Winters in Namur, Belgium are typically cool and unpredictable, with temperatures often fluctuating between freezing and mild. The coldest months are January and December, with average temperatures ranging from 2°C to 5°C. Spring arrives in March and April, bringing warmer temperatures that can reach up to 24°C on occasion, but still experiencing chilly mornings. Summers are generally warm, with July being the warmest month, averaging around 17°C, while September and October mark the transition into autumn, with temperatures gradually dropping again.