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
10th Jul
30

26

7

11
Saturday
11th Jul
29

26

6

10
Sunday
12th Jul
29

26

5

9
Monday
13th Jul
30

26

6

11
Tuesday
14th Jul
30

26

6

9

5-day weather forecast updated at 04:00 on Thursday 9th 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 Friday 10th 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 2-5 mm of rainfall expected with 13% chance of some rain and a gentle breeze of 16 kph from the north-east.

30
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
7
hours of sunshine
11
UV index (Extreme)
13
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
16
kph wind from NE

Guam weather for Saturday 11th July 2026

Expect isolated thunderstorms in Guam with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 10 (Very High) and 6 hours of bright sunshine. There are 5-10 mm of rainfall expected with 77% chance of some rain and a moderate breeze of 21 kph from the north-east.

29
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
10
UV index (Very High)
77
% chance of some rain
<10
mm of rainfall expected
M
moderate heat & humidity
21
kph wind from NE

Guam weather for Sunday 12th July 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 5 hours of bright sunshine. There are 20-30 mm of rainfall expected with 89% chance of some rain and a moderate breeze of 21 kph from the east.

29
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
9
UV index (Very High)
89
% chance of some rain
<30
mm of rainfall expected
M
moderate heat & humidity
21
kph wind from E

Guam weather for Monday 13th 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 6 hours of bright sunshine. There are 20-30 mm of rainfall expected with 88% chance of some rain and a moderate breeze of 23 kph from the south-east.

30
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
11
UV index (Extreme)
88
% chance of some rain
<30
mm of rainfall expected
M
moderate heat & humidity
23
kph wind from SE

Guam weather for Tuesday 14th 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 6 hours of bright sunshine. There are 30-40 mm of rainfall expected with 90% chance of some rain and a moderate breeze of 24 kph from the south-west.