The highest day temperature in August 2025 was 99°F. The lowest night temperature was 51°F. The average values for day and night temperatures during August were 82.0°F и 64.6°F respectivly.

The average sea surface temperature in August 2025 for Rochester was 76.1°F. The maximum and minimum values were 72.0°F and 79.2°F respectively.

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

Precipitation total in August for Rochester is 1.3 in. It makes august the most rainy month of the year.

The average wind speed in August is 7.0 mph. It makes August the most windless month of the year for Rochester.

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 Rochester in August is 7.7 hours.