Measurements:
°C
°F
Wilmington Island
86°F
N 18 mph
Feels like: 96°F
Precip: 20%
World Resorts USA Wilmington Island Weather

Wilmington Island Sea Water Temperature

Current Sea Water Temperature:
+90.2°F
Maximum Sea Water Temperature in August: 91.8°F
Minimum Sea Water Temperature in August: 84.6°F
Average water temperature in August: 88.8°F

Sea Water Temperature for the Last 10 Days:

August 25 90.2°F August 20 91.0°F
August 24 90.4°F August 19 90.4°F
August 23 91.4°F August 18 89.4°F
August 22 91.6°F August 17 89.2°F
August 21 91.4°F August 16 89.0°F

When is the Warmest Sea for Wilmington Island?

According to our data for the last three years for Wilmington 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: 2026 2025 2024

The average sea surface temperature in August 2026 for Wilmington Island was 89.9°F. The maximum and minimum values were 88.8°F and 91.6°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Wilmington Island was 90.3°F. The maximum and minimum values were 88.4°F and 91.8°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Wilmington Island was 83.1°F. The maximum and minimum values were 81.0°F and 84.8°F respectively.

Best Time to Visit Wilmington Island
The most sunny months:
October 16 days
April 16 days
November 15 days
The most warm months:
July 92.1 °F
August 89.6 °F
June 88.8 °F
Warmest sea temperature:
July 88.8 °F
August 88.8 °F
September 84.9 °F
The most cold months:
January 56.4 °F
December 59.9 °F
February 60.4 °F
The most rainy months:
August 6 days
February 3 days
July 3 days
The most windy months:
February 8 mph
January 8 mph
December 8 mph

Wilmington Island on the Weather Map

USA Resorts:
NAME
Boston +80
Chicago +80
Hawaii +84
Houston +106
Las Vegas +116
Los Angeles +96
Maui +70
Miami +92
Myrtle Beach +84
New York +82
San Diego +96
San Francisco +64
Santa Monica +86
Sarasota +92
Washington +84
24 Hours Weather Forecast
Wilmington Island
Local time: 17:37
25 aug, tuesday
1800 86°F
N
18 mph
2100 88°F
E
7 mph
26 aug, wednesday
0000 88°F
NE
9 mph
0300 84°F
N
9 mph
0600 84°F
E
11 mph
0900 82°F
NE
8 mph
1200 86°F
N
7 mph
1500 86°F
N
15 mph