Weather · Helsinki, Finland
Helsinki Weather in September
Helsinki in September runs 15°C / 9°C with 52mm of rain, a reasonable time to visit.
Avg high
15°C
59°F
Avg low
9°C
48°F
Rainfall
52mm
#9 wettest of 12
What to pack
Layers, plus a jacket for mornings and nights. Rain is unlikely to interrupt your plans.
Timing a trip around the weather? A Local Friend in Helsinki builds it around the season for you.