The climate of Lille is generally cool and wet, rainy and windy all year round, but especially in autumn and winter.
The city is located in the far north of France, in the Nord-Pas de Calais region, a short distance from the Belgian border.
The average temperature of the coldest month (January) is of 3.6 °C (38 °F), that of the warmest month (July) is of 18.6 °C (65 °F). Here are the average temperatures.
Lille - Average temperatures
Min (°C)1145912141411842
Max (°C)671114182123232015106
Min (°F)343439414854575752463936
Max (°F)434552576470737368595043

Precipitation amounts to 745 millimeters (29.3 inches) per year: so, it is at an intermediate level. It ranges from 45 mm (1.8 in) in the driest month (February) to 70 mm (2.8 in) in the wettest ones (July, November, December). Here is the average precipitation.
Lille - Average precipitation

On average, there are around 1,620 sunshine hours per year. Here are the average sunshine hours per day.
Lille - Sunshine


Best Time

The best time to visit Lille runs from mid-May to mid-September, since it is the warmest and sunniest period of the year. Sometimes, nights can be cool or even a little cold even in these months, so it can be useful to bring a sweatshirt or sweater and a light jacket for the evening.