Measurements:
°C
°F
Sanibel Island
64°F
SW 10 mph
Feels like: 62°F
Precip: 0%
World Resorts USA Sanibel Island Weather

Sanibel Island Sea Water Temperature

Current Sea Water Temperature:
+64.8°F
Maximum Sea Water Temperature in January: 77.4°F
Minimum Sea Water Temperature in January: 59.4°F
Average water temperature in January: 68.6°F

Sea Water Temperature for the Last 10 Days:

January 29 64.8°F January 24 64.8°F
January 28 67.4°F January 23 63.8°F
January 27 68.8°F January 22 63.6°F
January 26 67.8°F January 21 64.4°F
January 25 65.6°F January 20 66.6°F

When is the Warmest Sea for Sanibel Island?

According to our data for the last three years for Sanibel 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 Sanibel Island was 93.2°F. The maximum and minimum values were 91.4°F and 94.4°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Sanibel Island was 91.0°F. The maximum and minimum values were 89.2°F and 93.6°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Sanibel Island was 89.6°F. The maximum and minimum values were 87.6°F and 91.8°F respectively.

Best Time to Visit Sanibel Island
The most sunny months:
March 19 days
December 17 days
April 17 days
The most warm months:
August 92.2 °F
July 92.2 °F
September 90.7 °F
Warmest sea temperature:
August 91.8 °F
July 91.4 °F
September 90.3 °F
The most cold months:
January 71.4 °F
December 74.5 °F
February 75.8 °F
The most rainy months:
June 6 days
July 5 days
August 4 days
The most windy months:
October 10 mph
November 10 mph
January 10 mph

Sanibel 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
Sanibel Island
Local time: 10:55
29 jan, thursday
1200 64°F
SW
10 mph
1500 70°F
S
2 mph
1800 68°F
S
7 mph
2100 58°F
SW
7 mph
30 jan, friday
0000 60°F
SW
8 mph
0300 58°F
SW
6 mph
0600 56°F
SW
6 mph
0900 56°F
S
7 mph