Guam weather live forecast

Today's maximum temperature in Guam is expected to be 29°C. Select a day from the live weather forecast for Guam (Agana) for more weather parameters.

Saturday
3rd Oct
29

26

3

8
Sunday
4th Oct
29

26

4

9
Monday
5th Oct
29

26

3

9
Tuesday
6th Oct
29

26

3

8
Wednesday
7th Oct
29

25

0

9

5-day weather forecast updated at 04:00 on Friday 2nd October 2026 GMT

More about Guam

Guam by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Guam

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 Saturday 3rd October 2026

Expect isolated thunderstorms in Guam with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 3 hours of bright sunshine. There are 20-30 mm of rainfall expected with 100% chance of some rain and a strong breeze of 45 kph from the south-west.

29
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
8
UV index (Very High)
100
% chance of some rain
<30
mm of rainfall expected
M
moderate heat & humidity
45
kph wind from SW

Guam weather for Sunday 4th October 2026

Expect isolated thunderstorms in Guam with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 4 hours of bright sunshine. There are 10-20 mm of rainfall expected with 92% chance of some rain and a fresh breeze of 38 kph from the south-west.

29
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
9
UV index (Very High)
92
% chance of some rain
<20
mm of rainfall expected
M
moderate heat & humidity
38
kph wind from SW

Guam weather for Monday 5th October 2026

Expect isolated thunderstorms in Guam with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 3 hours of bright sunshine. There are 10-20 mm of rainfall expected with 97% chance of some rain and a fresh breeze of 34 kph from the south-west.

29
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
9
UV index (Very High)
97
% chance of some rain
<20
mm of rainfall expected
M
moderate heat & humidity
34
kph wind from SW

Guam weather for Tuesday 6th October 2026

Expect isolated thunderstorms in Guam with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 3 hours of bright sunshine. There are 20-30 mm of rainfall expected with 97% chance of some rain and a moderate breeze of 27 kph from the south-west.

29
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
8
UV index (Very High)
97
% chance of some rain
<30
mm of rainfall expected
M
moderate heat & humidity
27
kph wind from SW

Guam weather for Wednesday 7th October 2026

Expect isolated thunderstorms in Guam with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 9 (Very High) and no hours of bright sunshine. There are 50 mm or more of rainfall expected with 98% chance of some rain and a moderate breeze of 20 kph from the south-west.