Guam
May
Weather in Guam for May 2025
Your guide to Guam weather in May - trends and predictions
In general, the average temperature in Guam at the beginning of May is 28.9 °C. As the month progressed, temperatures tended to slightly decrease, reaching an average of 28.6 °C by the end of May.
Guam experiences an exceptionally high level of rainfall in May, with more than 24 rainy days on average.
Is May a good time to visit Guam? check out the best time to travel to Guam page.
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4
Dry days
27
Rainy days
0
Snow days
29°/26°
Temperatures
29 km/h
Avg max wind
80 %
Avg humidity
Guam in May average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  29° | 2 29° | 3  29° | 4 28° | |||
| 5 29° | 6 29° | 7 29° | 8 29° | 9  29° | 10 29° | 11 29° |
| 12 30° | 13 29° | 14 30° | 15 30° | 16  30° | 17 30° | 18 30° |
| 19 29° | 20 30° | 21 29° | 22  29° | 23 28° | 24 28° | 25 28° |
| 26 29° | 27 29° | 28 29° | 29 29° | 30 28° | 31 28° |
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Temperatures trend during May in Guam
See the weather trend as well as the moving average line
May weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 May | Patchy rain possible | 29° /26° | 0.9 mm | 6 | |
| 2 May | Patchy rain possible | 29° /26° | 3.5 mm | 6 | |
| 3 May | Cloudy | 29° /26° | 1.1 mm | 6 | |
| 4 May | Cloudy | 28° /25° | 0.5 mm | 6 | |
| 5 May | Patchy rain possible | 29° /25° | 1.6 mm | 6 | |
| 6 May | Patchy rain possible | 29° /26° | 1.3 mm | 6 | |
| 7 May | Patchy rain possible | 29° /26° | 1.7 mm | 6 | |
| 8 May | Patchy rain possible | 29° /26° | 2.5 mm | 6 | |
| 9 May | Overcast | 29° /26° | 2.4 mm | 6 | |
| 10 May | Patchy rain possible | 29° /26° | 2.2 mm | 6 | |
| 11 May | Patchy rain possible | 29° /26° | 2.7 mm | 6 | |
| 12 May | Patchy rain possible | 30° /26° | 1.9 mm | 7 | |
| 13 May | Patchy rain possible | 29° /26° | 2.4 mm | 6 | |
| 14 May | Patchy rain possible | 30° /26° | 3.3 mm | 7 | |
| 15 May | Patchy rain possible | 30° /27° | 1.2 mm | 7 | |
| 16 May | Moderate or heavy rain shower | 30° /27° | 3.5 mm | 7 | |
| 17 May | Cloudy | 30° /27° | 0.6 mm | 7 | |
| 18 May | Patchy rain possible | 30° /26° | 1.4 mm | 7 | |
| 19 May | Patchy rain possible | 29° /26° | 1.5 mm | 6 | |
| 20 May | Cloudy | 30° /27° | 0.4 mm | 7 | |
| 21 May | Patchy rain possible | 29° /27° | 7.9 mm | 6 | |
| 22 May | Heavy rain at times | 29° /27° | 2.7 mm | 6 | |
| 23 May | Moderate or heavy rain shower | 28° /26° | 33.3 mm | 6 | |
| 24 May | Moderate or heavy rain shower | 28° /26° | 187.4 mm | 6 | |
| 25 May | Moderate or heavy rain shower | 28° /26° | 89.7 mm | 7 | |
| 26 May | Patchy rain possible | 29° /26° | 0.5 mm | 7 | |
| 27 May | Heavy rain at times | 29° /25° | 5.3 mm | 6 | |
| 28 May | Moderate rain at times | 29° /26° | 1.7 mm | 6 | |
| 29 May | Moderate or heavy rain shower | 29° /26° | 6 mm | 6 | |
| 30 May | Moderate or heavy rain shower | 28° /26° | 18.2 mm | 6 | |
| 31 May | Moderate or heavy rain shower | 28° /25° | 19.5 mm | 6 | |
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Important Notice
Our weather forecast for Guam in May 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 May - FAQ
What are the expected maximum and minimum temperatures in Guam during May?
During May, expect a variety of temperatures with highs around 29° and lows near 26°, suitable for diverse activities and preferences.
How much rainfall should be expected in Guam during May?
Significant rainfall exceeding 804.3 mm is expected in Guam during May, occurring over more than 27 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Guam during May?
The average wind speed in Guam during May is 29 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Guam in May?
As you prepare for your trip to Guam in May, 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 May, 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
- Sandals/Flip-flops: Comfortable for warm climates
- 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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