Climate averages 1991–2020
Oulu weather
in August.
A mild, moderately wet month: the 2nd warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a mild month in Oulu: daytime highs average 17.6°C and nights cool to about 12.0°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 71 mm of rain on roughly 12 days, which makes August a moderately wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 16 h 38 min on an average August day.
The nearest other city in this atlas is Luleå (167 km away). In August its highs average 16.9°C, 0.7°C cooler than Oulu, with 62 mm of rain.
Among the 13 cities listed in Finland, Oulu ranks 13th of 13 for the warmest August highs and 4th of 13 for the driest August (rainfall, lowest first). The mean August high of those 13 cities is 19.2°C; Oulu is 1.6°C cooler than that mean.
From August to September, average highs fall by 5.4°C to 12.2°C, and monthly rainfall falls from 71 mm to 56 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
Oulu climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -5.5°C-10.2°C | -10.2°C | 35 | 8.8 | 5.15 h |
| February | -6.0°C-10.6°C | -10.6°C | 29 | 8.0 | 8.38 h |
| March | -1.9°C-7.1°C | -7.1°C | 30 | 7.7 | 11.712 h |
| April | 4.0°C-2.6°C | -2.6°C | 30 | 7.4 | 15.215 h |
| May | 10.9°C3.8°C | 3.8°C | 48 | 10.0 | 18.719 h |
| June | 16.0°C9.6°C | 9.6°C | 56 | 10.0 | 21.622 h |
| July | 19.5°C13.4°C | 13.4°C | 78 | 12.1 | 20.220 h |
| August, selected | 17.6°C12.0°C | 12.0°C | 71 | 12.0 | 16.617 h |
| September | 12.2°C7.5°C | 7.5°C | 56 | 10.4 | 13.213 h |
| October | 5.0°C1.5°C | 1.5°C | 50 | 10.3 | 9.810 h |
| November | 0.3°C-3.1°C | -3.1°C | 48 | 10.6 | 6.36 h |
| December | -2.9°C-7.2°C | -7.2°C | 44 | 10.8 | 3.94 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
- Luleå in AugustSweden · 167 kmHigh 16.9°C · Low 12.7°C · 62 mm rain
- Kuopio in AugustFinland · 259 kmHigh 18.3°C · Low 12.9°C · 82 mm rain
- Umeå in AugustSweden · 282 kmHigh 17.7°C · Low 12.5°C · 75 mm rain
- Jyväskylä in AugustFinland · 308 kmHigh 18.8°C · Low 12.7°C · 72 mm rain
- Joensuu in AugustFinland · 341 kmHigh 18.1°C · Low 13.6°C · 82 mm rain
- Tampere in AugustFinland · 400 kmHigh 19.1°C · Low 13.2°C · 75 mm rain
- Pori in AugustFinland · 434 kmHigh 19.0°C · Low 13.5°C · 74 mm rain
- Lahti in AugustFinland · 448 kmHigh 19.6°C · Low 12.9°C · 68 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 Oulu) is explained once on the Oulu year overview and on the Sources, method and limits page.