Florida weather in September

In September, Florida averages 30°C by day across Miami and Orlando. Miami is the warmest at 30°C, Orlando the coolest at 30°C. The sea is 31°C.

Florida in September, place by place

Warmest first. Anywhere at 24°C or more is proper beach weather. Tap a place for its full September detail.

DestinationDayNightSeaRainFlight
MiamiUSAwet season30°C25°C31°C213 mm9h
OrlandoUSAwet season30°C23°C–279 mm8½h
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Florida in September: quick answers

Is Florida hot in September?

In September, Florida averages 30°C by day across Miami and Orlando. Miami is the warmest at 30°C, Orlando the coolest at 30°C. The sea is 31°C. September is hot but wet in Miami: rainy season, so pack for showers.

Where is warmest in Florida in September?

Miami, at an average high of 30°C. The driest is Miami, with about 213 mm of rain.

Can you swim in the sea in Florida in September?

Yes: Miami (31°C) has sea temperatures of 21°C or more, comfortable without a wetsuit.

How we measured this

Florida here means Miami and Orlando: the places we measure. Figures are averages of every day from 2016 to 2025 from the Open-Meteo historical weather archive (ECMWF ERA5); sea temperatures are 2023 to 2025 averages. Rain is the average monthly total, and 150 mm or more counts as rainy season.

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