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.

Wednesday
11th Mar
29

25

6

11
Thursday
12th Mar
28

25

4

7
Friday
13th Mar
28

25

1

5
Saturday
14th Mar
29

25

4

8
Sunday
15th Mar
28

25

2

11

5-day weather forecast updated at 04:00 on Wednesday 11th 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 Wednesday 11th 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 2-5 mm of rainfall expected with 52% chance of some rain and a light breeze of 12 kph from the west.

29
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
11
UV index (Extreme)
52
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
12
kph wind from W

Guam weather for Thursday 12th March 2026

Expect isolated thunderstorms in Guam with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 7 (High) and 4 hours of bright sunshine. There are 10-20 mm of rainfall expected with 80% chance of some rain and a gentle breeze of 15 kph from the south.

28
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
7
UV index (High)
80
% chance of some rain
<20
mm of rainfall expected
L
low heat & humidity
15
kph wind from S

Guam weather for Friday 13th March 2026

Expect isolated thunderstorms in Guam with a maximum temperature of 28°C, moderate levels of heat & humidity, maximum UV of 5 (Moderate) and 1 hour of bright sunshine. There are 20-30 mm of rainfall expected with 79% chance of some rain and a moderate breeze of 21 kph from the south.

28
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
1
hour of sunshine
5
UV index (Moderate)
79
% chance of some rain
<30
mm of rainfall expected
M
moderate heat & humidity
21
kph wind from S

Guam weather for Saturday 14th March 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 4 hours of bright sunshine. There are 10-20 mm of rainfall expected with 52% chance of some rain and a gentle breeze of 19 kph from the west.

29
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
8
UV index (Very High)
52
% chance of some rain
<20
mm of rainfall expected
M
moderate heat & humidity
19
kph wind from W

Guam weather for Sunday 15th March 2026

Expect broken clouds in Guam with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 11+ (Extreme) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 19 kph from the north.