Miami weather in September 2025

Expect daytime maximum temperatures of 31°C in Miami, Florida in September and very high heat and humidity based on long-term weather averages. There are 9 hours of sunshine per day on average with 17 days with some rainfall and typically 178 mm of rainfall in the month.

  • 31°C maximum daytime temperature in September in Miami31
    31°C max day temperature
  • 9 hours of sunshine per day
  • 17 days with some rainfall in September in Miami17
    17 days with some rainfall
  • 25°C minimum night-time temperature in September in Miami25
    25°C min night temperature
  • 12 hours of daylight per day in September in Miami12
    12 hours of daylight per day
  • Very high heat & humidity in September in MiamiVH
    Very High heat & humidity
  • 178 mm monthly rainfall in September in Miami178
    178 mm of monthly rainfall
  • UV (maximum) index 10 (Very High) in September in Miami10
    10 (Very High) UV index
  • 29°C sea temperature in September in Miami29
    29°C sea temperature

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The September weather guide for Florida (Miami) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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More about Miami

How hot is it in Miami in September?

Daytime temperatures usually reach 31°C in Miami in September with very high heat and humidity, falling to 25°C at night.

How sunny is it in Miami in September?

There are normally 9 hours of bright sunshine each day in Miami in September - that's 70% of daylight hours.

How warm is the sea around Miami in September?

The average sea temperature around Miami in September is 29°C.

Does it rain in Miami in September?

There are usually 17 days with some rain in Miami in September and the average monthly rainfall is 178mm.

What is the chance of a hurricane in Miami in September?

On average 1 day in September in Miami is likely to be affected by the passage of one or more tropical storms.

Miami September sunrise & sunset times

Browse the sunrise and sunset times for Miami in September 2025. Select a month to view Miami sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:01 18:40
Monday, 15th September 2025 06:07 18:25
Tuesday, 30th September 2025 06:13 18:08

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