Key West Weather in October
October in Key West averages 30°C (86°F) during the day and 25°C (77°F) at night. Quite a bit of rainfall is typical this month, with around 159 mm (6.3 in) on average. An umbrella is a good idea.
Rainfall in Key West in October
Based on our climate data of the past 30 years, about 16 days of rain are anticipated, with 159 mm (6.3 in) on average. Expect frequent rainfall this month, and not just light drizzle. When it rains, it tends to come down hard.
Temperature in Key West in October
Temperatures in Key West in October top out at 30°C (86°F) and drop to 25°C (77°F) overnight. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. Nights stay warm at around 25°C (77°F), so light bedding and good ventilation are worth thinking about.
Sunshine in Key West in October
Enjoy a sunny month with about 255 hours of sunshine, the clear skies make Key West even more beautiful.
Average water temperature in October
The water is 28°C (82°F) this month — warm enough that getting in requires no effort at all. Good conditions for swimming, snorkeling, or just floating around.If you prefer dry days with pleasant temperatures, October may not be the ideal month to visit Key West. Our weather planner can help you explore destinations with more pleasant weather conditions.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Key West's climate page.
Key West Temperature in October
Min Temperature
25°C (77°F)
Max Temperature
30°C (86°F)
Water Temperature
28°C (82°F)
Chance of Rain
52%
Precipitation
159 mm (6.3 in)
Rainy days
16 days
Humidity
75%
Sunshine
255 hours
Percentage Sunshine
71%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Key West typically stay consistent throughout October, with daily highs averaging around 30°C (86°F). Nights are warm, with lows typically ranging from 24°C (75°F) to 26°C (79°F).
Average temperatures in October
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in October
Historical weather for Key West in October
Browse day-by-day weather records for Key West spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Key West historical weather extremes in October
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Key West.
- Key West recorded its highest October temperature of 33°C (91°F) on October 20, 1980.
- The coldest October day was on October 29, 2008, with a maximum of 21°C (70°F).
- The coldest night in October in Key West was on October 29, 2008, with a minimum of 16°C (61°F).
Best Places in the United States of America in October
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in October →
perfect weather
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unpleasant
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What to Wear in Key West in October
Warm but pleasant conditions in Key West in October. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. Expect water temperatures of around 28°C (82°F), which is ideal for taking a refreshing dip. Bring swimwear and consider packing a towel for drying off. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Key West in October
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Key West's climate page.
Temperature Rainfall Sunshine Humidity Water Temp
See the full Key West climate overview or explore weather in the United States of America.
