Is Grande-Synthe safe to visit?

Travelia rates Grande-Synthe, France “some risk”, following US State Department and UK FCDO travel advisories.

What is the sea temperature in Grande-Synthe in July?

The sea off Grande-Synthe averages about 17°C in July.

Grande-Synthe is warmest in Jul and driest in Feb; mild (18–28°C) months are Jul, Aug.

coastal destination · city of 23,213 · warmest in Jul · sea ~17°C in July · mid-range

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg °C	5	5	7	9	12	15	18	18	16	12	8	6
High °C	7	7	10	12	16	18	20	21	19	15	11	8
Low °C	3	2	4	6	9	12	14	15	13	9	6	4
Sea °C	8	7	7	9	12	14	17	18	18	15	13	10
Rain (days)	56	40	49	45	46	52	51	49	66	68	73	61

Warmest month: Jul. Driest: Feb.

JulAugmild (18–28°C)

Musée de la mine, de la sidérurgie et de la minéralogie
Bio-Topia Dunkerque · Apr-Sep 09:45-18:30; Oct-Dec 09:45-17:30; Feb-Mar Mo-Su 09:45-17:30
Monument à Georges Guynemer
Ruines de l'ancienne écluse de Mardyck
Best Hotel Dunkerque
Ancien abri souterrain
R600
R622

Places from OpenStreetMap contributors (ODbL) — 18 sights and 81 places to eat mapped in total.