Measurements:
°C
°F
Kiawah Island
56°F
NE 3 mph
Feels like: 56°F
Precip: 61%
World Resorts USA Kiawah Island Weather

Kiawah Island Sea Water Temperature

Current Sea Water Temperature:
+61.8°F
Maximum Sea Water Temperature in December: 67.4°F
Minimum Sea Water Temperature in December: 47.0°F
Average water temperature in December: 58.6°F

Sea Water Temperature for the Last 10 Days:

December 04 61.8°F November 29 64.2°F
December 03 61.4°F November 28 64.8°F
December 02 60.8°F November 27 64.8°F
December 01 61.2°F November 26 65.6°F
November 30 62.2°F November 25 64.6°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
November 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 56.8 °F
December 60.5 °F
February 61.8 °F
The most rainy months:
July 5 days
August 5 days
June 4 days
The most windy months:
March 9 mph
December 8 mph
January 8 mph

Kiawah Island on the Weather Map

USA Resorts:
NAME
Chicago 0
Hawaii +78
Honolulu +78
Houston +46
Las Vegas +44
Los Angeles +56
Maui +72
Miami +72
Miami Beach +80
New York +20
San Diego +58
San Francisco +48
Sarasota +64
Tampa +64
Washington +28
24 Hours Weather Forecast
Kiawah Island
Local time: 00:59
05 dec, friday
0300 58°F
N
5 mph
0600 54°F
SW
5 mph
0900 56°F
SW
9 mph
1200 54°F
SW
7 mph
1500 52°F
S
9 mph
1800 50°F
SE
7 mph
2100 48°F
SE
4 mph
06 dec, saturday
0000 48°F
SE
6 mph