Siesta Key Weather in May

The climate in Siesta Key during May can be summarized as hot, humid and a little damp.

May is in the spring in Siesta Key and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a steamy 31°C (88°F), whilst at night 19°C (67°F) is normal.

On average May is the 5th wettest month of the year in Siesta Key with around 84mm 3.3 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 7 days, although this may vary considerably.

On the flip side this corresponds to an average of 10.8 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 Siesta Key in May 2025.