What to Wear in Helsinki in September
Cooling autumn. Expect 8°–15°C with 10 rainy days on average.
☀️
High
15°C
🌙
Low
8°C
🌧️
Rain days
10
🌡️
Feel
Rainy Day
Typical outfit
~12°C average
About September in Helsinki
September in Helsinki typically brings cooling autumn. With averages of 8°–15°C, the conditions call for rain is in the forecast — waterproof layers are your best friend today.
Dress in waterproof layers rather than one very thick coat. You'll warm up walking and cool down in buildings.
September in other cities