Measurements:
°C
°F
Sanibel Island
86°F
NE 6 mph
Feels like: 90°F
Precip: 0%
World Resorts USA Sanibel Island Weather

Sanibel Island Sea Water Temperature

Current Sea Water Temperature:
+71.0°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 08 71.0°F January 03 68.6°F
January 07 70.6°F January 02 69.0°F
January 06 70.2°F January 01 70.6°F
January 05 70.0°F December 31 71.8°F
January 04 68.4°F December 30 73.0°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 71.1 °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 +54
Hawaii +78
Honolulu +78
Houston +78
Las Vegas +54
Los Angeles +58
Maui +72
Miami +86
Miami Beach +80
New York +52
San Diego +64
San Francisco +52
Sarasota +82
Tampa +88
Washington +60
24 Hours Weather Forecast
Sanibel Island
Local time: 15:32
08 jan, thursday
1800 78°F
NE
6 mph
2100 68°F
N
7 mph
09 jan, friday
0000 66°F
NW
10 mph
0300 66°F
W
10 mph
0600 66°F
W
11 mph
0900 68°F
NW
11 mph
1200 70°F
NW
11 mph
1500 72°F
N
9 mph