Climate averages 1991–2020
Lahti weather
in June.
A mild, moderately wet month: the 3rd warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
June is a mild month in Lahti: daytime highs average 18.6°C and nights cool to about 10.8°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 75 mm of rain on roughly 12 days, which makes June a moderately wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 19 h 05 min on an average June day.
The nearest other city in this atlas is Kouvola (58 km away). In June its highs average 18.9°C, about as warm as Lahti, with 70 mm of rain.
Among the 13 cities listed in Finland, Lahti ranks 4th of 13 for the warmest June highs and joint 10th of 13 for the driest June (rainfall, lowest first). The mean June high of those 13 cities is 17.8°C; Lahti is 0.8°C warmer than that mean.
From June to July, average highs rise by 2.6°C to 21.2°C, and monthly rainfall rises from 75 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
Lahti climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -3.6°C-8.0°C | -8.0°C | 41 | 10.3 | 6.57 h |
| February | -3.7°C-8.7°C | -8.7°C | 34 | 8.2 | 9.09 h |
| March | 0.7°C-5.7°C | -5.7°C | 33 | 8.4 | 11.712 h |
| April | 7.4°C-0.6°C | -0.6°C | 35 | 8.8 | 14.615 h |
| May | 14.5°C5.6°C | 5.6°C | 48 | 10.0 | 17.417 h |
| June, selected | 18.6°C10.8°C | 10.8°C | 75 | 12.3 | 19.119 h |
| July | 21.2°C13.9°C | 13.9°C | 76 | 12.3 | 18.318 h |
| August | 19.6°C12.9°C | 12.9°C | 68 | 11.6 | 15.816 h |
| September | 14.1°C8.5°C | 8.5°C | 51 | 9.8 | 13.013 h |
| October | 7.0°C3.0°C | 3.0°C | 56 | 11.1 | 10.110 h |
| November | 1.8°C-1.3°C | -1.3°C | 50 | 10.8 | 7.47 h |
| December | -1.5°C-5.2°C | -5.2°C | 48 | 11.6 | 5.76 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
- Kouvola in JuneFinland · 58 kmHigh 18.9°C · Low 11.0°C · 70 mm rain
- Vantaa in JuneFinland · 84 kmHigh 19.0°C · Low 10.9°C · 72 mm rain
- Helsinki in JuneFinland · 99 kmHigh 17.3°C · Low 10.8°C · 72 mm rain
- Espoo in JuneFinland · 103 kmHigh 17.1°C · Low 11.0°C · 66 mm rain
- Tampere in JuneFinland · 116 kmHigh 18.0°C · Low 10.7°C · 75 mm rain
- Lappeenranta in JuneFinland · 136 kmHigh 18.8°C · Low 11.0°C · 66 mm rain
- Jyväskylä in JuneFinland · 140 kmHigh 18.0°C · Low 10.7°C · 74 mm rain
- Vyborg in JuneRussia · 170 kmHigh 18.0°C · Low 10.9°C · 62 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 Lahti) is explained once on the Lahti year overview and on the Sources, method and limits page.