Weather in Helsinki in April 2025
Average weather
Average temperature in Helsinki in April
The temperature in April is +9°C on average, with a range between a maximum of +16°C during the day and a minimum of -6°C at night.
The average maximum temperature goes up 14% by the end of the month, compared with the beginning of the month, from +3°C to +6°C.
Is Helsinki warm or cold in April?
Helsinki is typically cool in April.
Maximum temperatures go up compared to the previous month from +1°C to +6°C. The minimum temperature also goes up from -5°C to 0°C.
Pack a sweater and a jacket as there will be cooler temperatures.
Take a look at how April is compared to other months in Helsinki:
Water temperature in Helsinki in April
Water in Helsinki in April is Cold. It varies from -1°C to +2°C, with an average of +1°C. The air temperature averaging +6°C is higher than the water temperature.
The water temperature in April is one of the coldest of the entire year:
Can you swim in Helsinki in April?
Climate in Helsinki in April
| March | April | May | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +1°C | +6°C | +12°C | ||||
| Min. temperature | ||||||
| -19°C | -10°C | -2°C | ||||
| Max. temperature | ||||||
| +13°C | +19°C | +26°C | ||||
| Rainfall | ||||||
| 10 mm | 24 mm | 42 mm | ||||
| Wind | ||||||
| 4 m/s | 4 m/s | 4 m/s | ||||
| Avg. water temperature | ||||||
| 0°C | +1°C | +4°C | ||||
| Humidity | ||||||
| 79% | 72% | 68% | ||||
| Air pressure | ||||||
| 1011 HPa | 1012 HPa | 1013 HPa | ||||
| Sunny days | ||||||
| 7 | 9 | 12 | ||||
| Cloudy days | ||||||
| 10 | 9 | 7 | ||||
| Rainy days | ||||||
| 2 | 7 | 11 | ||||
| Snowy days | ||||||
| 11 | 5 | 0 | ||||
April often has better weather than March. It’s getting warmer as April arrives. The average maximum temperature goes up from +1°C to +6°C during the day. Prepare for more rain. Average rainfall goes from 10 mm to 24 mm. It feels drier, as humidity decreases from 79% to 72%. The average wind speed doesn’t change much during April, staying around 4 m/s. The good news is there are likely to be more sunny days in April, from 7 to 9.
May brings much the same weather, it remains good.
Wind
The average wind speed is 5 m/s getting up to 11 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Helsinki is gradually increasing during April, going from 5 m/s to 8 m/s over the course of the month.
Rain
Snow
Here’s how April is compared with other months in the amount of snow, total mm:
How was the weather last April in Helsinki?
Climate Change over Years
The climate in Helsinki in April has not changed much over the last 43 years.
The average temperature was the lowest in 1987 (+5°C) and the highest in 2020 (+11°C). The driest year was 2002 with only 248 mm of rainfall, and the wettest year was 2020 with 1153 mm.
FAQ
Is April a good time to visit Helsinki?
Can you sunbathe in Helsinki in April?
Can you swim in Helsinki in April?
Is Helsinki rainy in April?
Is it sunny in Helsinki in April?
Other cities in Finland
Monthly weather in Helsinki
Source of the data
For this page, we’ve looked at the typical weather in Helsinki, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.