Helsinki Weather in August
In August, Helsinki averages a high of 20°C (68°F) and a low of 13°C (56°F), based on 55 years of historical weather data from HELSINKI RAUTATIENTORI.
20°C
Average high
68°F
13°C
Average low
56°F
32°C
Record high
89°F · 1975
1°C
Record low
34°F · 1998
What to Expect in Helsinki in August
Typical August days in Helsinki reach 20°C (68°F) during the afternoon and cool to around 13°C (56°F) overnight. On average, measurable rain falls on about 49% of days this month. Over the past 55 years, August temperatures in Helsinki have ranged from a record high of 32°C (1975) down to a record low of 1°C (1998).
For a day-by-day look or other months, see the full Helsinki weather history.