Guam weather live forecast

Today's maximum temperature in Guam is expected to be 28°C. Select a day from the live weather forecast for Guam (Agana) for more weather parameters.

Sunday
22nd Mar
28

25

5

10
Monday
23rd Mar
28

25

4

11
Tuesday
24th Mar
28

25

4

9
Wednesday
25th Mar
28

25

4

11
Thursday
26th Mar
29

25

4

11

5-day weather forecast updated at 04:00 on Saturday 21st March 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 Sunday 22nd March 2026

Expect broken clouds in Guam with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 10 (Very High) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 26 kph from the north-east.

28
°C maximum temperature
25
°C minimum temperature
broken clouds
5
hours of sunshine
10
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
26
kph wind from NE

Guam weather for Monday 23rd March 2026

Expect isolated thunderstorms in Guam with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 11 (Extreme) and 4 hours of bright sunshine. There are 5-10 mm of rainfall expected with 71% chance of some rain and a moderate breeze of 25 kph from the east.

28
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
11
UV index (Extreme)
71
% chance of some rain
<10
mm of rainfall expected
L
low heat & humidity
25
kph wind from E

Guam weather for Tuesday 24th March 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 4 hours of bright sunshine. There are 10-20 mm of rainfall expected with 70% chance of some rain and a moderate breeze of 22 kph from the east.

28
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
9
UV index (Very High)
70
% chance of some rain
<20
mm of rainfall expected
L
low heat & humidity
22
kph wind from E

Guam weather for Wednesday 25th March 2026

Expect isolated thunderstorms in Guam with a maximum temperature of 28°C, moderate levels of heat & humidity, maximum UV of 11+ (Extreme) and 4 hours of bright sunshine. There are 10-20 mm of rainfall expected with 69% chance of some rain and a gentle breeze of 16 kph from the north-east.

28
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
11
UV index (Extreme)
69
% chance of some rain
<20
mm of rainfall expected
M
moderate heat & humidity
16
kph wind from NE

Guam weather for Thursday 26th March 2026

Expect isolated thunderstorms in Guam with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 11+ (Extreme) and 4 hours of bright sunshine. There are 10-20 mm of rainfall expected with 64% chance of some rain and a gentle breeze of 14 kph from the east.