Current sea water temperature:
+69.3°F
| Minimum sea water temperature in December: | 76.5°F |
| Maximum sea water temperature in December: | 62.2°F |
| Average sea water temperature in December: | 69.8°F |
| more information | |
14 days
forecast
forecast
| Sanibel Island |
monthly
weather
weather
| Sanibel Island |
Sea water temperature for the last 10 days:
| December 18 | 69.3°F | December 13 | 71.1°F |
| December 17 | 69.1°F | December 12 | 71.6°F |
| December 16 | 70.5°F | December 11 | 71.6°F |
| December 15 | 70.9°F | December 10 | 73.0°F |
| December 14 | 70.9°F | December 9 | 73.4°F |
Monthly sea water temperature, °F
When is the warmest sea in Sanibel Island?
Based on the data about daily sea water temperature for the last three years the warmest sea in Sanibel Island was noticed in August, July and September.
Monthly Sea Temperatures in Sanibel Island, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 88.8°F. The highest and lowest sea temperatures during the month were 90.0°F and 87.3°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 86.9°F. The highest and lowest sea temperatures during the month were 89.2°F and 85.3°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 85.7°F. The highest and lowest sea temperatures during the month were 87.6°F and 83.8°F.
current
weather
weather
| Sanibel Island |
weather in
December
December
| Sanibel Island |
Best time for vacation in Sanibel Island
Sanibel Island on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Sanibel Island
Local time: 15:03
December 18, thursday
1800
75°F
N
15 mph
15 mph
2100
72°F
NW
14 mph
14 mph
December 19, friday
0000
72°F
N
13 mph
13 mph
0300
72°F
N
11 mph
11 mph
0600
72°F
NE
10 mph
10 mph
0900
72°F
E
9 mph
9 mph
1200
72°F
E
11 mph
11 mph
1500
72°F
SE
12 mph
12 mph
