Current sea water temperature:
+87.3°F
| Minimum sea water temperature in July: | 91.2°F |
| Maximum sea water temperature in July: | 83.5°F |
| Average sea water temperature in July: | 87.2°F |
| more information | |
14 days
forecast
forecast
| Key Largo |
monthly
weather
weather
| Key Largo |
Sea water temperature for the last 10 days:
| July 21 | 87.3°F | July 16 | 87.6°F |
| July 20 | 88.2°F | July 15 | 87.8°F |
| July 19 | 87.6°F | July 14 | 87.8°F |
| July 18 | 88.2°F | July 13 | 88.3°F |
| July 17 | 88.0°F | July 12 | 88.5°F |
Monthly sea water temperature, °F
When is the warmest sea in Key Largo?
Based on the data about daily sea water temperature for the last three years the warmest sea in Key Largo was noticed in August, July and September.
Monthly Sea Temperatures in Key Largo, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 88.7°F. The highest and lowest sea temperatures during the month were 90.1°F and 86.9°F.
Sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 88.4°F. The highest and lowest sea temperatures during the month were 89.8°F and 87.3°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 86.6°F. The highest and lowest sea temperatures during the month were 88.5°F and 85.5°F.
current
weather
weather
| Key Largo |
weather in
July
July
| Key Largo |
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: 09:24
July 21, tuesday
1200
90°F
NW
12 mph
12 mph
1500
88°F
NW
11 mph
11 mph
1800
88°F
NW
9 mph
9 mph
2100
84°F
W
12 mph
12 mph
July 22, wednesday
0000
86°F
W
14 mph
14 mph
0300
84°F
NW
14 mph
14 mph
0600
84°F
NW
16 mph
16 mph
0900
86°F
NW
14 mph
14 mph
