Measurements:
°C
°F
Dauphin Island
86°F
S 9 mph
Feels like: 94°F
Precip: 15%
World Resorts USA Dauphin Island Weather

Dauphin Island Sea Water Temperature

Current Sea Water Temperature:
+90.8°F
Maximum Sea Water Temperature in September: 91.2°F
Minimum Sea Water Temperature in September: 79.2°F
Average water temperature in September: 87.7°F

Sea Water Temperature for the Last 10 Days:

September 15 90.8°F September 10 90.4°F
September 14 90.4°F September 09 90.8°F
September 13 90.2°F September 08 91.2°F
September 12 90.4°F September 07 91.0°F
September 11 90.4°F September 06 90.8°F

When is the Warmest Sea for Dauphin Island?

According to our data for the last three years for Dauphin 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 Dauphin Island was 91.3°F. The maximum and minimum values were 89.0°F and 92.8°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Dauphin Island was 90.4°F. The maximum and minimum values were 87.4°F and 93.4°F respectively.

Sea Water Temperature in September

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Dauphin Island was 90.5°F. The maximum and minimum values were 89.4°F and 91.2°F respectively.

Best Time to Visit Dauphin Island
The most sunny months:
October 20 days
September 15 days
November 15 days
The most warm months:
August 90.2 °F
July 89.9 °F
June 88.1 °F
Warmest sea temperature:
August 90.9 °F
July 90.1 °F
September 87.5 °F
The most cold months:
January 56.8 °F
February 60.6 °F
December 60.6 °F
The most rainy months:
August 5 days
July 5 days
September 4 days
The most windy months:
January 12 mph
March 11 mph
February 11 mph

Dauphin Island on the Weather Map

USA Resorts:
NAME
Boston +64
Chicago +66
Hawaii +80
Las Vegas +80
Los Angeles +74
Maui +66
Miami +92
Myrtle Beach +88
New York +72
Panama City Beach +90
San Diego +72
San Francisco +60
Santa Monica +72
Sarasota +94
Washington +76
24 Hours Weather Forecast
Dauphin Island
Local time: 10:14
15 sep, tuesday
1200 88°F
W
5 mph
1500 90°F
NW
7 mph
1800 90°F
NW
8 mph
2100 90°F
NW
9 mph
16 sep, wednesday
0000 90°F
NW
6 mph
0300 88°F
W
12 mph
0600 86°F
W
15 mph
0900 86°F
W
19 mph