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St. Simons Island Weather

St. Simons Island 14 Days Forecast

21.07
tue

Day

93°F

N 15 mph

Precip.
6%

Night

82°F

NE 9 mph

Precip.
19%

22.07
wed

Day

91°F

N 11 mph

Precip.
2%

Night

82°F

N 11 mph

Precip.
24%

23.07
thu

Day

91°F

NE 4 mph

Precip.
2%

Night

84°F

N 12 mph

Precip.
39%

24.07
fri

Day

86°F

E 6 mph

Precip.
40%

Night

79°F

NE 7 mph

Precip.
41%

25.07
sat

Day

84°F

E 6 mph

Precip.
10%

Night

75°F

SE 3 mph

Precip.
23%

26.07
sun

Day

77°F

E 5 mph

Precip.
56%

Night

77°F

E 8 mph

Precip.
55%

27.07
mon

Day

86°F

E 9 mph

Precip.
23%

Night

81°F

NE 11 mph

Precip.
10%

28.07
tue

Day

91°F

NE 11 mph

Precip.
4%

Night

81°F

NE 11 mph

Precip.
75%

29.07
wed

Day

79°F

NE 13 mph

Precip.
39%

Night

77°F

N 8 mph

Precip.
13%

30.07
thu

Day

88°F

NE 7 mph

Precip.
17%

Night

77°F

N 10 mph

Precip.
15%

31.07
fri

Day

88°F

NE 4 mph

Precip.
5%

Night

79°F

N 9 mph

Precip.
42%

01.08
sat

Day

86°F

NW 6 mph

Precip.
4%

Night

81°F

NW 9 mph

Precip.
10%

02.08
sun

Day

86°F

W 8 mph

Precip.
7%

Night

81°F

W 8 mph

Precip.
13%

03.08
mon

Day

88°F

W 9 mph

Precip.
20%

Night

82°F

NW 8 mph

Precip.
10%

sea water
temperature

St. Simons Island

monthly
weather

St. Simons Island

current
weather

St. Simons Island

7 days
forecast

St. Simons Island

January
February
March
April

May
June
July
August

September
October
November
December

Show year:

2026

2025

2024

The average sea water temperature in July of 2026 was 85.8°F. The highest and lowest sea temperatures during the month were 86.9°F and 84.2°F.

Show year:

2025

2024

2023

The average sea water temperature in August of 2025 was 85.7°F. The highest and lowest sea temperatures during the month were 87.6°F and 83.5°F.