Agana weather live forecast

Today's maximum temperature in Agana is expected to be 29°C. Select a day from the live weather forecast for Agana, Guam for more weather parameters.

Thursday
18th Dec
29

26

7

8
Friday
19th Dec
30

26

6

7
Saturday
20th Dec
30

26

5

8
Sunday
21st Dec
30

26

5

7
Monday
22nd Dec
30

26

6

9

5-day weather forecast updated at 04:00 on Wednesday 17th December 2025 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.

Agana weather forecast by day

Below are the detailed weather forecasts for Agana for the next 5 days.

Agana weather for Thursday 18th December 2025

Expect isolated thunderstorms in Agana, Guam with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 42% chance of some rain and a moderate breeze of 22 kph from the east.

29
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
7
hours of sunshine
8
UV index (Very High)
42
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
22
kph wind from E

Agana weather for Friday 19th December 2025

Expect isolated thunderstorms in Agana, Guam with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 59% chance of some rain and a moderate breeze of 20 kph from the east.

30
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
7
UV index (High)
59
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
20
kph wind from E

Agana weather for Saturday 20th December 2025

Expect isolated thunderstorms in Agana, Guam with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 5 hours of bright sunshine. There are 10-20 mm of rainfall expected with 75% chance of some rain and a moderate breeze of 25 kph from the east.

30
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
8
UV index (Very High)
75
% chance of some rain
<20
mm of rainfall expected
M
moderate heat & humidity
25
kph wind from E

Agana weather for Sunday 21st December 2025

Expect isolated thunderstorms in Agana, Guam with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 66% chance of some rain and a moderate breeze of 28 kph from the east.

30
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
7
UV index (High)
66
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
28
kph wind from E

Agana weather for Monday 22nd December 2025

Expect isolated thunderstorms in Agana, Guam with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 72% chance of some rain and a moderate breeze of 26 kph from the east.