The highest day temperature in January 2026 was 49°F. The lowest night temperature was 9°F. The average values for day and night temperatures during January were 32.9°F и 29.0°F respectivly.

The average sea surface temperature in January 2026 for Montauk was 38.2°F. The maximum and minimum values were 35.2°F and 40.6°F respectively.

You can expect various weather conditions during January. Be ready for sunny, cloudy or even gloomy days.

Precipitation total in January for Montauk is 1.1 in. This value is relatively stable throughout the year.

The average wind speed in January is 14.2 mph. It makes January one of the most windy months of the year for Montauk.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Montauk in January is 5.3 hours.