The highest day temperature in October 2025 was 78°F. The lowest night temperature was 45°F. The average values for day and night temperatures during October were 63.8°F и 56.6°F respectivly.

The average sea surface temperature in October 2025 for Montauk was 66.3°F. The maximum and minimum values were 61.2°F and 71.4°F respectively.

Most of the days in October are sunny but you can also expect cloudy and gloomy days.

Precipitation total in October for Montauk is 1.4 in. It makes october the most rainy month of the year.

The average wind speed in October is 11.8 mph.

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 October is 6.7 hours.