October weather forecast
Saint Simons Island, GA

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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 October

October on Saint Simons Island witnesses a steady decline in temperatures, introducing the livable conditions of fall. The difference in climate becomes evident when compared to September, alongside diminishing rainfall and shorter sunlight hours. A visible shift of the Island's weather is experienced, presenting a significant reduction in sea temperature. The sea temperature in October drops impressively to 78.3°F (25.7°C), a steep decline of 4.1°F (-15.5°C) from September. October provides an enriching experience for leisurely walks on the beach and exploration of the historical sites without the high summer crowds or intense heat.

Temperature

As Saint Simons Island enters October, the average high-temperature subtly lowers from the 84.9°F (29.4°C) of September to a still warm 77.9°F (25.5°C). October nights experience a consistent temperature drop to a refreshing 66.6°F (19.2°C).

Humidity

The average relative humidity in October in Saint Simons Island is 74%.

Rainfall

In October, in Saint Simons Island, the rain falls for 11.5 days. Throughout October, 1.61" (41mm) of precipitation is accumulated. Throughout the year, there are 163.3 rainfall days, and 20.43" (519mm) of precipitation is accumulated.

Snowfall

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

Ocean temperature

In Saint Simons Island, in October, the average water temperature is 78.4°F (25.8°C).
Note: For any water activity, the surface water temperatures in the range of 77°F (25°C) to 84.2°F (29°C) are deemed excellent and incredibly pleasant for longer durations.

Daylight

In Saint Simons Island, the average length of the day in October is 11h and 24min.
On the first day of the month, sunrise is at 7:19 am and sunset at 7:10 pm. On the last day of October, sunrise is at 7:40 am and sunset at 6:37 pm EDT.

Sunshine

In October, the average sunshine in Saint Simons Island is 7.1h.

UV index

In Saint Simons Island, the average daily maximum UV index in October is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The maximum UV index of 5 during October translates into these guidelines:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Caution! Sand and water surfaces escalate the UV intensity from the Sun.
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Frequently asked questions

What is the average October temperature in Saint Simons Island?

The high-temperature, in October, in Saint Simons Island, is 77.9°F (25.5°C), while the low-temperature averages to 66.6°F (19.2°C). In September, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 95°F (35°C).

What is the average humidity in October in Saint Simons Island?

The average relative humidity in October in Saint Simons Island, Georgia, is 74%.

How much does it rain in Saint Simons Island in October?

In Saint Simons Island, during October, the rain falls for 11.5 days and regularly aggregates up to 1.61" (41mm) of precipitation.

When it does not snow in Saint Simons Island?

January, March through November are months without snowfall in Saint Simons Island, Georgia.

How warm is the water in October in Saint Simons Island?

In Saint Simons Island, in October, the average water temperature is 78.4°F (25.8°C). Water temperature between 77°F (25°C) and 84.2°F (29°C) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

What is the average length of the day in October in Saint Simons Island?

In October, the average day length is 11h and 24min.

What time are sunrise and sunset in October in Saint Simons Island?

In October, on the first day of the month, sunrise is at 7:19 am and sunset at 7:10 pm. On the last day of the month, in Saint Simons Island, sunrise is at 7:40 am and sunset at 6:37 pm EDT.

How long on average sun shines in October in Saint Simons Island?

In Saint Simons Island, the average sunshine duration in October is 7.1h.

What is the UV index intensity in October in Saint Simons Island?

The average daily maximum UV index in October in Saint Simons Island, Georgia, is 5. A UV Index reading of 3 to 5 represents a moderate health threat from exposure to the Sun's UV radiation.
Today
Tomorrow
Long-term
YearJFMAMJJASOctoberND
Sep
October
Nov
Average high temperature
84.9°F 29.4°C
77.9°F 25.5°C
68.9°F 20.5°C
Average low temperature
74.3°F 23.5°C
66.6°F 19.2°C
57.6°F 14.2°C
Average pressure
29.98" 761mmHg
30.01" 762mmHg
30.11" 765mmHg
Average wind speed
7.6mph 12.2km/h
8.6mph 13.8km/h
8.7mph 14km/h
Average max. wind speed
8mph 12.9km/h
9.3mph 15km/h
9.3mph 15km/h
Average wind speed gusts
11.6mph 18.7km/h
13.2mph 21.2km/h
13.5mph 21.7km/h
Average humidity
77%
74%
74%
Average rainfall
2.8" 71mm
1.61" 41mm
1.02" 26mm
Average rainfall days
19.2
11.5
8.6
Average snowfall days
0
0
0
Average sea temperature
82.4°F 28°C
78.3°F 25.7°C
70.4°F 21.3°C
Average daylight
12h 2min
11h 2min
10h 4min
Average sunshine
8h 4min
7h 1min
6h 1min
Average sunshine days
7.4
17
17.8
Average UV index
7
5
5
Average cloud cover
30%
28%
33%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in October
Saint Simons Island, GA

Average temperature in October - Saint Simons Island, GA
  • Average high temperature in October: 77.9°F

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).

  • Average low temperature in October: 66.6°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 in October
Saint Simons Island, GA

Average pressure in October - Saint Simons Island, GA
  • Average pressure in October: 30.01"Hg

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 in October
Saint Simons Island, GA

Average wind speed in October - Saint Simons Island, GA
  • Average wind speed in October: 8.6mph

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 in October
Saint Simons Island, GA

Average humidity in October - Saint Simons Island, GA
  • Average humidity in October: 74%

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 in October
Saint Simons Island, GA

Average rainfall in October - Saint Simons Island, GA
  • Average rainfall in October: 1.61"

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 in October
Saint Simons Island, GA

Average rainfall days in October - Saint Simons Island, GA
  • Average rainfall days in October: 11.5 days

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 in October
Saint Simons Island, GA

Average snowfall days in October - Saint Simons Island, GA
  • Average snowfall days in October: 0 days

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 in October
Saint Simons Island, GA

Average sea temperature in October - Saint Simons Island, GA
  • Average sea temperature in October: 78.3°F

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 in October /
Average sunshine in October
Saint Simons Island, GA

Average daylight in October / Average sunshine in October - Saint Simons Island, GA
  • Average daylight in October: 11h and 2min

The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).

  • Average sunshine in October: 7h and 1min

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 in October
Saint Simons Island, GA

Average sunshine days in October - Saint Simons Island, GA
  • Average sunshine days in October: 17 days

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 in October
Saint Simons Island, GA

Average UV index in October - Saint Simons Island, GA
  • Average UV index in October: 5

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 in October
Saint Simons Island, GA

Average cloud cover in October - Saint Simons Island, GA
  • Average cloud cover in October: 28

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 in October
Saint Simons Island, GA

Average visibility in October - Saint Simons Island, GA
  • Average visibility in October: 6mi

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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Saint Simons Island, Georgia, USA

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