St Simons Island weather in August 2025

Q: 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.

Q: 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.

Q: How warm is the sea around St Simons Island in August?

The average sea temperature around St Simons Island in August is 28°C.

Q: 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.

Q: What is the chance of a cyclone 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.

Expect 88°F daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in St Simons Island in August. Check more long-term weather averages for St Simons Island in August before you book your next holiday to Georgia (USA) in 2025/2026.

88
88°F max day temperature
8
8 hours of sunshine per day
14
14 days with some rainfall
73
73°F min night temperature
13
13 hours of daylight per day
VH
Very High heat & humidity
6.7
6.7 inches of monthly rainfall
10
10 (Very High) UV index
82
82°F sea temperature

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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) | Imperial (°F)

More about the USA

How hot is it in St Simons Island in August?

Daytime temperatures usually reach 88°F in St Simons Island in August with very high heat and humidity, falling to 73°F 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 82°F.

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 6.7 inches.

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 2025. Select a month to view St Simons Island sunrise and sunset times for the next 12 months.

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

Date	Sunrise times	Sunset times
Friday, 1st August 2025	05:43	19:21
Saturday, 16th August 2025	05:52	19:07
Sunday, 31st August 2025	06:01	18:50

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Georgia - quick facts
Flight time^✝	9.5 hours
Time difference	UK -5 hours
Language(s)	English
Currency	US Dollar
Electricity	A + B plug (120V)
Driving side	Right
Visa^✝	Yes
Why visit?	Culture
Tourist info	Georgia Department of Economic Development