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.

Thursday
28th May
30

27

6

11
Friday
29th May
30

27

5

11
Saturday
30th May
31

27

6

11
Sunday
31st May
31

27

7

11
Monday
1st Jun
31

27

8

11

5-day weather forecast updated at 04:00 on Wednesday 27th 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 Thursday 28th 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 20-30 mm of rainfall expected with 50% chance of some rain and a moderate breeze of 20 kph from the south-east.

30
°C maximum temperature
27
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
11
UV index (Extreme)
50
% chance of some rain
<30
mm of rainfall expected
M
moderate heat & humidity
20
kph wind from SE

Guam weather for Friday 29th 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 20-30 mm of rainfall expected with 63% chance of some rain and a gentle breeze of 17 kph from the south-east.

30
°C maximum temperature
27
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
11
UV index (Extreme)
63
% chance of some rain
<30
mm of rainfall expected
M
moderate heat & humidity
17
kph wind from SE

Guam weather for Saturday 30th 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 6 hours of bright sunshine. There are 10-20 mm of rainfall expected with 54% chance of some rain and a gentle breeze of 14 kph from the south-east.

31
°C maximum temperature
27
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
11
UV index (Extreme)
54
% chance of some rain
<20
mm of rainfall expected
M
moderate heat & humidity
14
kph wind from SE

Guam weather for Sunday 31st 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 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 61% chance of some rain and a gentle breeze of 18 kph from the east.

31
°C maximum temperature
27
°C minimum temperature
isolated thunderstorms
7
hours of sunshine
11
UV index (Extreme)
61
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
18
kph wind from E

Guam weather for Monday 1st June 2026

Expect isolated thunderstorms in Guam with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 11+ (Extreme) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 62% chance of some rain and a gentle breeze of 17 kph from the east.