Guam weather live forecast

Today's maximum temperature in Guam is expected to be 31°C. Select a day from the live weather forecast for Guam (Agana) for more weather parameters.

Wednesday
1st Jul
31

27

7

11
Thursday
2nd Jul
31

27

7

11
Friday
3rd Jul
31

27

6

11
Saturday
4th Jul
31

27

6

11
Sunday
5th Jul
30

27

6

2

5-day weather forecast updated at 04:00 on Tuesday 30th June 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 1st 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 2-5 mm of rainfall expected with 50% chance of some rain and a gentle breeze of 15 kph from the east.

31
°C maximum temperature
27
°C minimum temperature
isolated thunderstorms
7
hours of sunshine
11
UV index (Extreme)
50
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
15
kph wind from E

Guam weather for Thursday 2nd 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 0-2 mm of rainfall expected with 55% chance of some rain and a gentle breeze of 15 kph from the north-east.

31
°C maximum temperature
27
°C minimum temperature
isolated thunderstorms
7
hours of sunshine
11
UV index (Extreme)
55
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
15
kph wind from NE

Guam weather for Friday 3rd 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 2-5 mm of rainfall expected with 58% chance of some rain and a light breeze of 11 kph from the north-east.

31
°C maximum temperature
27
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
11
UV index (Extreme)
58
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
11
kph wind from NE

Guam weather for Saturday 4th 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 5-10 mm of rainfall expected with 65% chance of some rain and a gentle breeze of 16 kph from the north.

31
°C maximum temperature
27
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
11
UV index (Extreme)
65
% chance of some rain
<10
mm of rainfall expected
M
moderate heat & humidity
16
kph wind from N

Guam weather for Sunday 5th July 2026

Expect isolated thunderstorms in Guam with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 2 (Low) and 6 hours of bright sunshine. There are 20-30 mm of rainfall expected with 88% chance of some rain and a fresh breeze of 32 kph from the north.