The month in detail
What to expect in October
Autumn marks the end of peak season in Helsinki. Temperatures drop (10°C) and rain returns (39% of days). Expect rain on 39% of days — a light raincoat in the bag is recommended.
October ranks 7 out of 12 months in Helsinki. Compared to September: −6°C daytime, 6 pts more rainy days, −2.0h of sun per day.
This month's conditions
What it's like in October
UV index
1 · low
no protection needed
Feels like
dry air
4°
Sea
10°C
cold, for the brave
Daylight
9.7h of daylight
Air quality
good
AQI 21
Compare
Is October the right month?
The best month in Helsinki is June (7.7/10), 6.6 pts higher than October.
Book
Plan your trip
Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.
Stay
Hotels & rentals · Helsinki
Expedia →
Activities
Tours, tickets, experiences
See ↓
Flights
Multi-airline comparator
Kiwi →
🎟️ Activities & tours · Helsinki
GetYourGuide selection · free cancellation
Practical info
What you need to know before you go
Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a subarctic stay.
Country · Finland
🗣️LanguageFinnish
💶CurrencyEuro (€)
🚗DrivingRight-hand
🛡️Safety ⓘVery safe · 1/5
💰Cost of living ⓘExpensive · 4/5
🌡️ Climate
🌍Climate typeSubarctic oceanic
📈Climate trend ⓘStable
🔥Hottest monthJuly · 20°C
❄️Coolest monthJanuary · 0°C
🌧️Rainiest month ⓘOctober · 39%
🌌 Subarctic stay
🌌Northern lights ⓘSept → Mars
☀️Midnight sun ⓘJuin (~21h)
🌬️WindVery frequent
🛂VisaSchengen · 90 days
Explore
Other destinations in October
If October doesn't convince you for this destination, compare with others.
Location
Where is Helsinki ?
Global position + regional geographic context.
🌍 World
🔍 Geographic context
FinlandSubarctic oceanic climate with a 7.7 → 0.6 gap between best and worst month. 10 years of ERA5 data to choose by project.
60.17°N · 24.94°E
Questions
Frequently asked questions
What is the best time to visit Helsinki?
June is the best month with 19.0°C highs, 12.0°C lows, 9.9h of sunshine and 31.0% rainy days. The months of June & July offer comparable conditions.
How many hours of sunshine does Helsinki get in June?
Helsinki averages 9.9 sunshine hours per day in June. It is the sunniest month with a climate score of 7.2/10.
What is the rainiest month in Helsinki?
January is the most unfavourable month with January has the lowest climate score of the year and the lowest climate score of the year.
What are the temperatures at night in Helsinki in June?
In June, overnight lows reach 12.0°C, while afternoon highs average 19.0°C.
Is Helsinki good in winter?
In winter (December-February), Helsinki scores 0.7/10 on average — Difficult period — prefer the peak season.. The best month overall remains June with a score of 7.2/10.
When should you avoid Helsinki?
January is the most difficult month to visit Helsinki, with January has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.
Can you swim in Helsinki in October?
In October, the sea averages 10°C in Helsinki: cold, for the brave. Best left to hardened swimmers or those with a wetsuit.
Do you need sun protection in Helsinki in October?
The average UV index reaches 1 in October in Helsinki (low), with about 9.7h of daylight. No protection needed.