Winters in Hasselt are mild, with average temperatures ranging from 3°C in January to 6°C in February and December. Spring is a gradual warming period, with March and April averaging around 7°C and May reaching up to 12°C. Summers are warm but not hot, with July and August averages hovering around 18-19°C, while June can be quite sunny and reach temperatures of up to 33°C. Autumn brings a cooling trend, with October and November temperatures dropping back down to around 6°C on average.