Winters in Carcassonne are mild and unpredictable, with temperatures fluctuating between freezing cold and relatively warm. Daytime temperatures can reach up to 18°C in January, while nighttime lows can drop as low as -6°C. As the season progresses, temperatures gradually rise, with February and March averaging around 11°C. Spring brings a welcome increase in warmth, with April and May temperatures rising steadily to an average of 16°C by May. Summer months are hot and dry, with July and August temperatures often reaching highs above 30°C, but with milder nights around 20-22°C.