Average annual temperature is 13.4 °C
Absolute maximum temperature: 35.2 °C
Absolute minimum temperature: -16.1 °C
Number of sunny days: 196 days
Number of rainy days: 162 days
Number of snow days: 7 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) | 12.7 | 12.0 | 24.8 | 25.9 | 31.9 | 35.2 | 34.1 | 34.7 | 30.3 | 22.5 | 24.1 | 18.1 |
| Average daytime temperature (°C) | 2.8 | 7.1 | 16.0 | 19.0 | 24.6 | 28.7 | 29.7 | 30.9 | 26.6 | 19.8 | 11.0 | 5.4 |
| Average temperature (°C) | -1.9 | 1.5 | 8.9 | 13.0 | 18.8 | 23.0 | 25.6 | 26.4 | 22.5 | 14.2 | 6.2 | 1.3 |
| Average night temperature (°C) | -6.7 | -2.7 | 3.1 | 7.7 | 13.5 | 18.5 | 22.4 | 22.7 | 19.0 | 9.4 | 1.7 | -2.4 |
| Absolute minimum temperature (°C) | -16.1 | -6.3 | -4.4 | 1.5 | 5.5 | 14.5 | 19.9 | 16.8 | 13.2 | 4.4 | -7.4 | -13.3 |
| 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 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.0 | 10.8 | 12.0 | 13.1 | 14.1 | 14.6 | 14.4 | 13.5 | 12.4 | 11.3 | 10.2 | 9.7 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.2 | 7.8 | 9.1 | 7.5 | 8.2 | 9.8 | 7.2 | 8.7 | 7.2 | 8.1 | 7.0 | 5.5 |
| Precipitation (mm) | 32 | 2 | 28 | 67 | 130 | 123 | 421 | 325 | 304 | 14 | 55 | 81 |
| Sunny days | 20 | 24 | 24 | 14 | 21 | 10 | 6 | 7 | 10 | 22 | 18 | 20 |
| Rainy days | 8 | 4 | 7 | 16 | 10 | 20 | 25 | 24 | 20 | 9 | 12 | 7 |
| Snow days | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 |
The best time to visit Guam during the most sunny months:
The largest precipitation sum in Guam is at