Helsinki Weather in August

What's the weather like in Helsinki, Finland in August?

The climate in Helsinki during August can be summarized as mild and reasonably dry.

August is in the summer in Helsinki and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around 19°C (65°F), whilst at night 12°C (53°F) is normal.

Helsinki weather averages (imperial / metric)
Daytime temperature 18.6°C 65.4°F
Nightly temperature 11.9°C 53.3°F
Average temperature 15.2°C 59.4°F
Daily sunshine 6.9 hrs
Avg rainfall 75 mm 2.9 ins
Rainy days 14 days
Sea temperature 16.9°C 62.4°F
Humidity 81%
Windspeed 15.1kph 9 mph

On average August is the wettest month of the year in Helsinki with around 75mm 2.9 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 14 days, although this may vary considerably.

On the flip side this corresponds to an average of 6.9 hours of sunshine per day.

August temperatures in Helsinki

August rainfall

August hourly sunshine

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in August 2018.

Other monthly averages

Helsinki weather stats

Helsinki weather statistics
Hottest month: July 19.5°C 67.1°F
Driest month: February 25mm 1ins
Sunniest month: June 10.7hrs
Coldest month: February -2.7°C 27.1°F
Wettest month: August 75mm 3ins
Map showing location of Helsinki (60.60778, 21.4381)

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