St Simons Island weather live forecast

Today's maximum temperature in St Simons Island is expected to be 32°C. Select a day from the live weather forecast for St Simons Island, Georgia, USA for more weather parameters.

5-day weather forecast updated at 04:03 on Saturday 16th August 2025 GMT

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The 5-day weather forecast for Georgia (USA) (St Simons Island) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

St Simons Island weather forecast by day

Below are the detailed weather forecasts for St Simons Island for the next 5 days.

St Simons Island weather for Saturday 16th August 2025

Expect isolated thunderstorms in St Simons Island, Georgia (USA) with a maximum temperature of 32°C, high levels of heat & humidity, maximum UV of 9 (Very High) and 8 hours of bright sunshine. There are 2-5 mm of rainfall expected with 68% chance of some rain and a light breeze of 12 kph from the east.

  • 32°C maximum temperature32
    °C maximum temperature
  • 27°C minimum temperature27
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 9 (Very High)9
    UV index (Very High)
  • 68% chance of some rain68
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • High heat & humidityH
    high heat & humidity
  • Light breeze of 12 kph from the East12
    kph wind from E

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St Simons Island weather for Sunday 17th August 2025

Expect isolated thunderstorms in St Simons Island, Georgia (USA) with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 78% chance of some rain and a gentle breeze of 16 kph from the north-east.

  • 31°C maximum temperature31
    °C maximum temperature
  • 26°C minimum temperature26
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 78% chance of some rain78
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Gentle breeze of 16 kph from the North-East16
    kph wind from NE

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St Simons Island weather for Monday 18th August 2025

Expect isolated thunderstorms in St Simons Island, Georgia (USA) with a maximum temperature of 33°C, high levels of heat & humidity, maximum UV of 10 (Very High) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 9% chance of some rain and a gentle breeze of 17 kph from the east.

  • 33°C maximum temperature33
    °C maximum temperature
  • 25°C minimum temperature25
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 10 (Very High)10
    UV index (Very High)
  • 9% chance of some rain9
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • High heat & humidityH
    high heat & humidity
  • Gentle breeze of 17 kph from the East17
    kph wind from E

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St Simons Island weather for Tuesday 19th August 2025

Expect broken clouds in St Simons Island, Georgia (USA) with a maximum temperature of 32°C, high levels of heat & humidity, maximum UV of 9 (Very High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 24 kph from the north-east.

  • 32°C maximum temperature32
    °C maximum temperature
  • 26°C minimum temperature26
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 9 (Very High)9
    UV index (Very High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • High heat & humidityH
    high heat & humidity
  • Moderate breeze of 24 kph from the North-East24
    kph wind from NE

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St Simons Island weather for Wednesday 20th August 2025

Expect scattered clouds in St Simons Island, Georgia (USA) with a maximum temperature of 32°C, high levels of heat & humidity, maximum UV of 9 (Very High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 19 kph from the north.

  • 32°C maximum temperature32
    °C maximum temperature
  • 25°C minimum temperature25
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 9 (Very High)9
    UV index (Very High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • High heat & humidityH
    high heat & humidity
  • Gentle breeze of 19 kph from the North19
    kph wind from N

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Metric (°C / mm)  |  Imperial (°F / inches)

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