Guam weather forecast

Get the latest coronavirus (COVID-19) updates for Guam with current travel advice, statistics and online resources.

Sunday
20th Sep

30

26

5
Monday
21st Sep

30

26

5
Tuesday
22nd Sep

30

26

6
Wednesday
23rd Sep

31

26

7
Thursday
24th Sep

31

27

6

Last updated at 04:00 on Saturday 19th September 2020 GMT

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

The 5-day weather forecast for Guam is provided by the Swiss meteorological agency, MeteoBlue. Find out more about our data sources.

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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 Sunday 20th September 2020

Below is the Guam weather forecast for Sunday 20th September 2020. Expect isolated thunderstorms in Guam with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 5 hours of bright sunshine. There are 10-20 mm of rainfall expected with 60% chance of some rain and a gentle breeze of 18 kph from the south.

30
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
9
UV index (Very High)
60
% chance of some rain
<20
mm of rainfall expected
M
moderate heat & humidity
18
kph wind from S

Guam weather for Monday 21st September 2020

Below is the Guam weather forecast for Monday 21st September 2020. 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 10-20 mm of rainfall expected with 66% chance of some rain and a gentle breeze of 18 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
<20
mm of rainfall expected
M
moderate heat & humidity
18
kph wind from SW

Guam weather for Tuesday 22nd September 2020

Below is the Guam weather forecast for Tuesday 22nd September 2020. 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 2-5 mm of rainfall expected with 35% chance of some rain and a light breeze of 9 kph from the south.

30
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
11
UV index (Extreme)
35
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
9
kph wind from S

Guam weather for Wednesday 23rd September 2020

Below is the Guam weather forecast for Wednesday 23rd September 2020. Expect isolated thunderstorms in Guam with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 11+ (Extreme) and 7 hours of bright sunshine. There are 5-10 mm of rainfall expected with 55% chance of some rain and a gentle breeze of 16 kph from the north-east.

31
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
7
hours of sunshine
11
UV index (Extreme)
55
% chance of some rain
<10
mm of rainfall expected
M
moderate heat & humidity
16
kph wind from NE

Guam weather for Thursday 24th September 2020

Below is the Guam weather forecast for Thursday 24th September 2020. Expect isolated thunderstorms in Guam with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 11+ (Extreme) and 6 hours of bright sunshine. There are 10-20 mm of rainfall expected with 80% chance of some rain and a gentle breeze of 14 kph from the north-east.