Climate averages 1991–2020
Helsinki weather
in June.
A mild, moderately wet month: the 3rd warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
June is a mild month in Helsinki: daytime highs average 17.3°C and nights cool to about 10.8°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 72 mm of rain on roughly 12 days, which makes June a moderately wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 18 h 46 min on an average June day.
The nearest other city in this atlas is Vantaa (15 km away). In June its highs average 19.0°C, 1.7°C warmer than Helsinki, with 72 mm of rain.
Among the 13 cities listed in Finland, Helsinki ranks 9th of 13 for the warmest June highs and joint 7th of 13 for the driest June (rainfall, lowest first). The mean June high of those 13 cities is 17.8°C; Helsinki is 0.5°C cooler than that mean.
From June to July, average highs rise by 3.5°C to 20.8°C, and monthly rainfall rises from 72 mm to 76 mm.
The annual picture
June in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Helsinki climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -2.1°C-6.0°C | -6.0°C | 48 | 10.9 | 6.87 h |
| February | -2.9°C-7.1°C | -7.1°C | 41 | 9.3 | 9.19 h |
| March | 0.7°C-4.6°C | -4.6°C | 37 | 8.5 | 11.712 h |
| April | 6.9°C0.3°C | 0.3°C | 37 | 8.7 | 14.515 h |
| May | 13.1°C6.0°C | 6.0°C | 44 | 8.9 | 17.217 h |
| June, selected | 17.3°C10.8°C | 10.8°C | 72 | 11.7 | 18.819 h |
| July | 20.8°C14.6°C | 14.6°C | 76 | 11.9 | 18.118 h |
| August | 19.6°C13.9°C | 13.9°C | 76 | 12.3 | 15.716 h |
| September | 14.6°C9.8°C | 9.8°C | 57 | 10.4 | 13.013 h |
| October | 8.1°C4.4°C | 4.4°C | 59 | 11.1 | 10.210 h |
| November | 3.3°C0.3°C | 0.3°C | 59 | 11.5 | 7.68 h |
| December | 0.1°C-3.2°C | -3.2°C | 55 | 12.2 | 6.06 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
June in nearby cities
- Vantaa in JuneFinland · 15 kmHigh 19.0°C · Low 10.9°C · 72 mm rain
- Espoo in JuneFinland · 16 kmHigh 17.1°C · Low 11.0°C · 66 mm rain
- Tallinn in JuneEstonia · 82 kmHigh 18.6°C · Low 11.0°C · 70 mm rain
- Lahti in JuneFinland · 99 kmHigh 18.6°C · Low 10.8°C · 75 mm rain
- Kouvola in JuneFinland · 124 kmHigh 18.9°C · Low 11.0°C · 70 mm rain
- Turku in JuneFinland · 150 kmHigh 18.5°C · Low 10.2°C · 68 mm rain
- Tampere in JuneFinland · 160 kmHigh 18.0°C · Low 10.7°C · 75 mm rain
- Lappeenranta in JuneFinland · 203 kmHigh 18.8°C · Low 11.0°C · 66 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Helsinki) is explained once on the Helsinki year overview and on the Sources, method and limits page.
Vantaa lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.