The highest day temperature in August 2025 was 97°F. The lowest night temperature was 48°F. The average values for day and night temperatures during August were 82.5°F и 65.4°F respectivly.

The average sea surface temperature in August 2025 for South Haven was 74.3°F. The maximum and minimum values were 67.2°F and 80.2°F respectively.

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

Precipitation total in August for South Haven is 1.0 in.

The average wind speed in August is 8.6 mph. It makes August one of the most windless months of the year for South Haven.

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 South Haven in August is 9.3 hours.