Measurements:
°C
°F
Montauk
18°F
SE 19 mph
Feels like: 4°F
Precip: 0%
World Resorts USA Montauk Weather

Montauk Sea Water Temperature

Current Sea Water Temperature:
+35.6°F
Maximum Sea Water Temperature in January: 47.4°F
Minimum Sea Water Temperature in January: 35.2°F
Average water temperature in January: 41.9°F

Sea Water Temperature for the Last 10 Days:

January 29 35.6°F January 24 36.2°F
January 28 35.8°F January 23 35.2°F
January 27 35.6°F January 22 37.4°F
January 26 36.6°F January 21 38.0°F
January 25 36.4°F January 20 38.6°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 35.3 °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 14 mph
November 13 mph

Montauk on the Weather Map

USA Resorts:
NAME
Chicago 0
Hawaii +74
Honolulu +74
Houston +38
Las Vegas +48
Los Angeles +56
Maui +68
Miami +64
Miami Beach +70
New York +12
San Diego +60
San Francisco +50
Sarasota +58
Tampa +58
Washington +12
24 Hours Weather Forecast
Montauk
Local time: 10:54
29 jan, thursday
1200 18°F
SE
19 mph
1500 18°F
SE
21 mph
1800 22°F
SE
21 mph
2100 22°F
SE
23 mph
30 jan, friday
0000 20°F
SE
20 mph
0300 18°F
SE
23 mph
0600 16°F
SE
21 mph
0900 14°F
SE
24 mph