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.

Wednesday
25th Mar
27

24

5

11
Thursday
26th Mar
28

25

4

11
Friday
27th Mar
29

25

4

11
Saturday
28th Mar
29

25

5

11
Sunday
29th Mar
29

25

5

11

5-day weather forecast updated at 04:00 on Wednesday 25th 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 25th March 2026

Expect isolated thunderstorms in Guam with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 11+ (Extreme) and 5 hours of bright sunshine. There are 10-20 mm of rainfall expected with 51% chance of some rain and a light breeze of 11 kph from the east.

27
°C maximum temperature
24
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
11
UV index (Extreme)
51
% chance of some rain
<20
mm of rainfall expected
L
low heat & humidity
11
kph wind from E

Guam weather for Thursday 26th 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 5-10 mm of rainfall expected with 71% chance of some rain and a light breeze of 9 kph from the south.

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
M
moderate heat & humidity
9
kph wind from S

Guam weather for Friday 27th March 2026

Expect broken clouds 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 0 mm of rainfall expected and a light breeze of 7 kph from the south-west.

29
°C maximum temperature
25
°C minimum temperature
broken clouds
4
hours of sunshine
11
UV index (Extreme)
0
mm of rainfall expected
M
moderate heat & humidity
7
kph wind from SW

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 5 hours of bright sunshine. There are 2-5 mm of rainfall expected with 53% chance of some rain and a light breeze of 8 kph from the north.

29
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
11
UV index (Extreme)
53
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
8
kph wind from N

Guam weather for Sunday 29th 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 62% chance of some rain and a gentle breeze of 14 kph from the north-east.