Oulu Climate by Month
Oulu, North Ostrobothnia, Finland
Mild summers and freezing winters, with rain spread through the year.
Mild summers and freezing winters, with rain spread through the year: that's Oulu's climate in short. Afternoon highs range from 24°F (-5°C) in January to 70°F (21°C) in July, and February nights average 10°F (-12°C). About 21 in (532 mm) of rain falls in a typical year, with no clear rainy season. The air is humid, averaging 83% relative humidity.
- Warmest month
- 70°F(21°C)
- Average high, July
- Coldest nights
- 10°F(-12°C)
- Average low, February
- Rain per year
- 21 in(532 mm)
- No clear rainy season
- Humidity
- 83%
- Sunniest: June
Best and worst months in Oulu
Best for weatherJuly is the best time for weather in Oulu: highs near 70°F (21°C) and about 2.8 in (71 mm) of rain a month.
Least pleasantJanuary and February are the least pleasant; January is the coldest, with highs of only 24°F (-5°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in July.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Oulu weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 24°F(-5°C) | 11°F(-12°C) | 1.4 in(36 mm) | 92% | 0.1 |
| FebFebruary | 24°F(-5°C) | 10°F(-12°C) | 1.2 in(30 mm) | 93% | 0.6 |
| MarMarch | 31°F(0°C) | 17°F(-8°C) | 1.1 in(29 mm) | 90% | 1.9 |
| AprApril | 42°F(6°C) | 28°F(-2°C) | 0.9 in(24 mm) | 72% | 3.5 |
| MayMay | 54°F(12°C) | 38°F(3°C) | 1.5 in(39 mm) | 67% | 4.8 |
| JunJune | 65°F(18°C) | 49°F(9°C) | 2.1 in(54 mm) | 64% | 5.4 |
| JulJulyBest | 70°F(21°C) | 54°F(12°C) | 2.8 in(71 mm) | 73% | 5.0 |
| AugAugust | 66°F(19°C) | 51°F(10°C) | 2.5 in(63 mm) | 78% | 3.7 |
| SepSeptember | 56°F(13°C) | 42°F(6°C) | 1.9 in(48 mm) | 84% | 2.0 |
| OctOctober | 43°F(6°C) | 33°F(1°C) | 2.0 in(51 mm) | 90% | 0.7 |
| NovNovember | 33°F(1°C) | 25°F(-4°C) | 1.8 in(45 mm) | 93% | 0.2 |
| DecDecember | 28°F(-2°C) | 17°F(-8°C) | 1.7 in(42 mm) | 98% | 0.1 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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