St Simons Island weather live forecast

Today's maximum temperature in St Simons Island is expected to be 31°C. Select a day from the live weather forecast for St Simons Island, Georgia, USA for more weather parameters.

Tuesday
15th Sep
31

27

7

6
Wednesday
16th Sep
29

26

6

6
Thursday
17th Sep
29

25

7

7
Friday
18th Sep
30

24

4

7
Saturday
19th Sep
30

25

2

7

5-day weather forecast updated at 04:03 on Tuesday 15th 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 Tuesday 15th 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 6 (High) and 7 hours of bright sunshine. There are 2-5 mm of rainfall expected with 72% chance of some rain and a moderate breeze of 28 kph from the east.

31
°C maximum temperature
27
°C minimum temperature
isolated thunderstorms
7
hours of sunshine
6
UV index (High)
72
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
28
kph wind from E

St Simons Island weather for Wednesday 16th September 2026

Expect isolated thunderstorms in St Simons Island, Georgia (USA) with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 6 (High) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 17% chance of some rain and a moderate breeze of 27 kph from the north-east.

29
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
6
UV index (High)
17
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
27
kph wind from NE

St Simons Island weather for Thursday 17th September 2026

Expect isolated thunderstorms in St Simons Island, Georgia (USA) with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 43% chance of some rain and a moderate breeze of 25 kph from the north-east.

29
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
7
hours of sunshine
7
UV index (High)
43
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
25
kph wind from NE

St Simons Island weather for Friday 18th 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 63% chance of some rain and a gentle breeze of 19 kph from the north-east.

30
°C maximum temperature
24
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
7
UV index (High)
63
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
19
kph wind from NE

St Simons Island weather for Saturday 19th 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 2 hours of bright sunshine. There are 5-10 mm of rainfall expected with 74% chance of some rain and a gentle breeze of 16 kph from the east.