Best Time to Visit Helsinki
Helsinki is best visited January and March to November, when conditions are at their most settled.
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Average daily high and low temperatures (°C/°F). Bars show the daily range each month.
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| Month | High | Low | Rain | Sun/day | Rainy days | Rating |
|---|---|---|---|---|---|---|
| January Best | 0.4°C | -3.8°C | 84.4mm | 1.4h | 16 | 8/10 |
| February | -0.1°C | -5.2°C | 67.8mm | 3.4h | 11 | 6/10 |
| March Best | 2.2°C | -3.6°C | 51.7mm | 7.2h | 10 | 8/10 |
| April Best | 7.3°C | -0.1°C | 36.3mm | 10.9h | 8 | 10/10 |
| May Best | 12.7°C | 4.9°C | 62.7mm | 12.3h | 10 | 10/10 |
| June Best | 20.2°C | 12.3°C | 52.6mm | 15.6h | 8 | 10/10 |
| July Best | 20.8°C | 14.1°C | 78.5mm | 14.1h | 13 | 10/10 |
| August Best | 19.9°C | 13.8°C | 104.2mm | 10.7h | 14 | 9/10 |
| September Best | 14.9°C | 9.6°C | 58.7mm | 8.4h | 10 | 10/10 |
| October Best | 9.8°C | 5.5°C | 91.5mm | 5.0h | 14 | 10/10 |
| November Best | 4.4°C | 0.8°C | 73.6mm | 1.9h | 14 | 8/10 |
| December | -0.5°C | -4.6°C | 68.0mm | 1.0h | 14 | 6/10 |
Helsinki Climate
Helsinki has a continental climate — hot summers, cold winters and moderate rainfall. Check the annual climate overview for Helsinki for the full year picture.
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Frequently Asked Questions
What is the best month to visit Helsinki?
The best month to visit Helsinki is January, when temperatures average 0.4°C and conditions score 8/10 for comfort.
What is the weather like in Helsinki in January?
Helsinki in January is very cold — daytime temperatures average 0.4°C, dropping to -3.8°C at night. The month is fairly wet (16 rainy days on average), with roughly 1.4 hours of sunshine a day. Weather-wise, this is one of the most reliable months to travel.
When is rainy season in Helsinki?
Helsinki does not have a distinct rainy season — rainfall is spread relatively evenly through the year.
Is Helsinki good to visit in winter?
Yes — winter (December, January, February) averages 0.4°C highs with a 8/10 comfort rating, making it a solid time to visit.
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Climate data sourced from Open-Meteo (open source, open data licence). Monthly averages calculated from 2020–2023 historical data. Weather can be unpredictable — always check a live forecast before travelling.