What October feels like in Helsinki
October is mid-autumn in Helsinki. The daytime air has a chill to it, though it is rarely bitter. There is little difference between day and night: nights are cold, and evenings feel much like the afternoon. The air is damp, which makes cool temperatures feel colder, particularly in wind.
Rain in Helsinki in October
Expect a mix of dry and wet days, with rain about one day in 3. Each rainy day adds about 6.2 mm (0.2 in), a proper wetting rather than a sprinkle. The yearly figure is similar, around 5.2 mm per wet day. It is among the three wettest months of the year.
Daylight and sunshine in October
On 15 October the sun rises at about 7:57 am and sets around 6:14 pm local time, giving 10 h 17 min of daylight. Evenings are drawing in — 2 h 43 min less daylight than mid-September. The sun is out for roughly 47% of those daylight hours, so sun and cloud share the day.
How October compares to the rest of the year
October is the 6th warmest month of the year in Helsinki. Afternoons run 6.3°C (11.3°F) cooler than in September, with 6 mm more rain. The cooling trend carries on into November. The next month's average high: 4.3°C (39.7°F).
Who October suits
- Sightseeing: less ideal — it is cold for long walks.
- Parks & outdoor: less ideal — too cool to sit outside for long.
- Beach: less ideal — the sea air is too cool.
Tips for visiting Helsinki in October
Rain Protection
Keep a small umbrella in your bag and wear shoes that cope with puddles.
Warm Layers
A warm jacket, a hat and gloves for cold mornings and evenings.
Quick questions
How warm is Helsinki in October?
It feels chilly: typical highs are 8.9°C (48°F), with lows near 5°C (41°F).
Does it rain a lot in Helsinki in October?
It does: about 12 rainy days bring roughly 74 mm, so plan some indoor options.
What should I wear in Helsinki in October?
Based on the averages: rain protection and warm layers. There is little need to change for the evening.
Is October or November better for visiting Helsinki?
October, clearly: it ranks #7 of 12 among Helsinki's months, against #10 for the other. November is cooler and has more rainy days.