St Simons Island weather live forecast

Today's maximum temperature in St Simons Island is expected to be 93°F. 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 Friday 15th 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 Friday 15th August 2025

Expect scattered clouds in St Simons Island, Georgia (USA) with a maximum temperature of 93°F, high levels of heat & humidity, maximum UV of 9 (Very High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 8 mph from the west.

  • 93°F maximum temperature93
    °F maximum temperature
  • 79°F minimum temperature79
    °F minimum temperature
  • Scattered clouds
    scattered clouds
  • 10 hours of bright sunshine10
    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 8 mph from the West8
    mph wind from W

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St Simons Island weather for Saturday 16th August 2025

Expect isolated thunderstorms in St Simons Island, Georgia (USA) with a maximum temperature of 90°F, high levels of heat & humidity, maximum UV of 8 (Very High) and 6 hours of bright sunshine. There are 5-10 mm of rainfall expected with 80% chance of some rain and a light breeze of 7 mph from the east.

  • 90°F maximum temperature90
    °F maximum temperature
  • 79°F minimum temperature79
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 8 (Very High)8
    UV index (Very High)
  • 80% chance of some rain80
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • High heat & humidityH
    high heat & humidity
  • Light breeze of 7 mph from the East7
    mph 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 88°F, moderate levels of heat & humidity, maximum UV of 5 (Moderate) and 6 hours of bright sunshine. There are 10-20 mm of rainfall expected with 63% chance of some rain and a gentle breeze of 11 mph from the east.

  • 88°F maximum temperature88
    °F maximum temperature
  • 79°F minimum temperature79
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 63% chance of some rain63
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Gentle breeze of 11 mph from the East11
    mph wind from E

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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 90°F, high levels of heat & humidity, maximum UV of 9 (Very High) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 38% chance of some rain and a gentle breeze of 12 mph from the north-east.

  • 90°F maximum temperature90
    °F maximum temperature
  • 77°F minimum temperature77
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 9 (Very High)9
    UV index (Very High)
  • 38% chance of some rain38
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • High heat & humidityH
    high heat & humidity
  • Gentle breeze of 12 mph from the North-East12
    mph wind from NE

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St Simons Island weather for Tuesday 19th August 2025

Expect isolated thunderstorms in St Simons Island, Georgia (USA) with a maximum temperature of 90°F, high levels of heat & humidity, maximum UV of 9 (Very High) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 38% chance of some rain and a moderate breeze of 14 mph from the north-east.

  • 90°F maximum temperature90
    °F maximum temperature
  • 79°F minimum temperature79
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 9 (Very High)9
    UV index (Very High)
  • 38% chance of some rain38
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • High heat & humidityH
    high heat & humidity
  • Moderate breeze of 14 mph from the North-East14
    mph wind from NE

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