Key West weather in September 2019

  • 31°C maximum daytime temperature in September in Key West31
    31°C max day temperature
  • 9 hours of sunshine per day
  • 15 days with some rainfall in September in Key West15
    15 days with some rainfall
  • 25°C minimum night-time temperature in September in Key West25
    25°C min night temperature
  • 12 hours of daylight per day in September in Key West12
    12 hours of daylight per day
  • Very high heat & humidity in September in Key WestVH
    Very High heat & humidity
  • 166 mm monthly rainfall in September in Key West166
    166 mm of monthly rainfall
  • UV (maximum) index 10 (Very High) in September in Key West10
    10 (Very High) UV index
  • 29°C sea temperature in September in Key West29
    29°C sea temperature
  • Top deals & discounts
  • Key West weather overview
  • Key West climate averages by month
  • More destinations
  • Best time to go to Key West
  • Key West 5-day weather forecast

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

The September weather guide for Key West, Florida 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.

  • Save EXTRA £300 on select hotels in Universal Orlando
  • No minimum spend with unique TUI discount code
  • Travel between 1st Jun & 30th Jun 2020 (inclusive)

Expires at 23:59 on Monday 30th Sep 2019 · View all TUI offers

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

Key West sunrise & sunset times for September 2019

Browse the sunrise & sunset times for Key West in September 2019. Select a month to view Key West sunrise & sunset times for the next twelve months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Sunday, 1st September 2019 07:08 19:46
Sunday, 15th September 2019 07:13 19:31
Monday, 30th September 2019 07:19 19:15
  • Book low fares on Virgin Atlantic flights to Orlando
  • Depart from London Gatwick, Manchester & Glasgow
  • Return flights to Orlando from £256

Expires at 23:59 on Sunday 22nd Sep 2019 · View all Virgin Atlantic offers

Virgin AtlanticVirgin Atlantic destinations

Back to top

Discover more about Florida

Where's hot in Florida in September?

Below are average maximum temperatures at popular destinations in Florida in September. Select a destination to see more weather parameters.

More destinations & map >>

Related posts

Popular travel offers

Top ^

*affiliate links: find out how we are funded and why this helps us remain free to use.