Measurements:
°C
°F
Montauk
46°F
SE 9 mph
Feels like: 40°F
Precip: 0%
World Resorts USA Montauk Weather

Montauk Sea Water Temperature

Current Sea Water Temperature:
+37.4°F
Maximum Sea Water Temperature in January: 47.4°F
Minimum Sea Water Temperature in January: 36.8°F
Average water temperature in January: 42.3°F

Sea Water Temperature for the Last 10 Days:

January 08 37.4°F January 03 39.8°F
January 07 39.6°F January 02 39.8°F
January 06 39.6°F January 01 40.6°F
January 05 40.0°F December 31 41.2°F
January 04 40.0°F December 30 41.0°F

When is the Warmest Sea for Montauk?

According to our data for the last three years for Montauk the highest average sea water temperature was in August, September and July.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Montauk was 72.2°F. The maximum and minimum values were 70.6°F and 74.0°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Montauk was 70.8°F. The maximum and minimum values were 69.6°F and 72.4°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Montauk was 71.0°F. The maximum and minimum values were 66.2°F and 74.0°F respectively.

Best Time to Visit Montauk
The most sunny months:
November 16 days
September 14 days
December 14 days
The most warm months:
July 79.6 °F
August 78.4 °F
September 72.2 °F
Warmest sea temperature:
August 72.5 °F
September 71.0 °F
July 70.4 °F
The most cold months:
January 35.8 °F
February 36.0 °F
December 41.0 °F
The most rainy months:
October 4 days
November 3 days
March 3 days
The most windy months:
December 14 mph
January 13 mph
November 13 mph

Montauk on the Weather Map

USA Resorts:
NAME
Chicago +54
Hawaii +78
Honolulu +78
Houston +78
Las Vegas +54
Los Angeles +58
Maui +72
Miami +86
Miami Beach +80
New York +52
San Diego +64
San Francisco +52
Sarasota +82
Tampa +88
Washington +60
24 Hours Weather Forecast
Montauk
Local time: 15:31
08 jan, thursday
1800 42°F
SE
8 mph
2100 38°F
SE
6 mph
09 jan, friday
0000 36°F
E
4 mph
0300 38°F
NE
5 mph
0600 38°F
N
5 mph
0900 40°F
N
9 mph
1200 40°F
N
14 mph
1500 40°F
N
15 mph