St Simons Island weather live forecast

Today's maximum temperature in St Simons Island is expected to be 30°C. Select a day from the live weather forecast for St Simons Island, Georgia, USA for more weather parameters.

Wednesday
9th Sep
30

27

4

7
Thursday
10th Sep
30

26

5

9
Friday
11th Sep
31

26

4

8
Saturday
12th Sep
30

25

5

8
Sunday
13th Sep
30

25

6

4

5-day weather forecast updated at 04:03 on Wednesday 9th September 2026 GMT

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The 5-day weather forecast for Georgia (USA) (St Simons Island) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

St Simons Island weather forecast by day

Below are the detailed weather forecasts for St Simons Island for the next 5 days.

St Simons Island weather for Wednesday 9th September 2026

Expect isolated thunderstorms in St Simons Island, Georgia (USA) with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 4 hours of bright sunshine. There are 2-5 mm of rainfall expected with 87% chance of some rain and a moderate breeze of 21 kph from the east.

30
°C maximum temperature
27
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
7
UV index (High)
87
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
21
kph wind from E

St Simons Island weather for Thursday 10th September 2026

Expect isolated thunderstorms in St Simons Island, Georgia (USA) 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 2-5 mm of rainfall expected with 66% chance of some rain and a gentle breeze of 14 kph from the south.

30
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
9
UV index (Very High)
66
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
14
kph wind from S

St Simons Island weather for Friday 11th September 2026

Expect isolated thunderstorms in St Simons Island, Georgia (USA) with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 4 hours of bright sunshine. There are 5-10 mm of rainfall expected with 72% chance of some rain and a gentle breeze of 14 kph from the south.

31
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
8
UV index (Very High)
72
% chance of some rain
<10
mm of rainfall expected
M
moderate heat & humidity
14
kph wind from S

St Simons Island weather for Saturday 12th September 2026

Expect isolated thunderstorms in St Simons Island, Georgia (USA) 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 5-10 mm of rainfall expected with 81% chance of some rain and a gentle breeze of 14 kph from the south-west.

30
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
8
UV index (Very High)
81
% chance of some rain
<10
mm of rainfall expected
M
moderate heat & humidity
14
kph wind from SW

St Simons Island weather for Sunday 13th September 2026

Expect isolated thunderstorms in St Simons Island, Georgia (USA) with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 4 (Moderate) and 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 72% chance of some rain and a light breeze of 11 kph from the south-east.