About Seclin, Hauts de France

With a population of around 12,200, Seclin sits in Hauts-de-France, France. The city operates in the Central European time zone.

Recent weather here gives a sense of typical conditions: in 2025, Seclin recorded a mean annual temperature of 53°F, ranging from 22°F lows in January to 98°F highs in July, with about 24 inches of precipitation across the year.