Helsinki Weather in May
In May, Helsinki averages a high of 14°C (58°F) and a low of 7°C (44°F), based on 56 years of historical weather data from HELSINKI RAUTATIENTORI.
14°C
Average high
58°F
7°C
Average low
44°F
28°C
Record high
82°F · 2018
-3°C
Record low
26°F · 1999
What to Expect in Helsinki in May
Typical May days in Helsinki reach 14°C (58°F) during the afternoon and cool to around 7°C (44°F) overnight. On average, measurable rain falls on about 34% of days this month. Over the past 56 years, May temperatures in Helsinki have ranged from a record high of 28°C (2018) down to a record low of -3°C (1999).
For a day-by-day look or other months, see the full Helsinki weather history.