Climate averages 1991–2020
Oulu weather
in April.
A cold, fairly dry month: the 7th warmest and the joint 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a cold month in Oulu: daytime highs average 4.0°C and nights cool to about -2.6°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 30 mm of rain on roughly 7 days, which makes April a fairly dry month (the joint 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 15 h 09 min on an average April day.
The nearest other city in this atlas is Luleå (167 km away). In April its highs average 2.8°C, 1.3°C cooler than Oulu, with 30 mm of rain.
Among the 13 cities listed in Finland, Oulu ranks 12th of 13 for the warmest April highs and 1st of 13 for the driest April (rainfall, lowest first). The mean April high of those 13 cities is 6.3°C; Oulu is 2.2°C cooler than that mean.
From April to May, average highs rise by 6.8°C to 10.9°C, and monthly rainfall rises from 30 mm to 48 mm.
The annual picture
April 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, selected | 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 | 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
April in nearby cities
- Luleå in AprilSweden · 167 kmHigh 2.8°C · Low -3.0°C · 30 mm rain
- Kuopio in AprilFinland · 259 kmHigh 4.1°C · Low -1.7°C · 35 mm rain
- Umeå in AprilSweden · 282 kmHigh 4.7°C · Low -1.2°C · 35 mm rain
- Jyväskylä in AprilFinland · 308 kmHigh 6.0°C · Low -1.4°C · 35 mm rain
- Joensuu in AprilFinland · 341 kmHigh 3.9°C · Low -2.0°C · 32 mm rain
- Tampere in AprilFinland · 400 kmHigh 6.3°C · Low -0.7°C · 33 mm rain
- Pori in AprilFinland · 434 kmHigh 7.0°C · Low 0.6°C · 33 mm rain
- Lahti in AprilFinland · 448 kmHigh 7.4°C · Low -0.6°C · 35 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.