18.05
mon
mon
Day
86°F
W 19 mph
Precip.
0%
0%
Night
82°F
W 21 mph
Precip.
65%
65%
19.05
tue
tue
Day
82°F
W 17 mph
Precip.
100%
100%
Night
82°F
W 20 mph
Precip.
100%
100%
20.05
wed
wed
Day
82°F
W 17 mph
Precip.
73%
73%
Night
82°F
W 19 mph
Precip.
100%
100%
21.05
thu
thu
Day
82°F
W 13 mph
Precip.
77%
77%
Night
81°F
W 15 mph
Precip.
72%
72%
22.05
fri
fri
Day
81°F
W 10 mph
Precip.
100%
100%
Night
82°F
W 19 mph
Precip.
100%
100%
23.05
sat
sat
Day
82°F
W 12 mph
Precip.
70%
70%
Night
82°F
W 19 mph
Precip.
0%
0%
24.05
sun
sun
Day
82°F
W 15 mph
Precip.
100%
100%
Night
82°F
W 19 mph
Precip.
100%
100%
sea water
temperature
temperature
| Key Largo |
monthly
weather
weather
| Key Largo |
current
weather
weather
| Key Largo |
14 days
forecast
forecast
| Key Largo |
Sea water temperature in May, °F
Show year:
2026
2025
2024
The average sea water temperature in May of 2026 was 84.2°F. The highest and lowest sea temperatures during the month were 86.2°F and 81.5°F.
Sea water temperature in June, °F
Show year:
2025
2024
2023
The average sea water temperature in June of 2025 was 85.2°F. The highest and lowest sea temperatures during the month were 86.7°F and 83.8°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: 10:22
May 18, monday
1200
86°F
W
19 mph
19 mph
1500
84°F
W
18 mph
18 mph
1800
82°F
W
19 mph
19 mph
2100
82°F
W
20 mph
20 mph
May 19, tuesday
0000
82°F
W
21 mph
21 mph
0300
82°F
W
21 mph
21 mph
0600
82°F
W
19 mph
19 mph
0900
82°F
W
18 mph
18 mph
