Avg temperature -14c in Jan to 19c in July.
Avg precipitation 19mm April to 65mm August.
Avg windspeed <10mph year round.
UV index +4 in July (50% cloud cover).
Terrain: small and flat.
Conclusion: a tiny, flat city with cool, yet mild weather is a good place to ride a bike year round.
https://www.worldweatheronline.com/v2/weather-averages.aspx?...
http://www.oulu.climatemps.com/
https://www.google.ca/maps/place/Oulu,+Finland/@64.995967,25...