slightly brighter than it began. Overall, May shines as a pivotal moment of abundant sunshine, inviting both locals and visitors to revel in the island's radiant warmth before the slower rhythm of summer settles in.
In Hagatna, Guam, the likelihood of sunny weather in May takes a notable dip, with only a 34% chance of sunshine. This decrease comes after a promising March, where the sun shines 63% of the time, and a relatively decent 50% in January. However, as we transition into warmer months, sunny days seem to wane, with April already showing a decline to 38%. This trend continues into June, where the likelihood stabilizes at 35%. Overall, while May does not offer the most promising weather conditions compared to earlier months, it retains better chances for sun than the intense heat of July and the cloudier days of August, making it a modest yet worthy month for outdoor adventures.
In Hagatna, Guam, daylight duration follows a consistent pattern throughout the year, reflecting the region's tropical climate. From January to April, residents enjoy a gradual increase, starting at 11 hours of daylight in winter and reaching 12 hours by March. The trend stabilizes in May with 12 hours of daylight, continuing through to August. This period of consistent daylight provides ample time for outdoor activities and beach fun. As autumn approaches, daylight begins to decrease again, returning to 11 hours in October and remaining consistent through December. This cyclical rhythm of light and dark reinforces the allure of Guam’s wonderful weather year-round.
May in Hagatna, Guam, brings a refreshing breeze with an average wind speed of 7.9 m/s (18 mph), marking a notable recovery from April's calmer conditions. This uptick in wind, reminiscent of the sturdier gusts of January and December, adds a lively energy to the coastal atmosphere. Notably, February through April witnessed a decline in wind speeds, with April dipping to only 4.9 m/s (11 mph), the year’s lowest. However, as May arrives, winds start to pick up, signaling a transition towards the more vibrant months ahead. With such heralding gusts, May serves as a perfect reminder that the winds of Hagatna are not just a backdrop but an invigorating force of nature that complements the island's charm.
Weather in Hagatna varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Hagatna, focusing on differences in temperature, rainfall, humidity, and UV levels.
May and January exhibit similar warm temperatures, with January typically experiencing slightly lower averages. In January, temperatures range from a minimum of 25°C (77°F) to a maximum of 28°C (83°F), while May is a bit warmer, with averages hovering around 28°C (82°F) and peaks reaching 29°C (84°F). While both months share high humidity levels of 83%, May sees more precipitation, averaging 78 mm over 22 days compared to January's 61 mm over 15 days. For more details about January weather in Hagatna, you can view Hagatna weather in January.
In comparing the weather between May and February, we see some similarities and slight variations. Both months feature warm temperatures, with May having a minimum of 25°C (78°F) and an average of 28°C (82°F), similarly to February’s minimum of 25°C (78°F) and an average of 27°C (80°F). Interestingly, May reaches a maximum of 29°C (84°F), while February peaks at 28°C (83°F). Precipitation levels are quite comparable, with May experiencing 78 mm (3.1 in) over 22 days and February having 77 mm (3.0 in) across 15 days. Humidity remains high in both months, with May registering 83% and February slightly lower at 82%. For a closer look at February weather, you can visit Hagatna weather in February.
In comparing the weather between March and May, both months exhibit warm temperatures, but May tends to be slightly warmer overall. May has a minimum temperature of 25°C (78°F) and an average of 28°C (82°F), reaching a maximum of 29°C (84°F). In contrast, March features similar minimum temperatures but averages slightly lower at 27°C (81°F) with a maximum reaching 28°C (83°F). Precipitation levels also differ, with May experiencing 78 mm (3.1 in) over 22 days, while March sees less rainfall at 53 mm (2.1 in) over 15 days. Humidity levels remain comparable, with March at 84% and May slightly lower at 83%. For more specific details about the weather in March, you can visit Hagatna weather in March.
In comparing the weather between April and May, we see some notable similarities and differences. Both months feature minimal temperature variation, with April having a slightly lower average temperature of 27°C (81°F) compared to May’s 28°C (82°F). However, May experiences a marginally higher minimum temperature of 25°C (78°F), while both months share the same maximum temperature of 29°C (84°F).
April tends to be wetter, with a total precipitation of 94 mm (3.7 in) over 18 days, contrasted with May's 78 mm (3.1 in) over 22 days. Humidity levels remain high in both months, with April having a slightly higher average humidity of 84% compared to May's 83%. For more details on April weather, you can check Hagatna weather in April.
In comparing the weather between May and June, both months experience similar temperature ranges, with minimum temperatures around 25°C (78°F) and average temperatures peaking at 28°C (82°F). However, June tends to see slightly higher maximum temperatures, reaching 29°C (85°F). Precipitation levels significantly increase in June, with 159 mm (6.3 in) spread over 23 days, compared to May's 78 mm (3.1 in) over 22 days. While the humidity remains relatively high in both months, June's humidity is slightly lower at 80% compared to May's 83%. For more detailed insights, check out Hagatna weather in June.
In May, the weather features warm temperatures with a minimum of 25°C (78°F) and an average of 28°C (82°F), peaking at a maximum of 29°C (84°F). This month experiences 78 mm (3.1 in) of precipitation spread over 22 days, coupled with a high humidity level of 83%. In contrast, July maintains a similar temperature range, with a minimum of 26°C (78°F), an average of 28°C (82°F), and a maximum of 29°C (85°F). However, this month sees significantly higher precipitation at 276 mm (10.9 in) over 30 days and a slightly lower humidity of 80%. For a more detailed look at weather conditions, check out Hagatna weather in July.
In May, the weather is characterized by warm temperatures with a minimum of 25°C (78°F) and an average of 28°C (82°F), reaching a maximum of 29°C (84°F). Although it experiences 78 mm (3.1 in) of precipitation over 22 days, the humidity remains relatively high at 83%. In contrast, August presents similarly warm temperatures, maintaining the same minimum and average as May, but slightly increasing the maximum to 29°C (85°F). However, it sees a significant rise in precipitation, with 405 mm (16.0 in) spread over 30 days, and a slightly lower humidity level at 80%. For more details on August weather, check out Hagatna weather in August.
May and September weather in Hagatna show some similarities, but they also have notable differences. Both months feature a minimum temperature around 25°C (77-78°F) and an average temperature of 28°C (82°F). However, September tends to be a bit warmer with an average maximum temperature reaching 30°C (86°F), compared to May's 29°C (84°F). One significant contrast is the precipitation: September receives much more rain, with a total of 375 mm (14.8 in) over 28 days, while May only sees 78 mm (3.1 in) spread across 22 days. Humidity levels remain relatively high in both months, with May at 83% and September slightly lower at 81%. For a more detailed look at September weather, check out Hagatna weather in September.
May and October in Hagatna present a strikingly similar temperature profile, with both months featuring a minimum of 25°C (78°F), an average of 28°C (82°F), and a maximum of around 29°C (85°F). However, the weather in October is significantly wetter, receiving 356 mm (14.0 in) of precipitation over 29 days compared to May's 78 mm (3.1 in) over 22 days. Additionally, humidity levels are slightly lower in October at 80%, compared to May's 83%. For further insights on the weather conditions, you can check out Hagatna weather in October.
In comparing the weather of May and November, both months exhibit similar average temperatures, with May averaging around 28°C (82°F) and November also maintaining the same average. However, November tends to see slightly higher minimum and maximum temperatures, reaching a minimum of 26°C (79°F) and a maximum of 29°C (85°F), compared to May's 25°C (78°F) and 29°C (84°F). Notably, November experiences significantly more precipitation, totaling 202 mm (8.0 in) over 26 days, in contrast to May’s 78 mm (3.1 in) across 22 days. Despite the higher rainfall, November maintains a lower average humidity of 81% compared to May’s 83%. For more details on November weather specifically, you can visit Hagatna weather in November.
In comparing the weather between May and December, both months exhibit similar temperature ranges, with minimal variation in averages. May boasts daytime temperatures that typically range from a minimum of 25°C (78°F) to a maximum of 29°C (84°F), while December maintains a slightly warmer average with a minimum of 26°C (78°F) and the same maximum of 29°C (84°F). However, December sees an increase in precipitation, measuring 105 mm (4.1 in) compared to May's 78 mm (3.1 in), and both months experience rain on approximately 22 days. Humidity remains relatively high in both months, with May at 83% and December at 84%. For further details about December weather, you can refer to Hagatna weather in December.
As May unfolds in Hagatna, the weather takes on a distinctly warm and humid character, with temperatures consistently hovering in the upper 20s°C. Although the warmth remains inviting, this month witnesses a notable increase in rainfall, with precipitation occurring on the majority of days, making it one of the wetter months compared to the drier spells of the preceding months. The humidity levels soar to a sweltering 83%, enveloping the town in a tropical embrace that is both energizing and heavy. Those looking to understand Hagatna's unique climate dynamics can find more insights here: Hagatna Climate.