The highest day temperature in August 2025 was 69°F. The lowest night temperature was 42°F. The average values for day and night temperatures during August were 57.3°F и 48.3°F respectivly.

The average sea surface temperature in August 2025 for Adelaide was 55.8°F. The maximum and minimum values were 54.8°F and 56.4°F respectively.

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

Precipitation total in August for Adelaide is 2.9 in. It makes august the most rainy month of the year.

The average wind speed in August is 9.8 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 Adelaide in August is 6.3 hours.