worldweatherGuam weather in December - temperature, rain and is it a good time to visit?
Daytime
30°
Night
25°
🌊 Sea
29°
☀️ Day length
11 h 21 min
Chance of rain
76%
Thunder days
1%
Humid days
100%
In December, Guam averages about 30° during the day and 25° at night. Rain is fairly likely - around a 76% chance on a given day, so pack for showers. The sea is around 29°C - very warm for swimming.
Guam weather all year - average temperatures and rain
| Month | Day | Night | Chance of rain |
|---|---|---|---|
| January ★ | 29℃ | 24℃ | 68% |
| February ★ | 29℃ | 24℃ | 69% |
| March ★ | 30℃ | 25℃ | 67% |
| April ★ | 30℃ | 25℃ | 73% |
| May | 31℃ | 26℃ | 62% |
| June | 31℃ | 26℃ | 77% |
| July | 30℃ | 26℃ | 81% |
| August | 30℃ | 25℃ | 86% |
| September | 30℃ | 25℃ | 86% |
| October | 30℃ | 25℃ | 84% |
| November | 31℃ | 26℃ | 76% |
| December | 30℃ | 25℃ | 76% |
★ - months most often recommended for travel
Where is it warmest in Guam in December? Weather by city
| Place | Day | Night | 🌊 Sea | Chance of rain |
|---|---|---|---|---|
| Dededovillage | 31℃ | 26℃ | 29℃ | 71% |
| Tamuningtumonharmonvillage | 31℃ | 26℃ | 29℃ | 71% |
| Yigovillage | 29℃ | 24℃ | 29℃ | 86% |
Travelling soon? Check the live 14-day weather forecast for Guam.