Key West Weather in March

The climate in Key West during March can be summarized as warm, humid and reasonably dry.

March is in the spring in Key West and is typically the 4th coldest month of the year. Daytime maximum temperatures average around a muggy 26°C (79°F), whilst at night 20°C (67°F) is normal.

On average March is the driest month of the year in Key West with around 40mm 1.6 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 5 days, although this may vary considerably.

On the flip side this corresponds to an average of 10.3 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 Key West in March 2024.