Current Sea Water Temperature:
+80.0°F
| Maximum Sea Water Temperature in April: | 87.6°F |
| Minimum Sea Water Temperature in April: | 75.0°F |
| Average water temperature in April: | 82.0°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| April 11 | 80.0°F | April 06 | 81.6°F |
| April 10 | 80.6°F | April 05 | 82.8°F |
| April 09 | 82.2°F | April 04 | 83.4°F |
| April 08 | 83.2°F | April 03 | 83.0°F |
| April 07 | 82.0°F | April 02 | 81.4°F |
When is the Warmest Sea for Key West?
According to our data for the last three years for Key West the highest average sea water temperature was in August, July and September.
Average Water Temperature by Month, °F
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
0
15
30
45
60
75
90
105
120
78.5
82
86.8
90
91.1
90.6
88.4
85.5
82
78.6
76.3
75.7
Sea Water Temperature in August
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
85
88
91
94
97
100
The average sea surface temperature in August 2024 for Key West was 92.0°F. The maximum and minimum values were 90.2°F and 93.6°F respectively.
Sea Water Temperature in July
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
85
88
91
94
97
100
The average sea surface temperature in July 2024 for Key West was 91.7°F. The maximum and minimum values were 89.8°F and 93.4°F respectively.
Sea Water Temperature in September
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
83
86
89
92
95
98
The average sea surface temperature in September 2024 for Key West was 91.6°F. The maximum and minimum values were 87.6°F and 94.0°F respectively.
USA Resorts:
NAME
F°
| Boston |  |
+38 |
| Chicago |  |
+38 |
| Hawaii |  |
+78 |
| Honolulu | |
+78 |
| Houston |  |
+82 |
| Las Vegas |  |
+96 |
| Los Angeles | |
+80 |
| Miami | |
+76 |
| New York | |
+44 |
| Orlando | |
+76 |
| San Diego |  |
+68 |
| San Francisco | |
+54 |
| Sarasota | |
+72 |
| Tampa | |
+74 |
| Washington | |
+46 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Key West
Local time: 21:31
12 apr, saturday
| 0000 |  |
76°F | SE 15 mph |
| 0300 |  |
74°F | SE 16 mph |
| 0600 | |
74°F | SE 13 mph |
| 0900 |  |
74°F | SE 15 mph |
| 1200 |  |
76°F | S 14 mph |
| 1500 | |
78°F | S 14 mph |
| 1800 | |
78°F | SE 17 mph |
| 2100 | |
74°F | SE 20 mph |