Winter (December to February)
Sharp cold with highs around -0° and lows near -4°, regular rain (13 rainy days per month on average). Not an ideal time for a leisure trip.
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Climate · 10-year averages
When to visit Helsinki?
Best time to visit Helsinki: from June to August. Month-by-month temperatures, rainfall and sunshine, based on ten years of weather data.
Best time to go
From June to August
Hottest month
July · 21°
Coldest month
January · -5°
Wettest month
August · 90 mm
Climate month by month
Bars: monthly rainfall. Lines: average highs and lows. Month color: our travel comfort index.
- JanuaryÀ éviter
-1° / -5°
- Rain
- 67 mm · 14 d
- Sunshine
- 1.3 h/day
- Humidity
- 86%
- FebruaryÀ éviter
-0° / -5°
- Rain
- 59 mm · 12 d
- Sunshine
- 3.4 h/day
- Humidity
- 86%
- MarchÀ éviter
2° / -3°
- Rain
- 44 mm · 10 d
- Sunshine
- 6.9 h/day
- Humidity
- 82%
- AprilÀ éviter
8° / 0°
- Rain
- 38 mm · 9 d
- Sunshine
- 10.5 h/day
- Humidity
- 74%
- MayCorrect
13° / 6°
- Rain
- 56 mm · 10 d
- Sunshine
- 12.6 h/day
- Humidity
- 71%
- JuneTrès bien
18° / 11°
- Rain
- 62 mm · 11 d
- Sunshine
- 14.3 h/day
- Humidity
- 71%
- JulyTrès bien
21° / 14°
- Rain
- 75 mm · 13 d
- Sunshine
- 13.6 h/day
- Humidity
- 75%
- AugustTrès bien
20° / 14°
- Rain
- 90 mm · 13 d
- Sunshine
- 11.1 h/day
- Humidity
- 79%
- SeptemberCorrect
15° / 10°
- Rain
- 63 mm · 11 d
- Sunshine
- 8.3 h/day
- Humidity
- 81%
- OctoberÀ éviter
9° / 5°
- Rain
- 76 mm · 13 d
- Sunshine
- 4.6 h/day
- Humidity
- 84%
- NovemberÀ éviter
4° / 1°
- Rain
- 71 mm · 14 d
- Sunshine
- 1.8 h/day
- Humidity
- 88%
- DecemberÀ éviter
1° / -3°
- Rain
- 65 mm · 14 d
- Sunshine
- 1.3 h/day
- Humidity
- 87%
2014–2023 averages from the ERA5 reanalysis (Copernicus) via Open-Meteo. A day counts as a “rainy day” from 1 mm of rain.
Our take, season by season
Spring (March to May)
Sharp cold with highs around 8° and lows near 1°, regular rain (10 rainy days per month on average). Not an ideal time for a leisure trip.
Summer (June to August)
Mild weather with highs around 20° and lows near 13°, regular rain (12 rainy days per month on average). It's a great time to go.
Fall (September to November)
Cool weather with highs around 9° and lows near 5°, regular rain (12 rainy days per month on average). Not an ideal time for a leisure trip.
Frequently asked questions
- When is the best time to visit Helsinki?
- The best time to visit Helsinki is from June to August, with highs between 18° and 21° and few rainy days.
- What is the hottest month in Helsinki?
- July is the hottest month, with an average high of 21 °C.
- What is the coldest month in Helsinki?
- January is the coldest month, with an average low of -5 °C.
- When does it rain the most in Helsinki?
- August is the wettest month (90 mm, about 13 rainy days). The driest is April (38 mm).
- When should you avoid Helsinki?
- The least favorable months are from October to April: too hot, too cold, or too rainy to make the most of your trip.
More practical info: Finland
- Country guideEverything about a country on one page: time, weather, currency, plugs, emergency numbers, tipping, visas.
- WeatherTemperature, rain, wind, and UV index for every capital.
- Air qualityPollution, fine particulate matter, and ozone, with a 36-hour forecast.
- Local timeLive clock, time zone, and time difference from where you are.
- Public holidaysEvery public holiday of the year, plus the next one coming up.
- Power OutletsPlug type, voltage, and whether your devices need an adapter.
- Driving SideWhich side of the road to drive on and which license you need before renting a car.
- Emergency NumbersPolice, ambulance, and fire department numbers for every country.
- TippingHow much to tip at restaurants, in taxis, and at hotels.
- Dialing CodesHow to call a country from abroad.
- Salat TimesFajr, Dhuhr, Asr, Maghrib, Isha, and Imsak times in every capital.
- QiblaReal-time compass pointing to the Kaaba from your GPS location.
- Visa requirements from FranceDo you need a visa for Finland?