Helsinki, FinlandQuick decision
When to visit Helsinki?
🌞 Best time overall
June
🌡️ Optimal temperature
12°C–19°C in June
🌧 Least rain
35% rainy days in June
🌧 Wettest month
January (47%)
📅 Best score
7.6/10
By trip type
Best time by type of trip
SaunasYear-round — Löyly, Allas Sea Pool and traditional public saunas.
Design & ArchitectureYear-round — Design District, Oodi Library and Suomenlinna.
ArchipelagoJune–August — islands by ferry, swimming and kayaking.
Christmas & SnowDecember — markets, illuminated white cathedral and Lapland excursion.
Monthly climate data
Helsinki weather month by month
| Month | Min °C | Max °C | Rainy days (%) | Precip. mm/d | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌨️ January | -4°C | 0°C | 47% | 2.2 | 0.1h | 1.0/10 |
| 🌨️ February | -4°C | 1°C | 40% | 2.1 | 3.0h | 2.1/10 |
| 🌨️ March | -3°C | 2°C | 33% | 1.4 | 7.7h | 4.1/10 |
| 🌫️ April | 0°C | 7°C | 34% | 1.6 | 11.6h | 5.1/10 |
| ⛅ May | 6°C | 13°C | 29% | 1.5 | 15.0h | 7.1/10 |
| 🌤️ June | 12°C | 19°C | 35% | 2.0 | 16.6h | 7.6/10 |
| 🌤️ July | 14°C | 20°C | 41% | 2.5 | 15.1h | 7.6/10 |
| 🌤️ August | 14°C | 20°C | 44% | 2.8 | 12.5h | 7.3/10 |
| ⛅ September | 11°C | 16°C | 37% | 2.4 | 8.9h | 7.0/10 |
| 🌦️ October | 5°C | 10°C | 46% | 2.8 | 4.4h | 3.8/10 |
| 🌦️ November | 1°C | 5°C | 47% | 2.6 | 0.4h | 1.0/10 |
| 🌨️ December | -2°C | 2°C | 46% | 2.2 | 0.0h | 1.0/10 |
Ideal
Fair
Challenging climate
Source: Open-Meteo · 10 years
Seasonal breakdown
What to expect each season
🌸 Spring (Mar–May) — Challenging climate
Average 7°C, 32% rainy days, 11.4h sunshine/day. Score: 5.4/10.
☀️ Summer (Jun–Aug) — Good time
Average 20°C, 40% rainy days, 14.7h sunshine/day. Score: 7.5/10.
🍂 Autumn (Sep–Nov) — Challenging climate
Average 10°C, 43% rainy days, 4.6h sunshine/day. Score: 3.9/10.
❄️ Winter (Dec–Feb) — Challenging climate
Average 1°C, 44% rainy days, 1.0h sunshine/day. Score: 1.4/10.
Accommodation
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Check availability during the recommended period
Tip : off-peak months (January, February) are cheapest but weather is significantly worse.
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Activities and tours in Helsinki
Guided tours, skip-the-line tickets and local experiences.
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Flights
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Monthly weather
Detailed weather by month
FAQ
Frequently asked questions
June is ideal with 35% rainy days and 19°C. The months of June & July offer comparable conditions.
January is the wettest month with 47% rainy days.
Yes, June is the best month with an average of 19°C.
In winter, the average score is 1.4/10. Difficult period — prefer the peak season.
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