Measurements:
°C
°F
Sanibel Island
76°F
SW 19 mph
Feels like: 80°F
Precip: 7%
World Resorts USA Sanibel Island Weather

Sanibel Island Sea Water Temperature

Current Sea Water Temperature:
+79.2°F
Maximum Sea Water Temperature in October: 91.0°F
Minimum Sea Water Temperature in October: 76.6°F
Average water temperature in October: 84.9°F

Sea Water Temperature for the Last 10 Days:

October 26 79.2°F October 21 83.4°F
October 25 80.2°F October 20 83.6°F
October 24 80.6°F October 19 85.2°F
October 23 81.2°F October 18 86.8°F
October 22 81.8°F October 17 87.6°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: 2026 2025 2024

The average sea surface temperature in August 2026 for Sanibel Island was 92.2°F. The maximum and minimum values were 90.4°F and 93.8°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Sanibel Island was 92.3°F. The maximum and minimum values were 90.6°F and 93.6°F respectively.

Sea Water Temperature in September

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Sanibel Island was 91.2°F. The maximum and minimum values were 88.0°F and 93.4°F respectively.

Best Time to Visit Sanibel Island
The most sunny months:
March 19 days
April 18 days
December 17 days
The most warm months:
July 92.6 °F
August 92.6 °F
June 91.2 °F
Warmest sea temperature:
August 91.9 °F
July 91.5 °F
September 90.4 °F
The most cold months:
January 71.3 °F
December 74.5 °F
February 75.1 °F
The most rainy months:
July 5 days
June 5 days
August 4 days
The most windy months:
October 11 mph
November 10 mph
January 10 mph

Sanibel Island on the Weather Map

USA Resorts:
NAME
F°
Boston +58
Chicago +58
Hawaii +80
Houston +74
Las Vegas +64
Los Angeles +74
Maui +72
Miami +82
New York +62
Panama City Beach +64
San Diego +74
San Francisco +60
Santa Monica +72
Tampa +74
Washington +58
24 Hours Weather Forecast
Sanibel Island
Local time: 23:52
27 oct, tuesday
0000 76°F
SW
19 mph
0300 74°F
SW
17 mph
0600 74°F
SW
17 mph
0900 76°F
SW
17 mph
1200 82°F
SW
19 mph
1500 84°F
SW
19 mph
1800 82°F
SW
19 mph
2100 78°F
SW
19 mph