Sanibel Weather in August

The climate in Sanibel during August can be summarized as very hot, humid and very wet.

August is in the summer in Sanibel and is typically the warmest month of the year. Daytime maximum temperatures average around a steamy 33°C (91°F), whilst at night 24°C (75°F) is normal.

On average August is the 2nd wettest month of the year in Sanibel with around 227mm 8.9 inches of rain making it a very wet time to visit. This rainfall is typically spread over 16 days, although this may vary considerably.

On the flip side this corresponds to an average of 9.4 hours of sunshine per day.

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Sanibel in August 2024.