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.

Tuesday
24th Mar
28

25

3

11
Wednesday
25th Mar
28

25

4

9
Thursday
26th Mar
29

25

5

11
Friday
27th Mar
29

25

5

11
Saturday
28th Mar
29

25

6

11

5-day weather forecast updated at 04:00 on Monday 23rd 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 Tuesday 24th 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 3 hours of bright sunshine. There are 10-20 mm of rainfall expected with 79% chance of some rain and a gentle breeze of 19 kph from the north-east.

28
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
11
UV index (Extreme)
79
% chance of some rain
<20
mm of rainfall expected
L
low heat & humidity
19
kph wind from NE

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 9 (Very High) and 4 hours of bright sunshine. There are 5-10 mm of rainfall expected with 87% chance of some rain and a moderate breeze of 21 kph from the north-east.

28
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
9
UV index (Very High)
87
% chance of some rain
<10
mm of rainfall expected
M
moderate heat & humidity
21
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 5 hours of bright sunshine. There are 10-20 mm of rainfall expected with 63% chance of some rain and a gentle breeze of 19 kph from the north-east.

29
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
11
UV index (Extreme)
63
% chance of some rain
<20
mm of rainfall expected
M
moderate heat & humidity
19
kph wind from NE

Guam weather for Friday 27th 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 5 hours of bright sunshine. There are 2-5 mm of rainfall expected with 59% chance of some rain and a gentle breeze of 15 kph from the north-east.

29
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
11
UV index (Extreme)
59
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
15
kph wind from NE

Guam weather for Saturday 28th 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 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 46% chance of some rain and a gentle breeze of 13 kph from the north-east.