Measurements:
°C
°F
Kiawah Island
44°F
SW 6 mph
Feels like: 40°F
Precip: 0%
World Resorts USA Kiawah Island Weather

Kiawah Island Sea Water Temperature

Current Sea Water Temperature:
+49.6°F
Maximum Sea Water Temperature in January: 62.2°F
Minimum Sea Water Temperature in January: 43.2°F
Average water temperature in January: 54.3°F

Sea Water Temperature for the Last 10 Days:

January 29 49.6°F January 24 53.0°F
January 28 50.2°F January 23 52.4°F
January 27 51.4°F January 22 50.0°F
January 26 55.2°F January 21 50.6°F
January 25 54.2°F January 20 51.8°F

When is the Warmest Sea for Kiawah Island?

According to our data for the last three years for Kiawah Island the highest average sea water temperature was in August, July and September.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Kiawah Island was 87.9°F. The maximum and minimum values were 86.0°F and 91.2°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Kiawah Island was 88.7°F. The maximum and minimum values were 86.8°F and 91.0°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Kiawah Island was 82.5°F. The maximum and minimum values were 79.4°F and 84.8°F respectively.

Best Time to Visit Kiawah Island
The most sunny months:
October 16 days
April 15 days
January 14 days
The most warm months:
July 91.7 °F
August 89.8 °F
June 88.4 °F
Warmest sea temperature:
August 88.2 °F
July 88.2 °F
September 84.5 °F
The most cold months:
January 56.4 °F
December 60.0 °F
February 61.8 °F
The most rainy months:
July 5 days
August 5 days
June 4 days
The most windy months:
January 9 mph
March 9 mph
December 8 mph

Kiawah Island on the Weather Map

USA Resorts:
NAME
Chicago 0
Hawaii +74
Honolulu +74
Houston +38
Las Vegas +48
Los Angeles +56
Maui +68
Miami +64
Miami Beach +70
New York +12
San Diego +60
San Francisco +50
Sarasota +58
Tampa +58
Washington +12
24 Hours Weather Forecast
Kiawah Island
Local time: 10:55
29 jan, thursday
1200 44°F
SW
6 mph
1500 50°F
W
4 mph
1800 46°F
W
6 mph
2100 42°F
W
7 mph
30 jan, friday
0000 42°F
W
6 mph
0300 40°F
W
6 mph
0600 40°F
SW
3 mph
0900 44°F
S
5 mph