Guam weather live forecast

Today's maximum temperature in Guam is expected to be 84°F. Select a day from the live weather forecast for Guam (Agana) for more weather parameters.

Friday
23rd Jan
84

79

4

10
Saturday
24th Jan
86

79

6

9
Sunday
25th Jan
84

77

4

8
Monday
26th Jan
82

77

3

8
Tuesday
27th Jan
82

77

3

1

5-day weather forecast updated at 04:00 on Thursday 22nd January 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 23rd January 2026

Expect isolated thunderstorms in Guam with a maximum temperature of 84°F, moderate levels of heat & humidity, maximum UV of 10 (Very High) and 4 hours of bright sunshine. There are 10-20 mm of rainfall expected with 66% chance of some rain and a moderate breeze of 14 mph from the south.

84
°F maximum temperature
79
°F minimum temperature
isolated thunderstorms
4
hours of sunshine
10
UV index (Very High)
66
% chance of some rain
<20
mm of rainfall expected
M
moderate heat & humidity
14
mph wind from S

Guam weather for Saturday 24th January 2026

Expect isolated thunderstorms in Guam with a maximum temperature of 86°F, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 6 hours of bright sunshine. There are 10-20 mm of rainfall expected with 68% chance of some rain and a gentle breeze of 11 mph from the south.

86
°F maximum temperature
79
°F minimum temperature
isolated thunderstorms
6
hours of sunshine
9
UV index (Very High)
68
% chance of some rain
<20
mm of rainfall expected
M
moderate heat & humidity
11
mph wind from S

Guam weather for Sunday 25th January 2026

Expect isolated thunderstorms in Guam with a maximum temperature of 84°F, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 4 hours of bright sunshine. There are 10-20 mm of rainfall expected with 80% chance of some rain and a light breeze of 6 mph from the north-east.

84
°F maximum temperature
77
°F minimum temperature
isolated thunderstorms
4
hours of sunshine
8
UV index (Very High)
80
% chance of some rain
<20
mm of rainfall expected
M
moderate heat & humidity
6
mph wind from NE

Guam weather for Monday 26th January 2026

Expect isolated thunderstorms in Guam with a maximum temperature of 82°F, low levels of heat & humidity, maximum UV of 8 (Very High) and 3 hours of bright sunshine. There are 10-20 mm of rainfall expected with 80% chance of some rain and a gentle breeze of 10 mph from the north-east.

82
°F maximum temperature
77
°F minimum temperature
isolated thunderstorms
3
hours of sunshine
8
UV index (Very High)
80
% chance of some rain
<20
mm of rainfall expected
L
low heat & humidity
10
mph wind from NE

Guam weather for Tuesday 27th January 2026

Expect isolated thunderstorms in Guam with a maximum temperature of 82°F, low levels of heat & humidity, maximum UV of 1 (Low) and 3 hours of bright sunshine. There are 20-30 mm of rainfall expected with 85% chance of some rain and a gentle breeze of 12 mph from the east.