Guam weather live forecast

Today's maximum temperature in Guam is expected to be 30°C. Select a day from the live weather forecast for Guam (Agana) for more weather parameters.

Friday
8th May
30

26

6

11
Saturday
9th May
30

27

3

11
Sunday
10th May
30

27

3

11
Monday
11th May
30

27

5

11
Tuesday
12th May
31

26

5

11

5-day weather forecast updated at 04:00 on Thursday 7th May 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 Friday 8th May 2026

Expect isolated thunderstorms in Guam with a maximum temperature of 30°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 37% chance of some rain and a fresh breeze of 29 kph from the east.

30
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
11
UV index (Extreme)
37
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
29
kph wind from E

Guam weather for Saturday 9th May 2026

Expect isolated thunderstorms in Guam with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 11+ (Extreme) and 3 hours of bright sunshine. There are 2-5 mm of rainfall expected with 36% chance of some rain and a moderate breeze of 26 kph from the east.

30
°C maximum temperature
27
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
11
UV index (Extreme)
36
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
26
kph wind from E

Guam weather for Sunday 10th May 2026

Expect isolated thunderstorms in Guam with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 11 (Extreme) and 3 hours of bright sunshine. There are 2-5 mm of rainfall expected with 63% chance of some rain and a moderate breeze of 23 kph from the east.

30
°C maximum temperature
27
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
11
UV index (Extreme)
63
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
23
kph wind from E

Guam weather for Monday 11th May 2026

Expect isolated thunderstorms in Guam with a maximum temperature of 30°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 58% chance of some rain and a moderate breeze of 25 kph from the east.

30
°C maximum temperature
27
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
11
UV index (Extreme)
58
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
25
kph wind from E

Guam weather for Tuesday 12th May 2026

Expect isolated thunderstorms in Guam with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 11 (Extreme) and 5 hours of bright sunshine. There are 30-40 mm of rainfall expected with 65% chance of some rain and a moderate breeze of 21 kph from the east.