World Resorts USA Key West Weather

Key West sea water temperature

Current sea water temperature:
+87.3°F
Minimum sea water temperature in June: 89.1°F
Maximum sea water temperature in June: 80.2°F
Average sea water temperature in June: 84.5°F

Sea water temperature for the last 10 days:

June 2 87.3°F May 28 87.4°F
June 1 89.1°F May 27 87.6°F
May 31 90.0°F May 26 86.9°F
May 30 88.3°F May 25 87.3°F
May 29 88.7°F May 24 86.2°F

When is the warmest sea in Key West?

Based on the data about daily sea water temperature for the last three years the warmest sea in Key West was noticed in August, July and September.

Monthly Sea Temperatures in Key West, °F

Sea water temperature in August, °F

Show year:
2023
2022
2021

The average sea water temperature in August of 2023 was 88.8°F. The highest and lowest sea temperatures during the month were 91.4°F and 86.0°F.

Sea water temperature in July, °F

Show year:
2023
2022
2021

The average sea water temperature in July of 2023 was 89.4°F. The highest and lowest sea temperatures during the month were 91.0°F and 87.8°F.

Sea water temperature in September, °F

Show year:
2023
2022
2021

The average sea water temperature in September of 2023 was 87.3°F. The highest and lowest sea temperatures during the month were 88.9°F and 85.6°F.

Best time for vacation in Key West

Sunniest months:
March 16 days
April 16 days
May 16 days
Warmest months:
August 87.7 °F
July 87.2 °F
September 85.8 °F
Warmest sea temp:
August 87.0 °F
July 86.5 °F
September 85.9 °F
Coldest months:
January 72.4 °F
February 74.0 °F
December 75.7 °F
Rainiest months:
August 7 days
July 7 days
September 7 days
Windiest months:
November 14.6 mph
December 13.7 mph
March 13.7 mph

Key West on a weather map

Key West
+82°F
W 12 mph
Feels like: +88°F
Precip.: 0%
Places in USA:
Name
°F
+81°F
+77°F
+75°F
+75°F
+88°F
+72°F
+82°F
+79°F
+91°F
+66°F
+61°F
+86°F
+90°F
+90°F
+66°F
24 Hours Forecast
Key West
Local time: 14:42
June 02, sunday
1500
82°F
W
12 mph
1800
82°F
W
15 mph
2100
82°F
W
19 mph
June 03, monday
0000
82°F
W
17 mph
0300
82°F
W
14 mph
0600
82°F
W
11 mph
0900
82°F
W
9 mph
1200
82°F
W
11 mph
Units of measurement: °C / °F