Helsinki weather in June
Temperature, sea and sunshine in June: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in June
Excellent
Best time to visit: June – August
What is the weather like in Helsinki in June?
In June, Helsinki is mild: daytime highs average 18 °C, and nights cool down to about 11 °C. The sea averages 12.0 °C – swimming is only for the hardy. With around 9 hours of sunshine a day, there is plenty of sun. Rain is frequent, with about 12 rainy days and 73 mm in total. All in all, June is an excellent month for a holiday in Helsinki.
June compared
How the weather changes from May to July. Tap a month to open it.
More details for June
- Daylight
- 18 h 52 min03:54 – 22:46
- UV index
- 6 · highclear sky, noon (estimate)
- Muggy days
- 0 daysdew point 18 °C or more
- Wind
- 18 km/haverage daily peak
- Cloud cover
- 58 %on average
- Hot days
- 0 days30 °C or more
- Snow days
- 0 days1 cm or more of fresh snow
- Time zone
- UTC+3Europe/Helsinki
How the score comes together
- Temperatureweight 50 %99 %
- Sunshineweight 20 %100 %
- Few rainy daysweight 30 %46 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in June
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
- Rain jacket or umbrella
Helsinki in June: quick answers
Is Helsinki hot in June?
No. In June, Helsinki is mild: daytime highs average 18 °C and nights drop to about 11 °C.
Can you swim in Helsinki in June?
Only if you don't mind cold water: in June the sea averages just 12.0 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Helsinki in June?
Rain is frequent, with about 12 rainy days and 73 mm in total.
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)