22.03
sun
sun
Day
70°F
SW 4 mph
Precip.
0%
0%
Night
70°F
NW 5 mph
Precip.
0%
0%
23.03
mon
mon
Day
68°F
SW 6 mph
Precip.
0%
0%
Night
68°F
SE 4 mph
Precip.
0%
0%
24.03
tue
tue
Day
64°F
SW 3 mph
Precip.
0%
0%
Night
63°F
S 5 mph
Precip.
0%
0%
25.03
wed
wed
Day
73°F
W 7 mph
Precip.
0%
0%
Night
72°F
W 11 mph
Precip.
0%
0%
26.03
thu
thu
Day
73°F
W 12 mph
Precip.
0%
0%
Night
73°F
W 14 mph
Precip.
0%
0%
27.03
fri
fri
Day
73°F
W 12 mph
Precip.
0%
0%
Night
73°F
SW 14 mph
Precip.
100%
100%
28.03
sat
sat
Day
72°F
SW 6 mph
Precip.
55%
55%
Night
72°F
SW 12 mph
Precip.
100%
100%
29.03
sun
sun
Day
73°F
SW 19 mph
Precip.
75%
75%
Night
72°F
SW 29 mph
Precip.
100%
100%
30.03
mon
mon
Day
72°F
SW 30 mph
Precip.
20%
20%
Night
72°F
SW 25 mph
Precip.
0%
0%
31.03
tue
tue
Day
72°F
SW 22 mph
Precip.
70%
70%
Night
72°F
SW 21 mph
Precip.
100%
100%
01.04
wed
wed
Day
72°F
W 17 mph
Precip.
72%
72%
Night
72°F
SW 13 mph
Precip.
75%
75%
02.04
thu
thu
Day
73°F
W 16 mph
Precip.
100%
100%
Night
73°F
W 19 mph
Precip.
0%
0%
03.04
fri
fri
Day
73°F
W 16 mph
Precip.
82%
82%
Night
73°F
W 19 mph
Precip.
100%
100%
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 March, °F
Show year:
2026
2025
2024
The average sea water temperature in March of 2026 was 77.3°F. The highest and lowest sea temperatures during the month were 79.7°F and 73.0°F.
Sea water temperature in April, °F
Show year:
2025
2024
2023
The average sea water temperature in April of 2025 was 78.5°F. The highest and lowest sea temperatures during the month were 80.1°F and 76.6°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: 00:40
March 22, sunday
0300
68°F
SW
2 mph
2 mph
0600
66°F
SE
5 mph
5 mph
0900
68°F
S
6 mph
6 mph
1200
70°F
SW
4 mph
4 mph
1500
72°F
W
7 mph
7 mph
1800
73°F
W
8 mph
8 mph
2100
70°F
W
8 mph
8 mph
March 23, monday
0000
70°F
NW
5 mph
5 mph
