Helsinki · May
Run in the morning.
Cool month: average high 56°F, low 43°F. Cool, runnable conditions throughout — morning still has the steadiest air and lightest wind.
Avg high / low
56° / 43°F
Humidity
71%
Rain days
14/mo
Wind
12 mph
What May feels like in Helsinki
Sunrise
04:39
Mid-month average
Sunset
21:53
Mid-month average
Time-of-day breakdown
Morning
Coolest, driest air of the day. The window before sunrise is the most reliable comfortable hour.
Midday
Mild but UV and traffic peak. Workable if you don't mind shifting your pace.
Evening
Warm and runnable. Crowded routes but the air's typically calm.
What to wear running in Helsinki in May
The kit for May in Helsinki: a long-sleeve or light jacket for the first mile, a water-resistant cap or jacket on standby.
May vs the surrounding months
vs April
+11° avg high
+2 rain days
Helsinki in April →
May
56°F avg high
14 rain days
Best: morning
vs June
-9° avg high
0 rain days
Helsinki in June →
Frequently Asked Questions
What is the best time of day to run in Helsinki in May?+
Morning. Cool, runnable conditions throughout — morning still has the steadiest air and lightest wind.
What's the average temperature in Helsinki in May?+
Average high 56°F, average low 43°F.
How does May compare to surrounding months in Helsinki?+
Compared to April (avg high 45°F), May is warmer. Compared to June (avg high 65°F), May is cooler.
Does it rain often in Helsinki in May?+
Expect about 14 measurable rain days in May, on average.