Helsinki weather in April
Temperature, sea and sunshine in April: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in April
Poor
Best time to visit: June – August
What is the weather like in Helsinki in April?
In April, Helsinki is cold: daytime highs average 7 °C, and nights cool down to about 0 °C. The sea averages 2.3 °C – swimming is only for the hardy. The sun shines for around 8 hours a day. Rain falls on about 9 days, adding up to 38 mm. Snow falls on about 2 days. All in all, April is not an ideal month for a holiday in Helsinki.
April compared
How the weather changes from March to May. Tap a month to open it.
More details for April
- Daylight
- 14 h 30 min06:06 – 20:35
- UV index
- 3 · moderateclear sky, noon (estimate)
- Muggy days
- 0 daysdew point 18 °C or more
- Wind
- 18 km/haverage daily peak
- Cloud cover
- 62 %on average
- Hot days
- 0 days30 °C or more
- Snow days
- 2 days1 cm or more of fresh snow
- Time zone
- UTC+3Europe/Helsinki
How the score comes together
- Temperatureweight 50 %0 %
- Sunshineweight 20 %77 %
- Few rainy daysweight 30 %67 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in April
- Sunscreen
- Warm jacket
- Rain jacket or umbrella
Helsinki in April: quick answers
Is Helsinki hot in April?
No. In April, Helsinki is cold: daytime highs average 7 °C and nights drop to about 0 °C.
Can you swim in Helsinki in April?
Only if you don't mind cold water: in April the sea averages just 2.3 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Helsinki in April?
Rain falls on about 9 days, adding up to 38 mm.
Helsinki month by month
The whole year in HelsinkiAll destinations: Finland
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, GeoNames (CC BY 4.0)