St Simons Island weather live forecast

Tomorrow's maximum temperature in St Simons Island is expected to be 31°C.

5-day weather forecast updated at 04:03 on Sunday 15th June 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 Sunday 15th June 2025

Expect isolated thunderstorms in St Simons Island, Georgia (USA) with a maximum temperature of 31°C, high levels of heat & humidity, maximum UV of 8 (Very High) and 7 hours of bright sunshine. There are 10-20 mm of rainfall expected with 60% chance of some rain and a gentle breeze of 16 kph from the south.

  • 31°C maximum temperature31
    °C maximum temperature
  • 24°C minimum temperature24
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 8 (Very High)8
    UV index (Very High)
  • 60% chance of some rain60
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Gentle breeze of 16 kph from the South16
    kph wind from S

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St Simons Island weather for Monday 16th June 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 9 (Very High) and 7 hours of bright sunshine. There are 5-10 mm of rainfall expected with 54% chance of some rain and a gentle breeze of 15 kph from the south.

  • 31°C maximum temperature31
    °C maximum temperature
  • 25°C minimum temperature25
    °C 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)
  • 54% chance of some rain54
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Gentle breeze of 15 kph from the South15
    kph wind from S

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St Simons Island weather for Tuesday 17th June 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 9 hours of bright sunshine. There are 0-2 mm of rainfall expected with 45% chance of some rain and a gentle breeze of 19 kph from the south.

  • 32°C maximum temperature32
    °C maximum temperature
  • 25°C minimum temperature25
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 9 hours of bright sunshine9
    hours of sunshine
  • UV (maximum) index 9 (Very High)9
    UV index (Very High)
  • 45% chance of some rain45
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • High heat & humidityH
    high heat & humidity
  • Gentle breeze of 19 kph from the South19
    kph wind from S

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St Simons Island weather for Wednesday 18th June 2025

Expect scattered clouds 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 12 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 21 kph from the south.

  • 33°C maximum temperature33
    °C maximum temperature
  • 26°C minimum temperature26
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 12 hours of bright sunshine12
    hours of sunshine
  • UV (maximum) index 10 (Very High)10
    UV index (Very High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • High heat & humidityH
    high heat & humidity
  • Moderate breeze of 21 kph from the South21
    kph wind from S

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St Simons Island weather for Thursday 19th June 2025

Expect scattered clouds 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 11 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 18 kph from the south.

  • 33°C maximum temperature33
    °C maximum temperature
  • 26°C minimum temperature26
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 11 hours of bright sunshine11
    hours of sunshine
  • UV (maximum) index 10 (Very High)10
    UV index (Very High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • High heat & humidityH
    high heat & humidity
  • Gentle breeze of 18 kph from the South18
    kph wind from S

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

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