St Simons Island weather live forecast

Today's maximum temperature in St Simons Island is expected to be 29°C. Select a day from the live weather forecast for St Simons Island, Georgia, USA for more weather parameters.

Wednesday
23rd Sep
29

25

5

7
Thursday
24th Sep
26

22

4

7
Friday
25th Sep
26

19

12

8
Saturday
26th Sep
27

18

11

8
Sunday
27th Sep
28

18

8

7

5-day weather forecast updated at 04:03 on Wednesday 23rd 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 23rd 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 5 hours of bright sunshine. There are 2-5 mm of rainfall expected with 73% chance of some rain and a moderate breeze of 22 kph from the north-east.

29
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
7
UV index (High)
73
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
22
kph wind from NE

St Simons Island weather for Thursday 24th September 2026

Expect mostly cloudy with light rain in St Simons Island, Georgia (USA) with a maximum temperature of 26°C, low levels of heat & humidity, maximum UV of 7 (High) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 24% chance of some rain and a moderate breeze of 23 kph from the north.

26
°C maximum temperature
22
°C minimum temperature
mostly cloudy with light rain
4
hours of sunshine
7
UV index (High)
24
% chance of some rain
<2
mm of rainfall expected
L
low heat & humidity
23
kph wind from N

St Simons Island weather for Friday 25th September 2026

Expect clear skies in St Simons Island, Georgia (USA) with a maximum temperature of 26°C, low levels of heat & humidity, maximum UV of 8 (Very High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 20 kph from the north.

26
°C maximum temperature
19
°C minimum temperature
clear skies
12
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
20
kph wind from N

St Simons Island weather for Saturday 26th September 2026

Expect clear skies in St Simons Island, Georgia (USA) with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 8 (Very High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the north.

27
°C maximum temperature
18
°C minimum temperature
clear skies
11
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
15
kph wind from N

St Simons Island weather for Sunday 27th September 2026

Expect scattered clouds in St Simons Island, Georgia (USA) with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 7 (High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the north-west.