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Saint Simons Island (GA) Climate by Month

The climate in Saint Simons Island is marked by big temperature swings throughout the year. Temperatures range from very warm during the warmest months to mild in the cooler months. It maintains moderate precipitation patterns. Let’s explore the climate details in depth to provide you with a complete overview.

Average day and night temperature

In Saint Simons Island, temperatures differ significantly between summer and winter months. Typically, daytime temperatures range from a very warm 32°C in July to a moderate 16°C in the coolest month, January. Nights are cooler, with temperatures generally dropping to 6°C, particularly during the colder months.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

On average, Saint Simons Island receives a reasonable amount of rainfall, with an annual precipitation of 999 mm. The climate in Saint Simons Island shows significant variation throughout the year. Expect high rainfall in August, with an average of 159 mm of precipitation over 15 rainy days. In contrast, November offers drier and sunnier days, with around 38 mm of rainfall over 5 rainy days.

The mean monthly precipitation over the year, including rain, hail and snow

The best time of year to visit Saint Simons Island in the United States of America

During the months of March, April, October and November you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • Which is the warmest month in Saint Simons Island?
    July has an average maximum temperature of 32°C and is the warmest month of the year.
  • Which is the coldest month in Saint Simons Island?
    The coldest month is January with an average maximum temperature of 16°C.
  • Which is the wettest month in Saint Simons Island?
    August tops the wettest month list with 159 mm of rainfall.
  • Which is the driest month in Saint Simons Island?
    November is the driest month with 38 mm of precipitation.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

    Forecast for Saint Simons Island (GA)

    Fri   Nov 22
    15°C | 6°C
    NW 22 km/h
    clear and no rain

    clear and no rain

    Sat   Nov 23
    17°C | 5°C
    NW 14 km/h
    clear and no rain

    clear and no rain

    Sun   Nov 24
    20°C | 8°C
    S 11 km/h
    clear and no rain

    clear and no rain