In the winter months, Douai experiences cold temperatures with January and February often seeing lows below freezing. March brings a gradual warming trend, with temperatures rising steadily throughout the month. Spring is mild and pleasant, with April and May enjoying warm days and cool nights. Summer is characterized by stable high temperatures, with July and August averaging around 18°C, but with occasional heatwaves pushing temperatures into the mid-20s to low 30s. Autumn brings a return to cooler temperatures, with October and November feeling distinctly chilly, especially in the mornings.