Climate averages 1991–2020
Kouvola weather
in August.
A mild, moderately wet month: the 2nd warmest and the joint 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a mild month in Kouvola: daytime highs average 19.8°C and nights cool to about 12.9°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 66 mm of rain on roughly 11 days, which makes August a moderately wet month (the joint 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 15 h 48 min on an average August day.
The nearest other city in this atlas is Lahti (58 km away). In August its highs average 19.6°C, about as warm as Kouvola, with 68 mm of rain.
Among the 13 cities listed in Finland, Kouvola ranks 3rd of 13 for the warmest August highs and 1st of 13 for the driest August (rainfall, lowest first). The mean August high of those 13 cities is 19.2°C; Kouvola is 0.6°C warmer than that mean.
From August to September, average highs fall by 5.6°C to 14.2°C, and monthly rainfall falls from 66 mm to 53 mm.
The annual picture
August 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
Kouvola climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -3.8°C-8.3°C | -8.3°C | 44 | 10.6 | 6.67 h |
| February | -3.9°C-8.8°C | -8.8°C | 40 | 9.0 | 9.09 h |
| March | 0.5°C-5.8°C | -5.8°C | 36 | 8.6 | 11.712 h |
| April | 7.3°C-0.9°C | -0.9°C | 35 | 8.9 | 14.615 h |
| May | 14.7°C5.8°C | 5.8°C | 46 | 9.8 | 17.317 h |
| June | 18.9°C11.0°C | 11.0°C | 70 | 11.8 | 19.019 h |
| July | 21.5°C14.1°C | 14.1°C | 66 | 11.5 | 18.318 h |
| August, selected | 19.8°C12.9°C | 12.9°C | 66 | 10.9 | 15.816 h |
| September | 14.2°C8.4°C | 8.4°C | 53 | 9.9 | 13.013 h |
| October | 7.0°C2.9°C | 2.9°C | 57 | 10.9 | 10.110 h |
| November | 1.7°C-1.5°C | -1.5°C | 53 | 11.3 | 7.47 h |
| December | -1.6°C-5.5°C | -5.5°C | 54 | 11.7 | 5.86 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
August in nearby cities
- Lahti in AugustFinland · 58 kmHigh 19.6°C · Low 12.9°C · 68 mm rain
- Lappeenranta in AugustFinland · 83 kmHigh 19.6°C · Low 13.1°C · 75 mm rain
- Vantaa in AugustFinland · 111 kmHigh 20.3°C · Low 13.3°C · 76 mm rain
- Vyborg in AugustRussia · 113 kmHigh 19.6°C · Low 13.6°C · 71 mm rain
- Helsinki in AugustFinland · 124 kmHigh 19.6°C · Low 13.9°C · 76 mm rain
- Espoo in AugustFinland · 134 kmHigh 19.5°C · Low 14.1°C · 70 mm rain
- Jyväskylä in AugustFinland · 161 kmHigh 18.8°C · Low 12.7°C · 72 mm rain
- Tampere in AugustFinland · 171 kmHigh 19.1°C · Low 13.2°C · 75 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 Kouvola) is explained once on the Kouvola year overview and on the Sources, method and limits page.