The temperatures in Sanibel during August are extremely high, between 27°C and hot as 31°C, drinking water regularly is advisable.
There’s going to be many days of rain during the month of August in Sanibel.
Sanibel should expect an average of 15 to 22 days of rain, so be sure to bring along a waterproof jacket to stay dry this month!
Our weather forecast can give you a great sense of what weather to expect in Sanibel in August 2025.
If you’re planning to visit Sanibel in the near future, we highly recommend that you review the 14 day weather forecast for Sanibel before you arrive.
Temperatures
31° / 27°
Rainy Days
19
Snowy Days
0
Dry Days
12
Rainfall
458
mm
Sun Hours
11.5
Hrs
