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St Simons Island weather in August 2026
Expect daytime maximum temperatures of 31°C in St Simons Island, Georgia (USA) in August and very high heat and humidity based on long-term weather averages. There are 8 hours of sunshine per day on average with 14 days with some rainfall and typically 169 mm of rainfall in the month.
- 31°C max day temperature
31 - 8 hours of sunshine per day
- 14 days with some rainfall
14 - 23°C min night temperature
23 - 13 hours of daylight per day
13 - Very High heat & humidity
VH - 169 mm of monthly rainfall
169 - 10 (Very High) UV index
10 - 28°C sea temperature
28
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Recommended for Georgia
The August weather guide for Georgia (USA) (St Simons Island) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C / mm) | Imperial (°F / inches)
More about the USA
How hot is it in St Simons Island in August?
Daytime temperatures usually reach 31°C in St Simons Island in August with very high heat and humidity, falling to 23°C at night.
How sunny is it in St Simons Island in August?
There are normally 8 hours of bright sunshine each day in St Simons Island in August - that's 63% of daylight hours.
How warm is the sea around St Simons Island in August?
The average sea temperature around St Simons Island in August is 28°C.
Does it rain in St Simons Island in August?
There are usually 14 days with some rain in St Simons Island in August and the average monthly rainfall is 169mm.
What is the chance of a hurricane in St Simons Island in August?
On average 1 day in August in St Simons Island is likely to be affected by the passage of one or more tropical storms.
St Simons Island August sunrise & sunset times
Browse the sunrise and sunset times for St Simons Island in August 2026. Select a month to view St Simons Island sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Saturday, 1st August 2026 | 05:43 | 19:21 |
| Sunday, 16th August 2026 | 05:52 | 19:07 |
| Monday, 31st August 2026 | 06:01 | 18:50 |
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