Bay Harbor Islands Weather in September

The climate in Bay Harbor Islands during September can be summarized as hot, humid and wet.

September is in the fall / autumn in Bay Harbor Islands and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a steamy 31°C (88°F), whilst at night 24°C (76°F) is normal.

On average September is the 2nd wettest month of the year in Bay Harbor Islands with around 191mm 7.5 inches of rain making it a wet time to visit. This rainfall is typically spread over 17 days, although this may vary considerably.

On the flip side this corresponds to an average of 9.1 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 Bay Harbor Islands in September 2024.