Measurements:
°C
°F
Key West
78°F
W 14 mph
Feels like: 84°F
Precip: 0%
World Resorts USA Key West Weather January Weather in Key West

Key West Weather: January

Average Day Temperature: 74.5°F
Average Night Temperature: 71.5°F
Sea Water Temperature: 75.7°F
Number of Sunny Days: 10 days
Sunshine Hours: 10.6 - 11.0 hours
Number of Rainy Days: 2 days
Precipitation Totals: 1.2 in

Air Temperature in January, °F

Select Year: 2025 2024 2023

The highest day temperature in January 2025 was 76°F. The lowest night temperature was 61°F. The average values for day and night temperatures during January were 69.4°F и 69.1°F respectivly.

Key West Water Sea Temperature in January, °F

Select Year: 2025 2024 2023

The average sea surface temperature in January 2025 for Key West was 72.5°F. The maximum and minimum values were 67.8°F and 78.4°F respectively.

Sunny, Cloudy and Gloomy days

You can expect various weather conditions during January. Be ready for sunny, cloudy or even gloomy days.

Precipitation Totals in January, in

Precipitation total in January for Key West is 1.2 in. It makes january one of the least rainy months of the year.

Wind Speed in January, mph

The average wind speed in January is 13.8 mph. It makes January one of the most windy months of the year for Key West.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Key West in January is 6.1 hours.

Best Time to Visit Key West
The most sunny months:
May 16 days
March 16 days
April 16 days
The most warm months:
August 91.6 °F
July 91.0 °F
September 89.7 °F
Warmest sea temperature:
August 91.3 °F
July 90.6 °F
September 90.1 °F
The most cold months:
January 74.5 °F
February 76.6 °F
December 78.2 °F
The most rainy months:
June 7 days
August 7 days
September 6 days
The most windy months:
November 14 mph
December 14 mph
January 14 mph

Key West on the Weather Map

USA Resorts:
NAME
Chicago 0
Hawaii +78
Honolulu +78
Houston +46
Las Vegas +44
Los Angeles +56
Maui +72
Miami +72
Miami Beach +80
New York +20
San Diego +58
San Francisco +48
Sarasota +64
Tampa +64
Washington +28
24 Hours Weather Forecast
Key West
Local time: 00:58
05 dec, friday
0300 78°F
W
13 mph
0600 80°F
W
11 mph
0900 78°F
W
7 mph
1200 78°F
W
11 mph
1500 80°F
W
12 mph
1800 82°F
NW
11 mph
2100 80°F
NW
10 mph
06 dec, saturday
0000 78°F
NW
11 mph