World Resorts USA Key West Weather

Key West 7 Days Forecast

29.06
mon
Day
90°F
W 11 mph
Precip.
6%
Night
86°F
W 12 mph
Precip.
7%
30.06
tue
Day
84°F
W 5 mph
Precip.
13%
Night
86°F
SW 6 mph
Precip.
6%
01.07
wed
Day
84°F
NW 6 mph
Precip.
20%
Night
86°F
W 6 mph
Precip.
4%
02.07
thu
Day
84°F
NW 6 mph
Precip.
6%
Night
86°F
W 11 mph
Precip.
4%
03.07
fri
Day
84°F
NW 5 mph
Precip.
11%
Night
84°F
W 12 mph
Precip.
8%
04.07
sat
Day
84°F
NW 11 mph
Precip.
12%
Night
84°F
NW 15 mph
Precip.
13%
05.07
sun
Day
84°F
NW 14 mph
Precip.
12%
Night
84°F
NW 16 mph
Precip.
11%

Sea water temperature in June, °F

Show year:
2026
2025
2024

The average sea water temperature in June of 2026 was 86.8°F. The highest and lowest sea temperatures during the month were 90.3°F and 83.5°F.

Sea water temperature in July, °F

Show year:
2025
2024
2023

The average sea water temperature in July of 2025 was 86.7°F. The highest and lowest sea temperatures during the month were 88.0°F and 85.1°F.

Air temperature in Key West, °F

Precipitation total in Key West, in.

* Charts above show average data for the last 3 years.

Best time for vacation in Key West

Sunniest months:
May 17 days
March 16 days
April 16 days
Warmest months:
August 87.4 °F
July 86.9 °F
September 85.8 °F
Warmest sea temp:
August 87.2 °F
July 86.6 °F
September 86.1 °F
Coldest months:
January 72.0 °F
February 73.7 °F
December 75.4 °F
Rainiest months:
August 7 days
September 6 days
July 6 days
Windiest months:
November 14.7 mph
December 13.9 mph
January 13.8 mph

Key West on a weather map

Key West
+86°F
W 12 mph
Feels like: +95°F
Precip.: 7%
Places in USA:
Name
°F
+64°F
+77°F
+82°F
+64°F
+81°F
+84°F
+73°F
+81°F
+72°F
+64°F
+63°F
+81°F
+81°F
+82°F
+79°F
24 Hours Forecast
Key West
Local time: 22:51
June 30, tuesday
0000
86°F
W
12 mph
0300
84°F
W
11 mph
0600
84°F
W
9 mph
0900
84°F
NW
7 mph
1200
84°F
W
5 mph
1500
86°F
SW
4 mph
1800
86°F
S
3 mph
2100
86°F
SW
6 mph
Units of measurement: °C / °F