Helsinki
Weather by month
Current –

Helsinki Weather in April

Helsinki in April sees low daytime temperatures of 9°C (48°F) and nighttime lows of 0°C (32°F). Moderate rainfall is typical, with around 43 mm (1.7 in) for the month.

Rainfall in Helsinki in April

On average, there are about 13 days with rain during this month, averaging 43 mm (1.7 in). Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.

Temperature in Helsinki in April

April in Helsinki brings low temperatures, with highs of 9°C (48°F) and nights around 0°C (32°F). Even at the warmest part of the day, temperatures stay low. Dressing warmly from the start is the sensible approach. With overnight lows of 0°C (32°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.

Sunshine in Helsinki in April

The month enjoys around 195 hours of sunshine, creating mostly sunny days despite the cool temperatures.

Wind Speed in Helsinki in April

Wind speeds average 4 m/s (8 knots) during April. At this speed, expect moderate winds that can raise dust and move small branches. Since this is an average, some days have gentle light winds while others experience stronger breezes that are quite noticeable.

Average water temperature in April

At 2°C (36°F), the water is too cold for most people to swim comfortably. A wetsuit is pretty much essential if you plan to go in.

If you prefer dry days with pleasant temperatures, April may not be the ideal month to visit Helsinki. Our weather planner can help you explore destinations with more pleasant weather conditions.

Helsinki Temperature in April

Min Temperature
0°C (32°F)
Max Temperature
9°C (48°F)
Water Temperature
2°C (36°F)
Chance of Rain
44%
Precipitation
43 mm (1.7 in)
Rainy days
13 days
Humidity
74%
Windspeed
4 m/s (8 knots)
Sunshine
195 hours
Percentage Sunshine

Helsinki Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Helsinki - and find the best time to visit.

Daily Historical Temperatures

50-year average (1976-2025)

Based on our historical records, temperatures in Helsinki typically rise from around 5°C (41°F) at the start of April to approximately 11°C (52°F) by the end. Nights are cold, with lows typically ranging from -2°C (28°F) to 2°C (36°F).

Average temperatures in April

Daily Historical Precipitation

50-year average (1976-2025)

Average daily rainfall for each day of the month based on long-term records.

Average precipitation in April

Historical weather records for Helsinki in April

Browse day-by-day weather records for Helsinki spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Helsinki historical weather extremes in April

Our historical data for Helsinki spans 1976 to 2026, revealing these weather extremes.

  • Helsinki recorded its highest April temperature of 23°C (73°F) on April 28, 1998.
  • On April 1, 2003, Helsinki saw its coldest April day with temperatures maxing out at -3°C (27°F).
  • The coldest night in April in Helsinki was on April 3, 1998, with a minimum of -12°C (10°F).

Best Places in Finland in April

Find out more about the weather in Finland and which places have the best travel conditions in this month. See all of Finland in April →

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

What to Wear in Helsinki in April

Dress warmly and in layers for your trip to Helsinki in April. A good base layer system works wonders. Start with good thermal underwear, add something warm like a fleece sweater, then finish with a waterproof jacket on top. Wet weather is likely, so pack waterproof gear for multiple rainy days. With water temperatures around 2°C (36°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Helsinki in April

We rated the following activities from 1 (least suitable) to 10 (best) to do.

  • Swimming
    5/10
  • Cycling
    4/10
  • Walking
    4/10
  • Camping
    5/10
  • Outdoor sports
    4/10

Helsinki 3-Day Forecast

Popular in April

Where to go in April - average daytime high across popular destinations.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.