Saint-Martin-Boulogne Weather in September

September in Saint-Martin-Boulogne sees daytime temperatures around 20°C (68°F) and lows of 13°C (55°F) at night. With around 74 mm (2.9 in) of rainfall expected, it's worth packing a rain jacket.

Rainfall in Saint-Martin-Boulogne in September

You can expect rain on around 13 days based on historical patterns, with 74 mm (2.9 in) average for the month. Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.

Temperature in Saint-Martin-Boulogne in September

September tends to be one of the excellent months in Saint-Martin-Boulogne, with 20°C (68°F) in the afternoon and 13°C (55°F) overnight. September marks the summer season. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. Nights drop to around 13°C (55°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

Sunshine in Saint-Martin-Boulogne in September

The area enjoys a balanced 160 hours of sunlight, ensuring it's neither too overcast nor too sunny.

If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit.