Guam
January
Weather in Guam for January 2025
Your guide to Guam weather in January - trends and predictions
In general, the average temperature in Guam at the beginning of January is 28 °C. As the month progressed, temperatures tended to slightly decrease, reaching an average of 27.7 °C by the end of January.
Guam experiences an exceptionally high level of rainfall in January, with more than 20 rainy days on average.
Is January a good time to visit Guam? check out the best time to travel to Guam page.
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7
Dry days
24
Rainy days
0
Snow days
28°/25°
Temperatures
31 km/h
Avg max wind
76 %
Avg humidity
Guam in January average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  28° | 2  28° | 3  28° | 4 28° | 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 27° | 19 27° |
| 20 28° | 21  28° | 22 28° | 23 27° | 24 27° | 25 28° | 26 28° |
| 27  28° | 28 28° | 29 27° | 30 28° | 31 27° |
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Temperatures trend during January in Guam
See the weather trend as well as the moving average line
January weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Jan. | Patchy rain possible | 28° /26° | 7.3 mm | 6 | |
| 2 Jan. | Heavy rain at times | 28° /26° | 5.8 mm | 6 | |
| 3 Jan. | Moderate rain at times | 28° /26° | 3.9 mm | 6 | |
| 4 Jan. | Patchy rain possible | 28° /26° | 3 mm | 6 | |
| 5 Jan. | Moderate rain at times | 28° /26° | 2.8 mm | 6 | |
| 6 Jan. | Cloudy | 28° /26° | 1.1 mm | 6 | |
| 7 Jan. | Moderate or heavy rain shower | 28° /26° | 5 mm | 6 | |
| 8 Jan. | Moderate or heavy rain shower | 28° /25° | 8.3 mm | 6 | |
| 9 Jan. | Moderate or heavy rain shower | 28° /25° | 13.9 mm | 6 | |
| 10 Jan. | Heavy rain at times | 28° /26° | 4.4 mm | 6 | |
| 11 Jan. | Moderate or heavy rain shower | 28° /26° | 8.9 mm | 6 | |
| 12 Jan. | Heavy rain at times | 28° /26° | 6.5 mm | 6 | |
| 13 Jan. | Moderate rain at times | 28° /25° | 5.1 mm | 6 | |
| 14 Jan. | Moderate or heavy rain shower | 28° /26° | 9.1 mm | 6 | |
| 15 Jan. | Heavy rain at times | 28° /26° | 5.4 mm | 6 | |
| 16 Jan. | Moderate or heavy rain shower | 28° /25° | 2.9 mm | 7 | |
| 17 Jan. | Moderate rain at times | 28° /26° | 6 mm | 6 | |
| 18 Jan. | Cloudy | 27° /25° | 1.1 mm | 6 | |
| 19 Jan. | Patchy rain possible | 27° /25° | 1.7 mm | 6 | |
| 20 Jan. | Patchy rain possible | 28° /25° | 3.1 mm | 6 | |
| 21 Jan. | Partly cloudy | 28° /25° | 0.8 mm | 7 | |
| 22 Jan. | Cloudy | 28° /25° | 1.1 mm | 6 | |
| 23 Jan. | Patchy rain possible | 27° /25° | 2.7 mm | 6 | |
| 24 Jan. | Patchy rain possible | 27° /25° | 0.9 mm | 6 | |
| 25 Jan. | Patchy rain possible | 28° /25° | 1.3 mm | 6 | |
| 26 Jan. | Patchy rain possible | 28° /25° | 0.8 mm | 6 | |
| 27 Jan. | Overcast | 28° /25° | 3.7 mm | 6 | |
| 28 Jan. | Overcast | 28° /25° | 1.1 mm | 7 | |
| 29 Jan. | Patchy rain possible | 27° /25° | 0.7 mm | 6 | |
| 30 Jan. | Cloudy | 28° /25° | 0.9 mm | 6 | |
| 31 Jan. | Overcast | 27° /25° | 1.1 mm | 6 | |
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Important Notice
Our weather forecast for Guam in January 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 January - FAQ
What are the expected maximum and minimum temperatures in Guam during January?
During January, expect a variety of temperatures with highs around 28° and lows near 25°, suitable for diverse activities and preferences.
How much rainfall should be expected in Guam during January?
Significant rainfall exceeding 240.5 mm is expected in Guam during January, occurring over more than 24 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Guam during January?
The average wind speed in Guam during January is 31 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Guam in January?
As you prepare for your trip to Guam in January, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Guam, during January, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Lightweight Clothing: T-shirts, blouses, shorts, skirts
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Umbrellas/Raincoats: For rainy days
- Personal Items
- Sunscreen: High SPF for sunny destinations
- Lip Balm with SPF: To protect against chapped lips
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