Weather in Helsinki in May
In an average May, Helsinki sees a daily high around 14°C and a low around 5°C, based on 1980–2026 of local climate records.
| Average high | 14°C |
|---|---|
| Typical high range | 9°C to 21°C |
| Average low | 5°C |
| Typical low range | 1°C to 9°C |
| Average daily precipitation | 3 mm |
May records
The most extreme May on record for each metric, across 1980–2026. For rainfall, the wettest and driest are by total May accumulation.
High
Highest
27°C
1993-05-20
Lowest
4°C
1981-05-01
Low
Highest
15°C
2024-05-30
Lowest
-4°C
1999-05-03
Feels-like
Highest
28°C
2014-05-24
Lowest
-9°C
1995-05-02
Humidity
Highest
13.3 g/m³
2007-05-29
Lowest
2.6 g/m³
2000-05-12
Wind
Highest
38 km/h
2000-05-26
Lowest
6 km/h
1988-05-06
Gust
Highest
78 km/h
1995-05-14
Lowest
13 km/h
2018-05-13
Precip
Wettest
103 mm
2021
Driest
5 mm
2024
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