Weather in Helsinki in August
In an average August, Helsinki sees a daily high around 20°C and a low around 11°C, based on 1980–2026 of local climate records.
| Average high | 20°C |
|---|---|
| Typical high range | 16°C to 25°C |
| Average low | 11°C |
| Typical low range | 8°C to 15°C |
| Average daily precipitation | 3 mm |
August records
The most extreme August on record for each metric, across 1980–2026. For rainfall, the wettest and driest are by total August accumulation.
High
Highest
31°C
1992-08-11
Lowest
10°C
1986-08-28
Low
Highest
20°C
2023-08-07
Lowest
2°C
2007-08-31
Feels-like
Highest
38°C
1992-08-11
Lowest
-1°C
2007-08-31
Humidity
Highest
17.0 g/m³
2022-08-17
Lowest
5.0 g/m³
1984-08-26
Wind
Highest
35 km/h
1989-08-04
Lowest
5 km/h
1987-08-04
Gust
Highest
78 km/h
1989-08-04
Lowest
13 km/h
1985-08-17
Precip
Wettest
155 mm
2005
Driest
13 mm
2002
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