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.

Sunday
14th Jun
31

27

6

11
Monday
15th Jun
31

27

7

11
Tuesday
16th Jun
31

27

5

10
Wednesday
17th Jun
31

27

6

11
Thursday
18th Jun
31

26

6

11

5-day weather forecast updated at 04:00 on Saturday 13th 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 Sunday 14th 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 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 54% chance of some rain and a light breeze of 12 kph from the east.

31
°C maximum temperature
27
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
11
UV index (Extreme)
54
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
12
kph wind from E

Guam weather for Monday 15th 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 7 hours of bright sunshine. There are 2-5 mm of rainfall expected with 42% 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)
42
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
15
kph wind from E

Guam weather for Tuesday 16th June 2026

Expect isolated thunderstorms in Guam with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 10 (Very High) and 5 hours of bright sunshine. There are 5-10 mm of rainfall expected with 71% chance of some rain and a gentle breeze of 13 kph from the north-east.

31
°C maximum temperature
27
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
10
UV index (Very High)
71
% chance of some rain
<10
mm of rainfall expected
M
moderate heat & humidity
13
kph wind from NE

Guam weather for Wednesday 17th 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 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 64% chance of some rain and a light breeze of 12 kph from the north-east.

31
°C maximum temperature
27
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
11
UV index (Extreme)
64
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
12
kph wind from NE

Guam weather for Thursday 18th 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 6 hours of bright sunshine. There are 30-40 mm of rainfall expected with 83% chance of some rain and a gentle breeze of 15 kph from the north.