Current sea water temperature:
+76.1°F
| Minimum sea water temperature in December: | 80.8°F |
| Maximum sea water temperature in December: | 70.0°F |
| Average sea water temperature in December: | 76.0°F |
| more information | |
14 days
forecast
forecast
| Islamorada |
monthly
weather
weather
| Islamorada |
Sea water temperature for the last 10 days:
| December 16 | 76.1°F | December 11 | 78.6°F |
| December 15 | 75.7°F | December 10 | 79.7°F |
| December 14 | 77.2°F | December 9 | 79.9°F |
| December 13 | 76.5°F | December 8 | 79.2°F |
| December 12 | 77.5°F | December 7 | 78.6°F |
Monthly sea water temperature, °F
When is the warmest sea in Islamorada?
Based on the data about daily sea water temperature for the last three years the warmest sea in Islamorada was noticed in August, July and September.
Monthly Sea Temperatures in Islamorada, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 88.8°F. The highest and lowest sea temperatures during the month were 90.5°F and 86.5°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 86.4°F. The highest and lowest sea temperatures during the month were 88.9°F and 84.7°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 86.7°F. The highest and lowest sea temperatures during the month were 88.5°F and 85.6°F.
current
weather
weather
| Islamorada |
weather in
December
December
| Islamorada |
Best time for vacation in Islamorada
Islamorada on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Islamorada
Local time: 09:17
December 16, tuesday
1200
75°F
SW
22 mph
22 mph
1500
75°F
SW
21 mph
21 mph
1800
75°F
SW
21 mph
21 mph
2100
72°F
SW
19 mph
19 mph
December 17, wednesday
0000
72°F
W
17 mph
17 mph
0300
72°F
W
16 mph
16 mph
0600
72°F
W
19 mph
19 mph
0900
73°F
W
17 mph
17 mph
