Measurements:
°C
°F
Kiawah Island
74°F
NE 9 mph
Feels like: 78°F
Precip: 0%
World Resorts USA Kiawah Island Weather

Kiawah Island Sea Water Temperature

Current Sea Water Temperature:
+71.4°F
Maximum Sea Water Temperature in April: 76.0°F
Minimum Sea Water Temperature in April: 61.4°F
Average water temperature in April: 69.3°F

Sea Water Temperature for the Last 10 Days:

April 23 71.4°F April 18 71.6°F
April 22 70.6°F April 17 71.0°F
April 21 71.2°F April 16 69.8°F
April 20 71.6°F April 15 69.0°F
April 19 72.2°F April 14 68.0°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 56.3 °F
December 60.0 °F
February 60.7 °F
The most rainy months:
July 5 days
August 5 days
June 4 days
The most windy months:
March 9 mph
February 9 mph
January 9 mph

Kiawah Island on the Weather Map

USA Resorts:
NAME
Chicago +70
Hawaii +76
Honolulu +76
Houston +82
Las Vegas +68
Los Angeles +64
Maui +70
Miami +82
Miami Beach +82
New York +76
San Diego +66
San Francisco +58
Sarasota +88
Tampa +86
Washington +82
24 Hours Weather Forecast
Kiawah Island
Local time: 12:12
23 apr, thursday
1500 76°F
N
15 mph
1800 76°F
N
16 mph
2100 70°F
NE
12 mph
24 apr, friday
0000 68°F
NE
12 mph
0300 68°F
NE
11 mph
0600 66°F
NE
9 mph
0900 70°F
NE
10 mph
1200 76°F
NE
11 mph