Current sea water temperature:
+44.8°F
| Minimum sea water temperature in December: | 54.3°F |
| Maximum sea water temperature in December: | 43.2°F |
| Average sea water temperature in December: | 48.9°F |
| more information | |
14 days
forecast
forecast
| Montauk |
monthly
weather
weather
| Montauk |
Sea water temperature for the last 10 days:
| December 18 | 44.8°F | December 13 | 45.9°F |
| December 17 | 45.7°F | December 12 | 47.5°F |
| December 16 | 44.2°F | December 11 | 48.7°F |
| December 15 | 45.7°F | December 10 | 49.1°F |
| December 14 | 46.4°F | December 9 | 49.1°F |
Monthly sea water temperature, °F
When is the warmest sea in Montauk?
Based on the data about daily sea water temperature for the last three years the warmest sea in Montauk was noticed in August, September and July.
Monthly Sea Temperatures in Montauk, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 70.0°F. The highest and lowest sea temperatures during the month were 71.6°F and 68.5°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 68.7°F. The highest and lowest sea temperatures during the month were 70.2°F and 67.6°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 68.9°F. The highest and lowest sea temperatures during the month were 71.6°F and 64.6°F.
current
weather
weather
| Montauk |
weather in
December
December
| Montauk |
Best time for vacation in Montauk
Montauk on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Montauk
Local time: 03:15
December 18, thursday
0600
36°F
E
5 mph
5 mph
0900
39°F
NW
2 mph
2 mph
1200
45°F
N
9 mph
9 mph
1500
46°F
N
14 mph
14 mph
1800
46°F
N
14 mph
14 mph
2100
46°F
N
19 mph
19 mph
December 19, friday
0000
48°F
N
22 mph
22 mph
0300
48°F
N
25 mph
25 mph
