Guam (Dededo Village)
December
Weather in Guam for December 2025
Your guide to Guam weather in December - trends and predictions
In general, the average temperature in Guam at the beginning of December is 28.1 °C. As the month progressed, temperatures tended to slightly decrease, reaching an average of 28 °C by the end of December.
Guam experiences heavy rainfall in December, with over 20 rainy days and an average total precipitation 160.2 mm.
Temperatures
Rain 🌧️
5
Dry days
26
Rainy days
0
Snow days
28°/26°
Temperatures
31 km/h
Avg max wind
79 %
Avg humidity
Guam in December average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  28° | 2 28° | 3 28° | 4 29° | 5 28° | 6 28° | 7  28° |
| 8 28° | 9 28° | 10 28° | 11 28° | 12 28° | 13 28° | 14 28° |
| 15 28° | 16 28° | 17 28° | 18 28° | 19 28° | 20 28° | 21 28° |
| 22  29° | 23 28° | 24 28° | 25 28° | 26  28° | 27 28° | 28 28° |
| 29  28° | 30 28° | 31 28° |
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Temperatures trend during December in Guam
See the weather trend as well as the moving average line
December weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Dec. | Light rain shower | 28° /26° | 3.7 mm | 6 | |
| 2 Dec. | Light rain shower | 28° /26° | 5.6 mm | 6 | |
| 3 Dec. | Light rain shower | 28° /26° | 5.1 mm | 6 | |
| 4 Dec. | Patchy rain possible | 29° /26° | 4.6 mm | 6 | |
| 5 Dec. | Light rain shower | 28° /27° | 0.9 mm | 6 | |
| 6 Dec. | Light rain shower | 28° /27° | 3.8 mm | 6 | |
| 7 Dec. | Partly cloudy | 28° /26° | 1.5 mm | 7 | |
| 8 Dec. | Patchy rain possible | 28° /27° | 0.8 mm | 6 | |
| 9 Dec. | Light rain shower | 28° /26° | 5.8 mm | 6 | |
| 10 Dec. | Patchy rain possible | 28° /26° | 0.7 mm | 7 | |
| 11 Dec. | Patchy rain possible | 28° /26° | 0.6 mm | 6 | |
| 12 Dec. | Light rain shower | 28° /26° | 1.7 mm | 6 | |
| 13 Dec. | Patchy rain possible | 28° /27° | 1.3 mm | 6 | |
| 14 Dec. | Light rain shower | 28° /27° | 1.9 mm | 6 | |
| 15 Dec. | Patchy rain possible | 28° /27° | 1.1 mm | 6 | |
| 16 Dec. | Light rain shower | 28° /27° | 3.9 mm | 6 | |
| 17 Dec. | Light rain shower | 28° /27° | 5.5 mm | 6 | |
| 18 Dec. | Light rain shower | 28° /26° | 11.3 mm | 6 | |
| 19 Dec. | Patchy rain possible | 28° /26° | 10.4 mm | 6 | |
| 20 Dec. | Light rain shower | 28° /26° | 5.9 mm | 6 | |
| 21 Dec. | Light rain shower | 28° /26° | 4.5 mm | 6 | |
| 22 Dec. | Moderate or heavy rain shower | 29° /26° | 13.1 mm | 6 | |
| 23 Dec. | Moderate or heavy rain shower | 28° /26° | 11.3 mm | 6 | |
| 24 Dec. | Patchy rain possible | 28° /26° | 2.2 mm | 6 | |
| 25 Dec. | Patchy rain possible | 28° /26° | 6.1 mm | 6 | |
| 26 Dec. | Heavy rain at times | 28° /26° | 7.9 mm | 6 | |
| 27 Dec. | Light rain shower | 28° /26° | 3 mm | 6 | |
| 28 Dec. | Heavy rain at times | 28° /26° | 4.6 mm | 6 | |
| 29 Dec. | Overcast | 28° /26° | 3.9 mm | 6 | |
| 30 Dec. | Moderate or heavy rain shower | 28° /26° | 6.5 mm | 6 | |
| 31 Dec. | Moderate or heavy rain shower | 28° /26° | 14.8 mm | 6 | |
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Important Notice
Our weather forecast for Guam in December 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 forecast closer to your planned date for the most up-to-date weather information.
Guam in December - FAQ
What are the expected maximum and minimum temperatures in Guam during December?
During December, expect a variety of temperatures with highs around 28° and lows near 26°, suitable for diverse activities and preferences.
How much rainfall should be expected in Guam during December?
Significant rainfall exceeding 160.2 mm is expected in Guam during December, occurring over more than 26 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Guam during December?
The average wind speed in Guam during December is 31 km/h, suggesting breezy to windy conditions, depending on your activities.
December rainfall patterns in Guam
Explore the daily rainfall trends and prepare for Guams December weather 💧
UV exposure in Guam during December
Stay informed about UV levels for safe outdoor activities throughout the month of December ☀️
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