St Simons Island weather in May 2025

Expect 82°F daytime maximum temperatures in the shade with on average 10 hours of sunshine per day in St Simons Island in May. Check more long-term weather averages for St Simons Island in May before you book your next holiday to Georgia (USA) in 2025/2026.

  • 82°F maximum daytime temperature in May in St Simons Island82
    82°F max day temperature
  • 10 hours of sunshine per day
  • 8 days with some rainfall in May in St Simons Island8
    8 days with some rainfall
  • 64°F minimum night-time temperature in May in St Simons Island64
    64°F min night temperature
  • 14 hours of daylight per day in May in St Simons Island14
    14 hours of daylight per day
  • Moderate heat & humidity in May in St Simons IslandM
    Moderate heat & humidity
  • 3.5 inches monthly rainfall in May in St Simons Island3.5
    3.5 inches of monthly rainfall
  • UV (maximum) index 10 (Very High) in May in St Simons Island10
    10 (Very High) UV index
  • 73°F sea temperature in May in St Simons Island73
    73°F sea temperature

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The May 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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How hot is it in St Simons Island in May?

Daytime temperatures usually reach 82°F in St Simons Island in May with moderate heat and humidity, falling to 64°F at night.

How sunny is it in St Simons Island in May?

There are normally 10 hours of bright sunshine each day in St Simons Island in May - that's 70% of daylight hours.

How warm is the sea around St Simons Island in May?

The average sea temperature around St Simons Island in May is 73°F.

Does it rain in St Simons Island in May?

There are usually 8 days with some rain in St Simons Island in May and the average monthly rainfall is 3.5 inches.

St Simons Island May sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 05:41 19:05
Friday, 16th May 2025 05:29 19:15
Saturday, 31st May 2025 05:22 19:24

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