Weather in Helsinki in August
In an average August, Helsinki sees a daily high around 20°C and a low around 12°C, based on 1980–2026 of local climate records.
| Average high | 20°C |
|---|---|
| Typical high range | 16°C to 24°C |
| Average low | 12°C |
| Typical low range | 9°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
30°C
2010-08-08
Lowest
11°C
1981-08-25
Low
Highest
21°C
2023-08-07
Lowest
3°C
2007-08-31
Feels-like
Highest
36°C
2010-08-08
Lowest
-1°C
2007-08-31
Humidity
Highest
16.7 g/m³
2022-08-17
Lowest
5.4 g/m³
1984-08-26
Wind
Highest
39 km/h
1989-08-04
Lowest
6 km/h
1994-08-25
Gust
Highest
73 km/h
1989-08-04
Lowest
13 km/h
1994-08-25
Precip
Wettest
170 mm
1998
Driest
15 mm
2002
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