Current sea water temperature:
+78.3°F
| Minimum sea water temperature in April: | 85.1°F |
| Maximum sea water temperature in April: | 73.9°F |
| Average sea water temperature in April: | 79.4°F |
| more information | |
14 days
forecast
forecast
| Key Largo |
monthly
weather
weather
| Key Largo |
Sea water temperature for the last 10 days:
| April 7 | 78.3°F | April 2 | 77.0°F |
| April 6 | 77.9°F | April 1 | 77.4°F |
| April 5 | 77.7°F | March 31 | 77.7°F |
| April 4 | 77.5°F | March 30 | 77.7°F |
| April 3 | 76.6°F | March 29 | 77.7°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:
2025
2024
2023
The average sea water temperature in July of 2025 was 86.2°F. The highest and lowest sea temperatures during the month were 89.2°F and 84.4°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
April
April
| 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: 20:54
April 07, tuesday
2100
77°F
S
16 mph
16 mph
April 08, wednesday
0000
75°F
S
13 mph
13 mph
0300
73°F
S
9 mph
9 mph
0600
73°F
S
7 mph
7 mph
0900
75°F
S
7 mph
7 mph
1200
75°F
SW
2 mph
2 mph
1500
75°F
NW
1 mph
1 mph
1800
75°F
SE
1 mph
1 mph
