Crystal River weather in September 2025

Expect 32°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Crystal River in September. Check more long-term weather averages for Crystal River in September before you book your next holiday to Florida in 2025/2026.

  • 32°C maximum daytime temperature in September in Crystal River32
    32°C max day temperature
  • 8 hours of sunshine per day
  • 12 days with some rainfall in September in Crystal River12
    12 days with some rainfall
  • 21°C minimum night-time temperature in September in Crystal River21
    21°C min night temperature
  • 12 hours of daylight per day in September in Crystal River12
    12 hours of daylight per day
  • Very high heat & humidity in September in Crystal RiverVH
    Very High heat & humidity
  • 160 mm monthly rainfall in September in Crystal River160
    160 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in September in Crystal River9
    9 (Very High) UV index
  • 28°C sea temperature in September in Crystal River28
    28°C sea temperature

More about Crystal River

Crystal River by month

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The September weather guide for Florida (Crystal River) 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 Florida

How hot is it in Crystal River in September?

Daytime temperatures usually reach 32°C in Crystal River in September with very high heat and humidity, falling to 21°C at night.

How sunny is it in Crystal River in September?

There are normally 8 hours of bright sunshine each day in Crystal River in September - that's 63% of daylight hours.

How warm is the sea around Crystal River in September?

The average sea temperature around Crystal River in September is 28°C.

Does it rain in Crystal River in September?

There are usually 12 days with some rain in Crystal River in September and the average monthly rainfall is 160mm.

What is the chance of a hurricane in Crystal River in September?

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

Crystal River September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:08 18:52
Monday, 15th September 2025 06:15 18:35
Tuesday, 30th September 2025 06:23 18:17

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