Measurements:
°C
°F
CURRENT WEATHER
17:05
Key West
82°F
N 4 mph
Feels like: 88°F
Precip: 0%
World Resorts USA Key West Weather

7 Day Weather Forecast

03.13
fri
DAY
82°F
W 4 mph
precip
0%
NIGHT
76°F
NW 6 mph
precip
0%
03.14
sat
DAY
76°F
NW 8 mph
precip
0%
NIGHT
78°F
NW 15 mph
precip
0%
03.15
sun
DAY
78°F
NW 17 mph
precip
100%
NIGHT
80°F
NW 18 mph
precip
0%
03.16
mon
DAY
80°F
N 15 mph
precip
0%
NIGHT
80°F
E 12 mph
precip
100%
03.17
tue
DAY
70°F
S 21 mph
precip
88%
NIGHT
70°F
S 26 mph
precip
0%
03.18
wed
DAY
70°F
SW 21 mph
precip
0%
NIGHT
72°F
SW 25 mph
precip
100%
03.19
thu
DAY
72°F
SW 26 mph
precip
100%
NIGHT
74°F
S 19 mph
precip
0%

Key West Sea Water Temperature in March, °F

Select Year: 2025 2024 2023

The average sea surface temperature in March 2025 for Key West was 23.6°F. The maximum and minimum values were 22.4°F and 25.1°F respectively.

Key West on the Weather Map

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 74.4 °F
February 76.3 °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
more details