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
16th Sep
30

26

8

7
Thursday
17th Sep
29

25

7

7
Friday
18th Sep
31

25

3

7
Saturday
19th Sep
30

24

8

8
Sunday
20th Sep
29

25

3

8

5-day weather forecast updated at 04:03 on Wednesday 16th 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 16th September 2026

Expect scattered clouds in St Simons Island, Georgia (USA) with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 27 kph from the north-east.

30
°C maximum temperature
26
°C minimum temperature
scattered clouds
8
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
M
moderate heat & humidity
27
kph wind from NE

St Simons Island weather for Thursday 17th September 2026

Expect broken clouds in St Simons Island, Georgia (USA) with a maximum temperature of 29°C, low levels of heat & humidity, maximum UV of 7 (High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 23 kph from the north-east.

29
°C maximum temperature
25
°C minimum temperature
broken clouds
7
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
23
kph wind from NE

St Simons Island weather for Friday 18th September 2026

Expect broken clouds in St Simons Island, Georgia (USA) with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the north-east.

31
°C maximum temperature
25
°C minimum temperature
broken clouds
3
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
M
moderate heat & humidity
13
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 8 (Very High) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 44% chance of some rain and a gentle breeze of 15 kph from the east.

30
°C maximum temperature
24
°C minimum temperature
isolated thunderstorms
8
hours of sunshine
8
UV index (Very High)
44
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
15
kph wind from E

St Simons Island weather for Sunday 20th 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 8 (Very High) and 3 hours of bright sunshine. There are 2-5 mm of rainfall expected with 76% chance of some rain and a gentle breeze of 17 kph from the east.