Guam Island
August
Weather in Guam Island for August 2026
Your guide to Guam Island weather in August - trends and predictions
In general, the average temperature in Guam Island at the beginning of August is 28.3 °C. As the month progressed, temperatures tended to slightly increase, reaching an average of 28.6 °C by the end of August.
Guam Island experiences heavy rainfall in August, with over 20 rainy days and an average total precipitation 217.9 mm.
Temperatures
Rain 🌧️
0
Dry days
31
Rainy days
0
Snow days
29°/27°
Temperatures
19 km/h
Avg max wind
77 %
Avg humidity
Guam Island Weather August
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Temperatures trend during August in Guam Island
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August weather in Guam Island day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Aug. |  Light rain shower | 28° /26° | 3.6 mm | 6 | |
| 2 Aug. |  Moderate or heavy rain shower | 29° /26° | 7.3 mm | 6 | |
| 3 Aug. | Light rain shower | 28° /27° | 6.9 mm | 6 | |
| 4 Aug. | Light rain shower | 28° /27° | 5.9 mm | 6 | |
| 5 Aug. | Moderate or heavy rain shower | 27° /25° | 10.6 mm | 6 | |
| 6 Aug. | Light rain shower | 29° /27° | 9.4 mm | 6 | |
| 7 Aug. | Patchy rain possible | 29° /27° | 4.9 mm | 6 | |
| 8 Aug. |  Partly cloudy | 29° /26° | 2.1 mm | 7 | |
| 9 Aug. | Patchy rain possible | 29° /27° | 0.6 mm | 6 | |
| 10 Aug. | Light rain shower | 29° /27° | 7.7 mm | 6 | |
| 11 Aug. | Patchy rain possible | 29° /27° | 2.6 mm | 6 | |
| 12 Aug. | Light rain shower | 29° /27° | 3.3 mm | 6 | |
| 13 Aug. | Light rain shower | 29° /27° | 0.5 mm | 6 | |
| 14 Aug. | Patchy rain possible | 29° /26° | 5.2 mm | 6 | |
| 15 Aug. | Moderate or heavy rain shower | 29° /27° | 8.3 mm | 6 | |
| 16 Aug. |  Patchy light drizzle | 29° /27° | 1.8 mm | 6 | |
| 17 Aug. | Light rain shower | 29° /27° | 3.4 mm | 6 | |
| 18 Aug. | Light rain shower | 29° /27° | 9.4 mm | 6 | |
| 19 Aug. | Light rain shower | 29° /25° | 21.5 mm | 6 | |
| 20 Aug. | Patchy rain possible | 29° /27° | 3.4 mm | 6 | |
| 21 Aug. | Light rain shower | 29° /27° | 9.2 mm | 6 | |
| 22 Aug. | Light rain shower | 28° /26° | 8.3 mm | 6 | |
| 23 Aug. | Light rain shower | 29° /27° | 4 mm | 6 | |
| 24 Aug. | Patchy rain possible | 29° /27° | 4.3 mm | 6 | |
| 25 Aug. | Patchy rain possible | 29° /27° | 4.4 mm | 6 | |
| 26 Aug. | Light rain shower | 29° /27° | 12.4 mm | 6 | |
| 27 Aug. | Light rain shower | 29° /27° | 4.3 mm | 6 | |
| 28 Aug. |  Patchy light rain with thunder | 29° /28° | 6.3 mm | 6 | |
| 29 Aug. | Light rain shower | 29° /28° | 6.1 mm | 6 | |
| 30 Aug. | Moderate or heavy rain shower | 28° /26° | 25.2 mm | 6 | |
| 31 Aug. | Light rain shower | 27° /25° | 15 mm | 6 | |
| Next | |||||
Important Notice
Our weather forecast for Guam Island in August is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Guam Island forecast closer to your planned date for the most up-to-date weather information.
Change Month
Guam Island in August - FAQ
What are the expected maximum and minimum temperatures in Guam Island during August?
During August, expect a variety of temperatures with highs around 29° and lows near 27°, suitable for diverse activities and preferences.
How much rainfall should be expected in Guam Island during August?
Significant rainfall exceeding 217.9 mm is expected in Guam Island during August, occurring over more than 31 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Guam Island during August?
The average wind speed in Guam Island during August is 19 km/h, suggesting breezy to windy conditions, depending on your activities.
August rainfall patterns in Guam Island
Explore the daily rainfall trends and prepare for Guam Islands August weather 💧
UV exposure in Guam Island during August
Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
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