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.

Thursday
16th Jul
30

26

6

11
Friday
17th Jul
30

26

4

11
Saturday
18th Jul
30

26

5

11
Sunday
19th Jul
30

26

3

11
Monday
20th Jul
30

26

6

11

5-day weather forecast updated at 04:00 on Wednesday 15th July 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 Thursday 16th 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 5-10 mm of rainfall expected with 88% chance of some rain and a moderate breeze of 22 kph from the south-west.

30
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
11
UV index (Extreme)
88
% chance of some rain
<10
mm of rainfall expected
M
moderate heat & humidity
22
kph wind from SW

Guam weather for Friday 17th 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 4 hours of bright sunshine. There are 10-20 mm of rainfall expected with 79% chance of some rain and a moderate breeze of 20 kph from the south-west.

30
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
11
UV index (Extreme)
79
% chance of some rain
<20
mm of rainfall expected
M
moderate heat & humidity
20
kph wind from SW

Guam weather for Saturday 18th 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 5 hours of bright sunshine. There are 5-10 mm of rainfall expected with 66% chance of some rain and a gentle breeze of 16 kph from the south-west.

30
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
11
UV index (Extreme)
66
% chance of some rain
<10
mm of rainfall expected
M
moderate heat & humidity
16
kph wind from SW

Guam weather for Sunday 19th 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 5-10 mm of rainfall expected with 62% chance of some rain and a light breeze of 10 kph from the south-west.

30
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
11
UV index (Extreme)
62
% chance of some rain
<10
mm of rainfall expected
M
moderate heat & humidity
10
kph wind from SW

Guam weather for Monday 20th 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 0-2 mm of rainfall expected with 56% chance of some rain and a light breeze of 9 kph from the south.