Winters in Kristiansand are cold and occasionally snowy, with January temperatures averaging around -3°C and often dropping below -20°C. Milder spells bring temperatures above freezing, but these are brief. Spring arrives slowly, with March temperatures gradually warming to an average of 4°C. By May, the mercury can soar to 29°C on warm days, marking a significant shift towards warmer conditions. Summer is mild and pleasant, with July being the warmest month, averaging around 19°C.