Guam
When to go?
Mean 27 °C, 19 rain days in the month (90 mm).
Against
- Hothighs of 28 °C
Mean 26 °C, 16 rain days in the month (68 mm).
Against
- Hothighs of 27 °C
Mean 27 °C, 15 rain days in the month (62 mm).
Against
- Hothighs of 28 °C
Mean 27 °C, 17 rain days in the month (88 mm).
Against
- Hothighs of 28 °C
Mean 28 °C, 20 rain days in the month (100 mm).
Against
- Hothighs of 29 °C
- Often rainyrain on 6 days in 10
Mean 28 °C, 24 rain days in the month (167 mm).
Against
- Hothighs of 29 °C
- Often rainyrain on 8 days in 10
Mean 27 °C, 29 rain days in the month (285 mm).
Against
- Hothighs of 29 °C
- Often rainyrain on 9 days in 10
Mean 27 °C, 29 rain days in the month (361 mm).
Against
- Hothighs of 29 °C
- Often rainyrain on 9 days in 10
- Torrential rain12 mm per rain day
Mean 27 °C, 28 rain days in the month (334 mm).
Against
- Hothighs of 29 °C
- Often rainyrain on 9 days in 10
- Torrential rain12 mm per rain day
Mean 27 °C, 29 rain days in the month (306 mm).
Against
- Hothighs of 28 °C
- Often rainyrain on 9 days in 10
- Torrential rain11 mm per rain day
Mean 27 °C, 24 rain days in the month (185 mm).
Against
- Hothighs of 29 °C
- Often rainyrain on 8 days in 10
Mean 27 °C, 21 rain days in the month (112 mm).
Against
- Hothighs of 28 °C
- Often rainyrain on 7 days in 10
No ideal month: the best months are February–March, the least hot. Avoid August–December (hot and often rainy, at times torrential rain), April–July (hot, at times often rainy), January (hot).
Climate zones
- Freezing, dry
- Freezing
- Freezing, wet
- Cold, dry
- Cold
- Cold, wet
- Mild, dry
- Mild
- Mild, wet
- Hot, arid
- Hot
- Hot, wet
- Torrid, arid
- Torrid
- Torrid, wet
Mean maximum and minimum temperature and mean monthly precipitation of the season (the mean of its three months), ERA5-Land 1996–2025, at about 9 km resolution: colours are in levels (the same as the city scale) and smaller details are not real.
What is the climate like?
Area mean indicative, over the whole territory
Temperature and rain
Monthly min and max temperature (°C)
Monthly min and max temperature (°C)
How much it rains
Rain days and how much water
Rain days and how much water
Bars: length = rain days, thickness = mm on a rain day, area = the month's rain. 3 mm a day7 mm a day15 mm a day
Colour = the month's rain: 103060100160250400mm
Daylight hours
Mean daylight hours over the whole territory.
Spatial mean over the whole area, weighted by area (cosine of the latitude), not by population: indicative only, since the climate varies a lot within an area (coasts, plains, mountains). Look at the cities for the weather you will find.