Weather in Guam - today, tomorrow and 14-day forecast

Right now temperatures across Guam range from 29° to 29°. Below: today's conditions city by city, a live weather map, the 14-day outlook and month-by-month climate to help you pick the best time to travel.

Weather in Guam's cities today

🌧️Dededovillage 29°💧 7.8 mm 🌧️Yigovillage 29°💧 7.1 mm 🌧️Tamuningtumonharmonvillage 29°💧 8.4 mm 🌧️Mangilaovillage 29°💧 8 mm

Weather map - today's temperatures

Pill colour shows today's daytime temperature. Click a city for its full 14-day forecast.

Next days in Guam

today🌧️ 29°💧 8.2 mm

Thu🌧️ 27°💧 0.2 mm

Fri🌤️ 29°💧 2.1 mm

Sat🌧️ 28°💧 0.3 mm

Sun🌧️ 29°💧 3.6 mm

Mon🌧️ 29°💧 3.9 mm

Tue🌧️ 29°💧 20.8 mm

Wed🌧️ 28°💧 36 mm

14-day forecast - Guam

📅 Guam 30 & 45-day weather - long-range outlook

Next 16 days · forecast

28°

around 27° at night · days with rain: 13

Weeks 3-4 · avg for July

30°

around 26° at night · rain chance 81%

Weeks 5-7 · avg for August

30°

around 25° at night · rain chance 86%

The 30 & 45-day outlook for Guam: the next 16 days are a numerical forecast updated daily - on average 28° by day and 27° at night. Further out we rely on multi-year climate averages: around 30° in July, and about 30° in August. Forecasts beyond two weeks are indicative only.

Today vs the next days - Guam cities

City	Today	+3 days	+7 days	Rain today
🌧️ Dededovillage	29℃	28℃	28℃	7.8 mm
🌧️ Yigovillage	29℃	27℃	28℃	7.1 mm
🌧️ Tamuningtumonharmonvillage	29℃	28℃	29℃	8.4 mm
🌧️ Mangilaovillage	29℃	28℃	28℃	8 mm

Day-by-day forecast for Guam

Wednesday8 July 2026

🌧️29°light rain

sunrise 05:59 · sunset 18:52 · night 25° · evening 25° · rain 8.22 mm · humidity 83% · wind 9 m/s · clouds 100%

Thursday9 July 2026

🌧️27°light rain

sunrise 05:59 · sunset 18:52 · night 26° · evening 27° · rain 0.19 mm · humidity 79% · wind 4 m/s · clouds 100%

Friday10 July 2026

🌤️29°a few clouds

sunrise 06:00 · sunset 18:52 · night 27° · evening 28° · rain 2.11 mm · humidity 76% · wind 5 m/s · clouds 24%

Saturday11 July 2026

🌧️28°light rain

sunrise 06:00 · sunset 18:52 · night 27° · evening 27° · rain 0.25 mm · humidity 79% · wind 6 m/s · clouds 76%

Sunday12 July 2026

🌧️29°light rain

sunrise 06:00 · sunset 18:52 · night 27° · evening 27° · rain 3.57 mm · humidity 75% · wind 5 m/s · clouds 96%

Monday13 July 2026

🌧️29°light rain

sunrise 06:01 · sunset 18:52 · night 27° · evening 27° · rain 3.85 mm · humidity 72% · wind 5 m/s · clouds 94%

Tuesday14 July 2026

🌧️29°moderate rain

sunrise 06:01 · sunset 18:52 · night 27° · evening 27° · rain 20.82 mm · humidity 77% · wind 5 m/s · clouds 35%

Wednesday15 July 2026

🌧️28°moderate rain

sunrise 06:01 · sunset 18:52 · night 27° · evening 27° · rain 36 mm · humidity 83% · wind 9 m/s · clouds 100%

Thursday16 July 2026

🌧️26°moderate rain

sunrise 06:01 · sunset 18:52 · night 27° · evening 27° · rain 25.74 mm · humidity 86% · wind 6 m/s · clouds 100%

Friday17 July 2026

🌧️29°light rain

sunrise 06:02 · sunset 18:52 · night 27° · evening 27° · rain 8.64 mm · humidity 80% · wind 5 m/s · clouds 80%

Saturday18 July 2026

🌧️29°light rain

sunrise 06:02 · sunset 18:52 · night 27° · evening 28° · rain 0.51 mm · humidity 74% · wind 4 m/s · clouds 100%

Sunday19 July 2026

🌧️29°light rain

sunrise 06:02 · sunset 18:52 · night 28° · evening 27° · rain 4.14 mm · humidity 79% · wind 10 m/s · clouds 47%

Monday20 July 2026

🌧️28°light rain

sunrise 06:03 · sunset 18:52 · night 28° · evening 27° · rain 6.42 mm · humidity 84% · wind 11 m/s · clouds 61%

Tuesday21 July 2026

🌧️29°light rain

sunrise 06:03 · sunset 18:51 · night 28° · evening 28° · rain 3.39 mm · humidity 80% · wind 10 m/s · clouds 92%

Wednesday22 July 2026

🌧️29°light rain

sunrise 06:03 · sunset 18:51 · night 27° · evening 28° · rain 11.64 mm · humidity 81% · wind 6 m/s · clouds 100%

Thursday23 July 2026

🌧️29°light rain

sunrise 06:03 · sunset 18:51 · night 27° · evening 27° · rain 8.07 mm · humidity 75% · wind 5 m/s · clouds 35%

🌊 Sea temperature - Guam

Water today

29°C

Week avg

29°C

Waves today

2.1 m

How's the water?

very warm

16-day sea temperature forecast:

8.07 29°C9.07 29°C10.07 29°C11.07 29°C12.07 29°C13.07 29°C14.07 29°C15.07 29°C16.07 30°C

Average sea temperature through the year:

Jan 29°CFeb 28°CMar 28°CApr 29°CMay 29°CJun 30°CJul 30°CAug 30°CSep 30°COct 30°CNov 30°CDec 29°C

Beach	Water today	Water week avg	Waves	How's the water?
Dededovillage	29℃	29℃	2 m	very warm
Tamuningtumonharmonvillage	29℃	29℃	2.1 m	very warm
Yigovillage	29℃	29℃	2 m	very warm
Mangilaovillage	29℃	29℃	2.1 m	very warm

Sea-surface temperature from marine models, updated daily. See also: where the sea is warmest right now.

Guam weather through the year

Guam weather month by month - when is the best time to go?

January (29°)February (29°)March (30°)April (30°)May (31°)June (31°)July (30°)August (30°)September (30°)October (30°)November (31°)December (30°)

FAQ - Guam weather

What is the weather like in Guam today?

Today it is about 29° during the day and 25° at night, light rain.

How far ahead can I check the forecast for Guam?

This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.