Climate and monthly weather forecast
Saint Simons Island, GA

A long pier with a large shed on the St. Simons Island, Georgia, the rocks and seawater and colorful sunset clouds in the sky above
A long pier with a large shed on the St. Simons Island, Georgia, the rocks and seawater and colorful sunset clouds in the sky above

Weather in January

January, like December, is a moderate winter month in Saint Simons Island, Georgia, with temperature in the range of an average high of 60.4°F (15.8°C) and an average low of 47.7°F (8.7°C). The coldest month is January, with an average high-temperature of 60.4°F (15.8°C) and an average low-temperature of 47.7°F (8.7°C). Weather in January »

Weather in February

February, the last month of the winter in Saint Simons Island, is a comfortable month, with temperature in the range of an average high of 63.3°F (17.4°C) and an average low of 51.1°F (10.6°C). In Saint Simons Island, the average high-temperature in February is almost the same as in January - an enjoyable 63.3°F (17.4°C). Weather in February »

Weather in March

March, the first month of the spring in Saint Simons Island, is an agreeable month, with an average temperature ranging between min 55.8°F (13.2°C) and max 68.5°F (20.3°C). In Saint Simons Island, the average high-temperature in March is almost the same as in February - a pleasant 68.5°F (20.3°C). Weather in March »

Weather in April

April is a moderately hot spring month in Saint Simons Island, Georgia, with an average temperature ranging between min 62.4°F (16.9°C) and max 75°F (23.9°C). In Saint Simons Island, the average high-temperature in April slightly increases from a pleasant 68.5°F (20.3°C) in March to a moderately hot 75°F (23.9°C). Weather in April »

Weather in May

The last month of the spring, May, is another warm month in Saint Simons Island, Georgia, with an average temperature fluctuating between 69.1°F (20.6°C) and 81.1°F (27.3°C). In Saint Simons Island, Georgia, the average high-temperature in May marginally rises from a warm 75°F (23.9°C) in April to a still moderately hot 81.1°F (27.3°C). Weather in May »

Weather in June

The first month of the summer, June, is a tropical month in Saint Simons Island, Georgia, with an average temperature ranging between max 86.5°F (30.3°C) and min 74.8°F (23.8°C). In Saint Simons Island, Georgia, the average high-temperature in June marginally rises from a warm 81.1°F (27.3°C) in May to a hot 86.5°F (30.3°C). Weather in June »

Weather in July

July, the same as June, in Saint Simons Island, Georgia, is a hot summer month, with temperature in the range of an average high of 88.7°F (31.5°C) and an average low of 77°F (25°C). With an average high-temperature of 88.7°F (31.5°C) and an average low-temperature of 77°F (25°C), July is the warmest month. In July, the average heat index is evaluated at an extremely hot 105.8°F (41°C). Weather in July »

Weather in August

The last month of the summer, August, is another hot month in Saint Simons Island, Georgia, with an average temperature ranging between max 88.3°F (31.3°C) and min 77.4°F (25.2°C). In August, the average high-temperature is relatively the same as in July - a still tropical 88.3°F (31.3°C). Weather in August »

Weather in September

September, the first month of the autumn in Saint Simons Island, is also a moderately hot month, with an average temperature fluctuating between 74.3°F (23.5°C) and 84.9°F (29.4°C). In Saint Simons Island, the average high-temperature in September is almost the same as in August - a moderately hot 84.9°F (29.4°C). Weather in September »

Weather in October

October, like September, in Saint Simons Island, Georgia, is a moderately hot autumn month, with an average temperature fluctuating between 66.6°F (19.2°C) and 77.9°F (25.5°C). In Saint Simons Island, Georgia, the average high-temperature in October slightly decreases from a moderately hot 84.9°F (29.4°C) in September to a still warm 77.9°F (25.5°C). Weather in October »

Weather in November

The last month of the autumn, November, is also an agreeable month in Saint Simons Island, Georgia, with an average temperature varying between 57.6°F (14.2°C) and 68.9°F (20.5°C). In November, the average high-temperature decreases from a moderately hot 77.9°F (25.5°C) in October to an agreeable 68.9°F (20.5°C). Weather in November »

Weather in December

December, the first month of the winter in Saint Simons Island, is also an enjoyable month, with an average temperature ranging between min 52.9°F (11.6°C) and max 64.4°F (18°C). In December, the average high-temperature is essentially the same as in November - a comfortable 64.4°F (18°C). Weather in December »
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FAQ

What is the coldest month in Saint Simons Island?

January is the coldest month in Saint Simons Island, with an average high-temperature of 60.4°F (15.8°C) and an average low-temperature of 47.7°F (8.7°C).

What is the driest month in Saint Simons Island?

The month with the least rainfall in Saint Simons Island, Georgia, is January, when the rain falls for 8.2 days and typically collects 0.59" (15mm) of precipitation.

How many days does it rain in Saint Simons Island?

In Saint Simons Island, during the entire year, the rain falls for 163.3 days and collects up to 20.43" (519mm) of precipitation.

When it does not snow in Saint Simons Island?

In Saint Simons Island, Georgia, snow does not fall in January, March through November.

How many days does it snow in Saint Simons Island?

In Saint Simons Island, during the entire year, snow falls for 0.2 days.

What is the month with the lowest UV index in Saint Simons Island?

January is the month with the lowest UV index in Saint Simons Island, with an average maximum UV index of 3.

When does it snow in Saint Simons Island?

February and December are months with snowfall.

When does it snow the most in Saint Simons Island?

The months with the most snowfall days are February and December, with an average of 0.1 snowfall days.

When is the ocean coldest in Saint Simons Island?

With an average ocean temperature of 58.6°F (14.8°C), February is the month with the coldest seawater in Saint Simons Island, Georgia.

What is the least humid month in Saint Simons Island?

March is the least humid month, with an average relative humidity of 72%.

When is Daylight Saving Time (DST) in Saint Simons Island?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts in Saint Simons Island, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 6. 2022, at 2:00 am, and the time zone reverts from EDT to EST.

When is the highest UV index in Saint Simons Island?

May through September, with an average maximum UV index of 7, are months with the highest UV index.

When are the longest days in Saint Simons Island?

The month with the longest days in Saint Simons Island, Georgia, is June, with an average of 14h and 8min of daylight.

What is the warmest month in Saint Simons Island?

The warmest month in Saint Simons Island, Georgia, is July, with an average high-temperature of 88.7°F (31.5°C) and an average low-temperature of 77°F (25°C).

What month has the most sunshine in Saint Simons Island?

July has the most sunshine of the year in Saint Simons Island, with an average of 11h of sunshine.

What is the most humid month in Saint Simons Island?

August and December, with an average relative humidity of 78%, are most humid months in Saint Simons Island.

What is the rainiest month in Saint Simons Island?

August is the month with the most rainfall in Saint Simons Island. Rain falls for 23.3 days and accumulates 3.43" (87mm) of precipitation.

When is the ocean warmest in Saint Simons Island?

The month with the warmest seawater in Saint Simons Island is August, with an average ocean temperature of 83.5°F (28.6°C).

What is the month with the shortest days in Saint Simons Island?

The month with the shortest days in Saint Simons Island, Georgia, is December, with an average of 10h and 10min of daylight.

What is the month with the least sunshine in Saint Simons Island?

The month with the least sunshine in Saint Simons Island is December, with an average of 5.8h of sunshine.

Average temperature
Saint Simons Island, GA

Average temperature - Saint Simons Island, GA

The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (60.4°F).

The month with the highest average low temperature is August (77.4°F).
The coldest month (with the lowest average low temperature) is January (47.7°F).

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Average pressure
Saint Simons Island, GA

Average pressure - Saint Simons Island, GA

The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.98"Hg).

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Average wind speed
Saint Simons Island, GA

Average wind speed - Saint Simons Island, GA

The windiest months (with the highest average wind speed) are January and April (8.8mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).

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Average humidity
Saint Simons Island, GA

Average humidity - Saint Simons Island, GA

The months with the highest relative humidity are August and December (78%).
The month with the lowest relative humidity is March (72%).

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Average rainfall
Saint Simons Island, GA

Average rainfall - Saint Simons Island, GA

The wettest month (with the highest rainfall) is August (3.43").
The driest month (with the least rainfall) is January (0.59").

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Average rainfall days
Saint Simons Island, GA

Average rainfall days - Saint Simons Island, GA

The month with the highest number of rainy days is August (23.3 days).
The month with the least rainy days is January (8.2 days).

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Average snowfall days
Saint Simons Island, GA

Average snowfall days - Saint Simons Island, GA

The months with the highest number of snowfall days are February and December (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October and November (0 days).

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Average sea temperature
Saint Simons Island, GA

Average sea temperature - Saint Simons Island, GA

The best month for swimming (with the highest average sea temperature) is August (83.4°F).
The coldest month (with the lowest average sea temperature) is February (58.5°F).

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Average daylight / Average sunshine
Saint Simons Island, GA

Average daylight / Average sunshine - Saint Simons Island, GA

The month with the longest days is June (Average daylight: 14h and 8min).
The month with the shortest days is December (Average daylight: 10h and 10min).

The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

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Average sunshine days
Saint Simons Island, GA

Average sunshine days - Saint Simons Island, GA

The month with the most sunshine days is March (20.1 days).
The month with the least sunshine days is August (4.2 days).

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Average UV index
Saint Simons Island, GA

Average UV index - Saint Simons Island, GA

The months with the highest UV index are May, June, July, August and September (UV index 7).
The month with the lowest UV index is January (UV index 3).

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Average cloud cover
Saint Simons Island, GA

Average cloud cover - Saint Simons Island, GA

The months with the most cloud cover are February and December (Cloud cover 38).
The months with the least cloud cover are April, May, June and July (Cloud cover 27).

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Average visibility
Saint Simons Island, GA

Average visibility - Saint Simons Island, GA

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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