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.

Tuesday
7th Jul
30

27

5

9
Wednesday
8th Jul
30

27

3

11
Thursday
9th Jul
31

27

7

11
Friday
10th Jul
31

27

6

11
Saturday
11th Jul
30

27

7

11

5-day weather forecast updated at 04:00 on Monday 6th July 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 7th July 2026

Expect isolated thunderstorms in Guam with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 5 hours of bright sunshine. There are 10-20 mm of rainfall expected with 76% chance of some rain and a strong breeze of 41 kph from the south.

30
°C maximum temperature
27
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
9
UV index (Very High)
76
% chance of some rain
<20
mm of rainfall expected
M
moderate heat & humidity
41
kph wind from S

Guam weather for Wednesday 8th July 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 20-30 mm of rainfall expected with 72% chance of some rain and a moderate breeze of 26 kph from the south.

30
°C maximum temperature
27
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
11
UV index (Extreme)
72
% chance of some rain
<30
mm of rainfall expected
M
moderate heat & humidity
26
kph wind from S

Guam weather for Thursday 9th July 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 5-10 mm of rainfall expected with 76% chance of some rain and a light breeze of 10 kph from the north-east.

31
°C maximum temperature
27
°C minimum temperature
isolated thunderstorms
7
hours of sunshine
11
UV index (Extreme)
76
% chance of some rain
<10
mm of rainfall expected
M
moderate heat & humidity
10
kph wind from NE

Guam weather for Friday 10th July 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 69% chance of some rain and a gentle breeze of 14 kph from the north-east.

31
°C maximum temperature
27
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
11
UV index (Extreme)
69
% chance of some rain
<20
mm of rainfall expected
M
moderate heat & humidity
14
kph wind from NE

Guam weather for Saturday 11th July 2026

Expect isolated thunderstorms in Guam with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 11+ (Extreme) and 7 hours of bright sunshine. There are 10-20 mm of rainfall expected with 74% chance of some rain and a gentle breeze of 19 kph from the north-east.