Guam weather live forecast

Today's maximum temperature in Guam is expected to be 28°C. Select a day from the live weather forecast for Guam (Agana) for more weather parameters.

Tuesday
13th Oct
28

25

5

9
Wednesday
14th Oct
28

25

5

11
Thursday
15th Oct
28

25

6

11
Friday
16th Oct
29

25

4

11
Saturday
17th Oct
28

25

5

11

5-day weather forecast updated at 04:00 on Monday 12th October 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 Tuesday 13th October 2026

Expect isolated thunderstorms in Guam with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 9 (Very High) and 5 hours of bright sunshine. There are 2-5 mm of rainfall expected with 36% chance of some rain and little or no wind of 6 kph from the west.

28
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
9
UV index (Very High)
36
% chance of some rain
<5
mm of rainfall expected
L
low heat & humidity
6
kph wind from W

Guam weather for Wednesday 14th October 2026

Expect broken clouds in Guam with a maximum temperature of 28°C, moderate levels of heat & humidity, maximum UV of 11 (Extreme) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the east.

28
°C maximum temperature
25
°C minimum temperature
broken clouds
5
hours of sunshine
11
UV index (Extreme)
0
mm of rainfall expected
L
low heat & humidity
7
kph wind from E

Guam weather for Thursday 15th October 2026

Expect broken clouds in Guam with a maximum temperature of 28°C, moderate levels of heat & humidity, maximum UV of 11 (Extreme) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the north-east.

28
°C maximum temperature
25
°C minimum temperature
broken clouds
6
hours of sunshine
11
UV index (Extreme)
0
mm of rainfall expected
M
moderate heat & humidity
11
kph wind from NE

Guam weather for Friday 16th October 2026

Expect isolated thunderstorms in Guam with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 11 (Extreme) and 4 hours of bright sunshine. There are 2-5 mm of rainfall expected with 56% chance of some rain and a gentle breeze of 13 kph from the north-east.

29
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
11
UV index (Extreme)
56
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
13
kph wind from NE

Guam weather for Saturday 17th October 2026

Expect isolated thunderstorms in Guam with a maximum temperature of 28°C, moderate levels of heat & humidity, maximum UV of 11 (Extreme) and 5 hours of bright sunshine. There are 40-50 mm of rainfall expected with 87% chance of some rain and a moderate breeze of 22 kph from the north.