The highest day temperature in August 2026 was 93°F. The lowest night temperature was 66°F. The average values for day and night temperatures during August were 82.9°F и 71.9°F respectivly.

The average sea surface temperature in August 2026 for Montauk was 73.7°F. The maximum and minimum values were 71.6°F and 75.6°F respectively.

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

Precipitation total in August for Montauk is 1.2 in. It makes august one of the most rainy months of the year.

The average wind speed in August is 9.7 mph. It makes August one of the most windless 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 August is 8.3 hours.