The highest day temperature in August 2026 was 88°F. The lowest night temperature was 53°F. The average values for day and night temperatures during August were 71.8°F и 55.5°F respectivly.

The average sea surface temperature in August 2026 for Whidbey Island was 60.8°F. The maximum and minimum values were 58.0°F and 63.2°F respectively.

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

Precipitation total in August for Whidbey Island is 0.6 in. It makes august one of the least rainy months of the year.

The average wind speed in August is 5.1 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 Whidbey Island in August is 9.6 hours.