Best year time to visit Key West

General weather information about Key West

Average annual temperature is 6.6 °C

Absolute maximum temperature: 35.6 °C

Absolute minimum temperature: -29.5 °C

Number of sunny days: 204 days

Number of rainy days: 113 days

Number of snow days: 48 days

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* Weather data for Key West United States is based on climate observations for 2026 year

Key West air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)0.44.12.813.630.235.634.534.134.730.212.19.7
Average daytime temperature (°C)-6.5-4.3-2.37.023.827.827.226.724.413.04.61.7
Average temperature (°C)-10.2-10.6-7.41.516.622.020.820.918.58.4-0.2-2.1
Average night temperature (°C)-13.2-15.5-11.6-3.09.816.815.016.213.74.4-3.6-4.9
Absolute minimum temperature (°C)-27.6-29.5-19.3-11.30.09.79.511.06.7-8.3-13.2-16.0

Key West monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)9.010.012.014.015.016.015.014.013.011.09.08.0
Daylight mean duration (h)8.910.211.913.715.216.015.614.312.610.89.38.5
Daylight minimum duration (h)8.09.011.012.014.015.015.013.011.010.08.08.0
Sunshine mean duration (h)3.17.28.07.811.912.613.210.59.66.75.44.0
Precipitation (mm)91139495388235643622047
Sunny days221819111913161316172020
Rainy days0201012171518141276
Snow days9812900000235

Key West - weather forecast by months

Key West weather in januaryKey West weather in februaryKey West weather in marchKey West weather in aprilKey West weather in mayKey West weather in juneKey West weather in julyKey West weather in augustKey West weather in septemberKey West weather in octoberKey West weather in novemberKey West weather in december

Best time to visit Key West:

The best time to visit Key West during the most sunny months:

  • May — 11.9(h)
  • June — 12.6(h)
  • July — 13.2(h)
  • August — 10.5(h)

Months with the longest average daylight duration in Key West:

  • June — 16.0(h)
  • July — 15.6(h)

The largest precipitation sum in Key West is at

  • May — 53(mm)
  • June — 88(mm)
  • August — 56(mm)
  • October — 62(mm)

    • Weather forecast in the closest to Key West admin centers

    Weather forecast in the closest towns to Key West

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    Frequently asked questions

    When is the best time to visit Key West?
    The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Key West.
    What is the weather like in Key West?
    See average temperature, rainfall and daylight hours for Key West by month in the table above.
    How many sunny days does Key West have?
    The monthly weather statistics above show sunshine and rainfall patterns for Key West throughout the year.