21.12
sun
sun
Day
77°F
SW 13 mph
Precip.
0%
0%
Night
72°F
SW 19 mph
Precip.
0%
0%
22.12
mon
mon
Day
73°F
SW 24 mph
Precip.
0%
0%
Night
73°F
W 24 mph
Precip.
0%
0%
23.12
tue
tue
Day
73°F
SW 19 mph
Precip.
0%
0%
Night
75°F
W 19 mph
Precip.
100%
100%
24.12
wed
wed
Day
75°F
SW 21 mph
Precip.
74%
74%
Night
73°F
W 19 mph
Precip.
87%
87%
25.12
thu
thu
Day
73°F
W 19 mph
Precip.
100%
100%
Night
75°F
W 17 mph
Precip.
100%
100%
26.12
fri
fri
Day
75°F
SW 19 mph
Precip.
0%
0%
Night
73°F
SW 15 mph
Precip.
0%
0%
27.12
sat
sat
Day
73°F
SW 13 mph
Precip.
0%
0%
Night
73°F
W 12 mph
Precip.
0%
0%
28.12
sun
sun
Day
73°F
SW 11 mph
Precip.
40%
40%
Night
73°F
SW 12 mph
Precip.
0%
0%
29.12
mon
mon
Day
72°F
S 12 mph
Precip.
0%
0%
Night
75°F
SW 12 mph
Precip.
21%
21%
30.12
tue
tue
Day
75°F
W 11 mph
Precip.
80%
80%
Night
75°F
NW 24 mph
Precip.
100%
100%
31.12
wed
wed
Day
75°F
NW 21 mph
Precip.
100%
100%
Night
75°F
NW 11 mph
Precip.
0%
0%
01.01
thu
thu
Day
77°F
N 2 mph
Precip.
41%
41%
Night
75°F
NE 5 mph
Precip.
0%
0%
02.01
fri
fri
Day
75°F
W 11 mph
Precip.
100%
100%
Night
73°F
W 17 mph
Precip.
29%
29%
03.01
sat
sat
Day
73°F
W 12 mph
Precip.
0%
0%
Night
73°F
NW 9 mph
Precip.
0%
0%
sea water
temperature
temperature
| Key Largo |
monthly
weather
weather
| Key Largo |
current
weather
weather
| Key Largo |
7 days
forecast
forecast
| Key Largo |
Sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 77.0°F. The highest and lowest sea temperatures during the month were 79.5°F and 74.3°F.
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 71.1°F. The highest and lowest sea temperatures during the month were 75.7°F and 66.7°F.
Air temperature in Key Largo, °F
Precipitation total in Key Largo, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Key Largo
Key Largo on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Key Largo
Local time: 13:01
December 21, sunday
1500
79°F
SW
16 mph
16 mph
1800
77°F
SW
17 mph
17 mph
2100
72°F
SW
19 mph
19 mph
December 22, monday
0000
72°F
SW
19 mph
19 mph
0300
72°F
SW
21 mph
21 mph
0600
72°F
SW
21 mph
21 mph
0900
73°F
SW
22 mph
22 mph
1200
73°F
SW
24 mph
24 mph
