The highest day temperature in August 2025 was 96°F. The lowest night temperature was 54°F. The average values for day and night temperatures during August were 82.1°F и 63.8°F respectivly.

The average sea surface temperature in August 2025 for Bristol was 75.8°F. The maximum and minimum values were 72.2°F and 80.0°F respectively.

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

Precipitation total in August for Bristol is 1.0 in. This value is relatively stable throughout the year.

The average wind speed in August is 6.7 mph. This value is relatively stable throughout the year.

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 Bristol in August is 7.8 hours.