Helsinki Weather in April
Finland · Subarctic climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
April in Helsinki sees average temperatures ranging from a low of 0.0°C (32.0°F) to a high of 7.0°C (44.6°F), with a mean of 3.6°C (38.5°F). Compared to the annual average of 6.8°C (44.2°F), this month is 3.2°C cooler than the yearly norm. Precipitation averages 46.1mm, making it approximately 23.0mm drier than the monthly average of 69.0mm. This is the driest month of the year, with just 46.1mm of precipitation. The city receives an average of 10.0 hours of sunshine per day during April, with relative humidity averaging 74.7%. Wind speeds reach an average maximum of 22.3 km/h. Snowfall averages 12.0cm during April, which can affect travel plans and outdoor activities. For travelers, this month offers a temperature experience in Helsinki, with drier-than-average conditions compared to the rest of the year.
If you're planning outdoor activities in Helsinki, daylight is the variable that matters most. I did a sea kayak tour in June at 10pm — full sun, 18°C, surreal. December gives you 6 hours of gray light, which limits everything. The Nordic summer (June-August) is the outdoor window: 18-22°C, 19 hours of daylight, perfect for island-hopping by ferry. Winter is its own adventure: -5°C, snow cover from January-March, and the sauna-ice-swim cycle is a Helsinki essential. Pack windproof layers year-round — the Baltic breeze cuts hard. September brings fall colors and fewer tourists; my favorite hiking month.
April vs Adjacent Months
| Metric | March | April | May |
|---|---|---|---|
| Mean Temp | -0.4°C (31.3°F) | 3.6°C (38.5°F) | 9.7°C (49.5°F) |
| Rainfall | 49.2mm | 46.1mm | 51.0mm |
| Sunshine | 6.8 hrs | 10.0 hrs | 12.9 hrs |
| Humidity | 83.0% | 74.7% | 68.8% |
| Wind | 23.1 km/h | 22.3 km/h | 21.3 km/h |
| Rainy Days | 10.6 | 13.2 | 13.6 |
| Snowfall | 16.9 cm | 12.0 cm | 0.7 cm |
Seasonal Context
April falls in Spring in the Northern Hemisphere. Spring is a transitional season with temperatures rising from winter lows. For travelers visiting Helsinki in April, the data indicates mixed conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Helsinki in April?
The average temperature in Helsinki during April ranges from 0.0°C (32.0°F) to 7.0°C (44.6°F), with a mean of 3.6°C (38.5°F).
How much does it rain in Helsinki in April?
Helsinki receives an average of 46.1mm of precipitation in April, spread across approximately 13.2 rainy days. This is the driest month of the year.
What should I pack for Helsinki in April?
Based on April weather data, pack heavy winter clothing, thermal layers, and a warm coat.
Is April a good time to visit Helsinki?
April is a cooler month, suitable for travelers who prefer mild weather and fewer crowds. Pack warm layers and enjoy indoor attractions.
Other Months for Helsinki
Cities with Similar April Climate (Subarctic)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 60.17°, 24.94°. Timezone: Europe/Helsinki. Last updated: 2026-07-30.