Guam weather live forecast

Today's maximum temperature in Guam is expected to be 29°C. Select a day from the live weather forecast for Guam (Agana) for more weather parameters.

Saturday
31st Jan
29

25

5

9
Sunday
1st Feb
28

25

5

7
Monday
2nd Feb
28

25

2

6
Tuesday
3rd Feb
29

26

5

7
Wednesday
4th Feb
29

25

5

10

5-day weather forecast updated at 04:00 on Saturday 31st 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 Saturday 31st January 2026

Expect isolated thunderstorms in Guam with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 5 hours of bright sunshine. There are 5-10 mm of rainfall expected with 51% chance of some rain and a moderate breeze of 22 kph from the north-east.

29
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
9
UV index (Very High)
51
% chance of some rain
<10
mm of rainfall expected
M
moderate heat & humidity
22
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 7 (High) and 5 hours of bright sunshine. There are 5-10 mm of rainfall expected with 68% 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
7
UV index (High)
68
% chance of some rain
<10
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 28°C, low levels of heat & humidity, maximum UV of 6 (High) and 2 hours of bright sunshine. There are 20-30 mm of rainfall expected with 88% chance of some rain and a moderate breeze of 27 kph from the east.

28
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
2
hours of sunshine
6
UV index (High)
88
% chance of some rain
<30
mm of rainfall expected
L
low heat & humidity
27
kph wind from E

Guam weather for Tuesday 3rd February 2026

Expect isolated thunderstorms in Guam with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 5 hours of bright sunshine. There are 30-40 mm of rainfall expected with 89% chance of some rain and a moderate breeze of 24 kph from the east.

29
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
7
UV index (High)
89
% chance of some rain
<40
mm of rainfall expected
M
moderate heat & humidity
24
kph wind from E

Guam weather for Wednesday 4th February 2026

Expect isolated thunderstorms in Guam with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 10 (Very High) and 5 hours of bright sunshine. There are 50 mm or more of rainfall expected with 91% chance of some rain and a gentle breeze of 17 kph from the east.