Guam weather live forecast

Today's maximum temperature in Guam is expected to be 27°C. Select a day from the live weather forecast for Guam (Agana) for more weather parameters.

Friday
30th Jan
27

25

5

10
Saturday
31st Jan
28

25

5

9
Sunday
1st Feb
28

25

5

8
Monday
2nd Feb
29

26

6

8
Tuesday
3rd Feb
28

26

6

6

5-day weather forecast updated at 04:00 on Thursday 29th January 2026 GMT

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The 5-day weather forecast for Guam, represented by Agana, (Agana) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Guam weather forecast by day

Below are the detailed weather forecasts for Guam for the next 5 days. The forecasts shown are for Agana and may not represent the whole of Guam. Browse more destinations in Guam to view more weather forecasts.

Guam weather for Friday 30th January 2026

Expect isolated thunderstorms in Guam with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 10 (Very High) and 5 hours of bright sunshine. There are 5-10 mm of rainfall expected with 45% chance of some rain and a gentle breeze of 15 kph from the north-east.

27
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
10
UV index (Very High)
45
% chance of some rain
<10
mm of rainfall expected
L
low heat & humidity
15
kph wind from NE

Guam weather for Saturday 31st January 2026

Expect isolated thunderstorms in Guam with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 9 (Very High) and 5 hours of bright sunshine. There are 2-5 mm of rainfall expected with 54% chance of some rain and a moderate breeze of 23 kph from the north-east.

28
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
9
UV index (Very High)
54
% chance of some rain
<5
mm of rainfall expected
L
low heat & humidity
23
kph wind from NE

Guam weather for Sunday 1st February 2026

Expect isolated thunderstorms in Guam with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 8 (Very High) and 5 hours of bright sunshine. There are 2-5 mm of rainfall expected with 64% chance of some rain and a moderate breeze of 28 kph from the north-east.

28
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
8
UV index (Very High)
64
% chance of some rain
<5
mm of rainfall expected
L
low heat & humidity
28
kph wind from NE

Guam weather for Monday 2nd February 2026

Expect isolated thunderstorms in Guam with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 64% chance of some rain and a fresh breeze of 30 kph from the east.

29
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
8
UV index (Very High)
64
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
30
kph wind from E

Guam weather for Tuesday 3rd February 2026

Expect isolated thunderstorms in Guam with a maximum temperature of 28°C, moderate levels of heat & humidity, maximum UV of 6 (High) and 6 hours of bright sunshine. There are 40-50 mm of rainfall expected with 84% chance of some rain and a moderate breeze of 24 kph from the east.