St Simons Island weather in August 2025

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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St Simons Island by month

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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)

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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.

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