Average annual temperature is 14.1 °C
Absolute maximum temperature: 35.6 °C
Absolute minimum temperature: -13.1 °C
Number of sunny days: 174 days
Number of rainy days: 180 days
Number of snow days: 11 days
Look at detailed online map of Guam
* Weather data for Guam South Korea is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 16.3 | 12.7 | 23.5 | 26.6 | 30.4 | 35.6 | 32.4 | 34.6 | 31.0 | 22.9 | 24.4 | 18.3 |
| Average daytime temperature (°C) | 5.3 | 8.5 | 16.7 | 19.1 | 23.6 | 28.5 | 29.1 | 30.8 | 27.2 | 20.3 | 12.9 | 7.8 |
| Average temperature (°C) | 0.1 | 2.6 | 9.5 | 13.1 | 18.3 | 22.7 | 25.6 | 26.5 | 22.9 | 15.1 | 8.2 | 3.7 |
| Average night temperature (°C) | -4.5 | -1.7 | 3.7 | 7.9 | 13.7 | 18.3 | 23.0 | 23.1 | 19.5 | 10.7 | 4.0 | 0.3 |
| Absolute minimum temperature (°C) | -13.1 | -5.1 | -4.1 | 1.2 | 7.1 | 13.4 | 19.2 | 18.4 | 14.7 | 5.9 | -3.3 | -10.7 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.5 | 14.3 | 13.5 | 12.4 | 11.3 | 10.3 | 9.8 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.2 | 7.3 | 8.8 | 7.2 | 7.6 | 8.9 | 6.3 | 9.6 | 7.7 | 8.3 | 7.1 | 5.6 |
| Precipitation (mm) | 56 | 21 | 46 | 102 | 162 | 193 | 456 | 291 | 216 | 14 | 91 | 100 |
| Sunny days | 21 | 23 | 24 | 12 | 14 | 14 | 2 | 3 | 8 | 21 | 20 | 12 |
| Rainy days | 6 | 5 | 7 | 18 | 17 | 16 | 29 | 28 | 22 | 10 | 9 | 13 |
| Snow days | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 6 |
The best time to visit Guam during the most sunny months:
The largest precipitation sum in Guam is at