Average annual temperature is 14.2 °C
Absolute maximum temperature: 34.9 °C
Absolute minimum temperature: -17.7 °C
Number of sunny days: 173 days
Number of rainy days: 179 days
Number of snow days: 13 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) | 16.2 | 13.0 | 23.3 | 26.1 | 30.1 | 34.9 | 32.4 | 34.7 | 31.1 | 23.1 | 24.2 | 18.4 |
| Average daytime temperature (°C) | 5.3 | 8.4 | 16.5 | 19.0 | 23.5 | 28.0 | 29.0 | 30.8 | 27.2 | 20.4 | 13.0 | 7.8 |
| Average temperature (°C) | 0.4 | 2.7 | 9.3 | 13.1 | 18.2 | 22.5 | 25.6 | 26.6 | 23.1 | 15.4 | 8.6 | 4.0 |
| Average night temperature (°C) | -4.1 | -1.3 | 3.9 | 8.0 | 13.8 | 18.5 | 23.0 | 23.4 | 19.8 | 11.3 | 4.5 | 0.7 |
| Absolute minimum temperature (°C) | -17.7 | -4.8 | -3.8 | 1.3 | 7.2 | 13.5 | 19.3 | 19.1 | 15.3 | 6.9 | -2.8 | -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) | 7.0 | 7.2 | 8.7 | 7.2 | 7.5 | 8.8 | 6.2 | 9.6 | 7.6 | 8.3 | 6.9 | 5.3 |
| Precipitation (mm) | 58 | 20 | 47 | 109 | 177 | 209 | 487 | 227 | 202 | 16 | 107 | 106 |
| Sunny days | 20 | 23 | 24 | 13 | 13 | 16 | 2 | 3 | 11 | 21 | 16 | 11 |
| Rainy days | 8 | 5 | 7 | 17 | 18 | 14 | 29 | 28 | 19 | 10 | 12 | 12 |
| Snow days | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 8 |
The best time to visit Guam during the most sunny months:
The largest precipitation sum in Guam is at