Saint Simons Island
Georgia, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
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
January, like December, is another mild winter month in Saint Simons Island, Georgia, with average temperature fluctuating between 60.4°F (15.8°C) and 47.7°F (8.7°C). With an average high-temperature of 60.4°F (15.8°C) and an average low-temperature of 47.7°F (8.7°C), January is the coldest month. Weather in January »

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

The first month of the spring, March, is an agreeable month in Saint Simons Island, Georgia, with average temperature fluctuating between 68.5°F (20.3°C) and 55.8°F (13.2°C). In Saint Simons Island, the average high-temperature is relatively the same as in February - an agreeable 68.5°F (20.3°C). Weather in March »

April in Saint Simons Island, Georgia, is a moderately hot spring month, with temperature in the range of an average low of 62.4°F (16.9°C) and an average high of 75°F (23.9°C). In April, the average high-temperature marginally rises, from a pleasant 68.5°F (20.3°C) in March, to a warm 75°F (23.9°C). Weather in April »

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

The first month of the summer, June, is a tropical month in Saint Simons Island, Georgia, with average temperature fluctuating between 86.5°F (30.3°C) and 74.8°F (23.8°C). In Saint Simons Island, the average high-temperature slightly increases, from a moderately hot 81.1°F (27.3°C) in May, to a tropical 86.5°F (30.3°C). Weather in June »

July, the same as June, in Saint Simons Island, Georgia, is a hot summer month, with average temperature ranging between min 77°F (25°C) and max 88.7°F (31.5°C). July is the warmest month, with an average high-temperature of 88.7°F (31.5°C) and an average low-temperature of 77°F (25°C). In July, the average heat index is calculated to a scorching 106°F (41.1°C). Weather in July »

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

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

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

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

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

What 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), January is the coldest month in Saint Simons Island, Georgia.

How many days does it rain in Saint Simons Island?

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

What is the driest month in Saint Simons Island?

January is the month with the least rainfall. Rain falls for 8.2 days and accumulates 0.59" (15mm) of precipitation.

How many days does it snow in Saint Simons Island?

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

When it does not snow in Saint Simons Island?

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

When is the lowest UV index in Saint Simons Island?

With an average maximum UV index of 3, January is the month with the lowest UV index.

When does it snow in Saint Simons Island?

February and December are months with snowfall.

What is the snowiest month in Saint Simons Island?

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

What is the month with the coldest ocean in Saint Simons Island?

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

What is the least humid month in Saint Simons Island?

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

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

Months with the highest UV index in Saint Simons Island, Georgia, are May through September, with an average maximum UV index of 7.

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 14.2h of daylight.

What is the warmest month in Saint Simons Island?

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 Saint Simons Island, Georgia.

What month has the most sunshine in Saint Simons Island?

July has the most sunshine of the year, with an average of 11h of sunshine.

What are the most humid months in Saint Simons Island?

Months with the highest humidity are August and December, with an average relative humidity of 78%.

What is the rainiest month in Saint Simons Island?

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

When is the ocean warmest in Saint Simons Island?

August is the month with the warmest seawater, 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 10.2h of daylight.

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

December has the least sunshine of the year, with an average of 5.8h of sunshine.
Average temperature - Saint Simons Island, GA
Average humidity - 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 lowest rainfall) is January (0.59").

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 lowest number of rainy days is January (8.2 days).

Average snowfall days - Saint Simons Island, GA

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

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).

Average daylight / Average sunshine - Saint Simons Island, GA
Average UV index - Saint Simons Island, GA