The highest day temperature in August 2023 was 81°F. The lowest night temperature was 56°F. The average values for day and night temperatures during August were 68.2°F и 61.0°F respectivly.

The average sea surface temperature in August 2023 for Helsinki was 64.3°F. The maximum and minimum values were 56.8°F and 68.0°F respectively.

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

Precipitation total in August for Helsinki is 2.4 in. It makes august the most rainy month of the year.

The average wind speed in August is 9.6 mph.

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 Helsinki in August is 9.6 hours.