Saint Simons Island (GA)
December
Weather in Saint Simons Island, Georgia for December 2025
Your guide to Saint Simons Island weather in December - trends and predictions
In general, the average temperature in Saint Simons Island at the beginning of December is 13.9 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 17.3 °F by the end of December.
Saint Simons Island experiences moderate rainfall in December, with an average of 6 rainy days and a total precipitation of 30.4 mm.
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Temperatures
Rain 🌧️
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25
Dry days
6
Rainy days
0
Snow days
16°/10°
Temperatures
18 km/h
Avg max wind
74 %
Avg humidity
Saint Simons Island Weather December
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Temperatures trend during December in Saint Simons Island
See the weather trend as well as the moving average line
December weather in Saint Simons Island day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Dec. 1 |  Sunny | 16° /5° | 0 mm | 5 | |
| Dec. 2 | Sunny | 15° /5° | 0 mm | 5 | |
| Dec. 3 | Sunny | 10° /4° | 0 mm | 4 | |
| Dec. 4 | Sunny | 13° /3° | 0 mm | 4 | |
| Dec. 5 |  Overcast | 18° /8° | 0 mm | 4 | |
| Dec. 6 | Overcast | 13° /5° | 0 mm | 3 | |
| Dec. 7 | Sunny | 12° /3° | 0 mm | 4 | |
| Dec. 8 | Overcast | 18° /5° | 0 mm | 4 | |
| Dec. 9 | Overcast | 20° /13° | 0 mm | 5 | |
| Dec. 10 | Overcast | 22° /16° | 0 mm | 5 | |
| Dec. 11 |  Moderate or heavy rain shower | 19° /9° | 10.3 mm | 4 | |
| Dec. 12 | Sunny | 13° /4° | 0 mm | 4 | |
| Dec. 13 | Sunny | 15° /8° | 0 mm | 5 | |
| Dec. 14 | Overcast | 17° /14° | 2.2 mm | 4 | |
| Dec. 15 | Overcast | 18° /13° | 0.1 mm | 4 | |
| Dec. 16 | Overcast | 17° /13° | 0 mm | 4 | |
| Dec. 17 | Overcast | 21° /15° | 0 mm | 5 | |
| Dec. 18 |  Patchy rain possible | 20° /16° | 0.6 mm | 5 | |
| Dec. 19 | Overcast | 21° /16° | 0 mm | 5 | |
| Dec. 20 | Overcast | 18° /11° | 0 mm | 4 | |
| Dec. 21 | Sunny | 12° /4° | 0 mm | 4 | |
| Dec. 22 |  Partly cloudy | 10° /6° | 0 mm | 4 | |
| Dec. 23 | Patchy rain possible | 9° /7° | 1.8 mm | 2 | |
| Dec. 24 | Overcast | 14° /7° | 0 mm | 3 | |
| Dec. 25 |  Cloudy | 15° /8° | 0 mm | 3 | |
| Dec. 26 | Patchy rain possible | 13° /12° | 0.2 mm | 3 | |
| Dec. 27 | Patchy rain possible | 18° /12° | 0.2 mm | 4 | |
| Dec. 28 | Patchy rain possible | 20° /16° | 10.5 mm | 4 | |
| Dec. 29 | Moderate or heavy rain shower | 19° /17° | 4.4 mm | 4 | |
| Dec. 30 | Cloudy | 18° /14° | 0.1 mm | 4 | |
| Dec. 31 |  Fog | 18° /12° | 0 mm | 4 | |
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Important Notice
Our weather forecast for Saint Simons Island in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Saint Simons Island forecast closer to your planned date for the most up-to-date weather information.
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Saint Simons Island in December - FAQ
What are the expected maximum and minimum temperatures in Saint Simons Island during December?
Enjoy moderate daytime temperatures of up to 16° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Saint Simons Island during December?
In December, Saint Simons Island can expect light to moderate rainfall, totaling 30.4 mm across approximately 6 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Saint Simons Island during December?
The average wind speed in Saint Simons Island during December is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
December rainfall patterns in Saint Simons Island
Explore the daily rainfall trends and prepare for Saint Simons Islands December weather 💧
Typically, Saint Simons Island has 6 rainy days in December with a total of 30.4 mm of rainfall.
UV exposure in Saint Simons Island during December
Stay informed about UV levels for safe outdoor activities throughout the month of December ☀️
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Where is Saint Simons Island?Get accurate weather forecasts for Saint Simons Island, located at latitude 31.151 and longitude -81.37. Stay updated with localized weather information tailored for Saint Simons Island.
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