In terms of precipitation, rainfall in Oulu ranges from 10.0 - 60.0 mm per month. August is typically the wettest month, when rainfall can reach 60.0 mm. April is typically the driest time to visit Oulu when rainfall is around 10.0 mm.
If weather is an important factor for your trip to Oulu, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 16.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -10.0 C).
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