Guam weather live forecast

Today's maximum temperature in Guam is expected to be 27°C. Select a day from the live weather forecast for Guam (Agana) for more weather parameters.

Tuesday
14th Apr
27

25

1

3
Wednesday
15th Apr
29

26

2

6
Thursday
16th Apr
30

26

4

9
Friday
17th Apr
30

26

5

11
Saturday
18th Apr
30

25

7

11

5-day weather forecast updated at 04:00 on Tuesday 14th April 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 14th April 2026

Expect isolated thunderstorms in Guam with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 3 (Moderate) and 1 hour of bright sunshine. There are 50 mm or more of rainfall expected with 95% chance of some rain and a moderate gale of 60 kph from the west.

27
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
1
hour of sunshine
3
UV index (Moderate)
95
% chance of some rain
>50
mm or more of rainfall expected
L
low heat & humidity
60
kph wind from W

Guam weather for Wednesday 15th April 2026

Expect isolated thunderstorms in Guam with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 6 (High) and 2 hours of bright sunshine. There are 20-30 mm of rainfall expected with 82% chance of some rain and a moderate gale of 58 kph from the west.

29
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
2
hours of sunshine
6
UV index (High)
82
% chance of some rain
<30
mm of rainfall expected
M
moderate heat & humidity
58
kph wind from W

Guam weather for Thursday 16th April 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 4 hours of bright sunshine. There are 5-10 mm of rainfall expected with 82% chance of some rain and a strong breeze of 39 kph from the south-west.

30
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
9
UV index (Very High)
82
% chance of some rain
<10
mm of rainfall expected
M
moderate heat & humidity
39
kph wind from SW

Guam weather for Friday 17th April 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 0-2 mm of rainfall expected with 41% chance of some rain and a moderate breeze of 24 kph from the south-west.

30
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
11
UV index (Extreme)
41
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
24
kph wind from SW

Guam weather for Saturday 18th April 2026

Expect scattered clouds 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 0 mm of rainfall expected and a light breeze of 12 kph from the west.