St Simons Island weather live forecast

Today's maximum temperature in St Simons Island is expected to be 15°C. Select a day from the live weather forecast for St Simons Island, Georgia, USA for more weather parameters.

Tuesday
16th Dec
15

2

9

3
Wednesday
17th Dec
18

9

2

3
Thursday
18th Dec
21

14

3

2
Friday
19th Dec
20

8

6

3
Saturday
20th Dec
18

7

8

3

5-day weather forecast updated at 04:03 on Tuesday 16th December 2025 GMT

More about St Simons Island

St Simons Island by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Georgia

Momondo: Compare latest car hire deals

Sale

Search & compare the best car hire deals
Free 48-hour cancellation policy & no hidden charges
Check prices with Avis, Europcar, Sixt & more

Go to Momondo deal >>

View all Momondo offers

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 16th December 2025

Expect clear skies in St Simons Island, Georgia (USA) with a maximum temperature of 15°C, maximum UV of 3 (Moderate) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the north.

15
°C maximum temperature
2
°C minimum temperature
clear skies
9
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
15
°C wind chill
12
kph wind from N

St Simons Island weather for Wednesday 17th December 2025

Expect broken clouds in St Simons Island, Georgia (USA) with a maximum temperature of 18°C, maximum UV of 3 (Moderate) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the north-east.

18
°C maximum temperature
9
°C minimum temperature
broken clouds
2
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
18
°C wind chill
10
kph wind from NE

St Simons Island weather for Thursday 18th December 2025

Expect mostly cloudy with light rain in St Simons Island, Georgia (USA) with a maximum temperature of 21°C, maximum UV of 2 (Low) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 25% chance of some rain and a gentle breeze of 14 kph from the south-east.

21
°C maximum temperature
14
°C minimum temperature
mostly cloudy with light rain
3
hours of sunshine
2
UV index (Low)
25
% chance of some rain
<2
mm of rainfall expected
21
°C wind chill
14
kph wind from SE

St Simons Island weather for Friday 19th December 2025

Expect scattered clouds in St Simons Island, Georgia (USA) with a maximum temperature of 20°C, maximum UV of 3 (Moderate) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 20 kph from the north-west.

20
°C maximum temperature
8
°C minimum temperature
scattered clouds
6
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
20
°C wind chill
20
kph wind from NW

St Simons Island weather for Saturday 20th December 2025

Expect clear skies in St Simons Island, Georgia (USA) with a maximum temperature of 18°C, maximum UV of 3 (Moderate) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the north.