Guam weather forecast

Get the latest coronavirus (Covid-19) updates for Guam with current travel advice and statistics on new cases per 100,000 and vaccine.

Thursday
23rd Sep

31

27

4
Friday
24th Sep

31

27

5
Saturday
25th Sep

31

27

4
Sunday
26th Sep

31

27

5
Monday
27th Sep

31

27

5

Last updated at 04:00 on Wednesday 22nd September 2021 GMT

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The 5-day weather forecast for Guam 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 Thursday 23rd September 2021

Below is the Guam weather forecast for Thursday 23rd September 2021. Expect isolated thunderstorms in Guam with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 4 hours of bright sunshine. There are 50 mm or more of rainfall expected with 100% chance of some rain and a moderate breeze of 22 kph from the south.

31
°C maximum temperature
27
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
7
UV index (High)
100
% chance of some rain
>50
mm or more of rainfall expected
M
moderate heat & humidity
22
kph wind from S

Guam weather for Friday 24th September 2021

Below is the Guam weather forecast for Friday 24th September 2021. Expect isolated thunderstorms in Guam with a maximum temperature of 31°C, high levels of heat & humidity, maximum UV of 7 (High) and 5 hours of bright sunshine. There are 20-30 mm of rainfall expected with 92% chance of some rain and a gentle breeze of 19 kph from the south.

31
°C maximum temperature
27
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
7
UV index (High)
92
% chance of some rain
<30
mm of rainfall expected
H
high heat & humidity
19
kph wind from S

Guam weather for Saturday 25th September 2021

Below is the Guam weather forecast for Saturday 25th September 2021. Expect isolated thunderstorms in Guam with a maximum temperature of 31°C, high levels of heat & humidity, maximum UV of 11 (Extreme) and 4 hours of bright sunshine. There are 10-20 mm of rainfall expected with 66% chance of some rain and a gentle breeze of 14 kph from the south-west.

31
°C maximum temperature
27
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
11
UV index (Extreme)
66
% chance of some rain
<20
mm of rainfall expected
M
moderate heat & humidity
14
kph wind from SW

Guam weather for Sunday 26th September 2021

Below is the Guam weather forecast for Sunday 26th September 2021. Expect isolated thunderstorms in Guam with a maximum temperature of 31°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 60% chance of some rain and a gentle breeze of 18 kph from the south-west.

31
°C maximum temperature
27
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
11
UV index (Extreme)
60
% chance of some rain
<20
mm of rainfall expected
M
moderate heat & humidity
18
kph wind from SW

Guam weather for Monday 27th September 2021

Below is the Guam weather forecast for Monday 27th September 2021. Expect isolated thunderstorms in Guam with a maximum temperature of 31°C, high levels of heat & humidity, maximum UV of 11 (Extreme) and 5 hours of bright sunshine. There are 10-20 mm of rainfall expected with 58% chance of some rain and a gentle breeze of 16 kph from the south-west.