St. Blasien Weather in September

In St. Blasien, September brings pleasant daytime temperatures around 19°C (66°F), with nights cooling to 10°C (50°F). Expect quite a bit of rainfall this month.

Rainfall in St. Blasien in September

Looking at the last 30 years, the data shows about 14 days with rain, averaging 107 mm (4.2 in) for the month. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.

Temperature in St. Blasien in September

Expect highs of 19°C (66°F) in St. Blasien in September, with nights dropping to around 10°C (50°F). Temperatures can feel cooler in the morning and evening, so layering is often the best approach. With lows around 10°C (50°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.

Sunshine in St. Blasien in September

The area experiences a moderate amount of sunshine, with approximately 150 hours of sunlight expected. This means a decent mix of sun and overcast.

Wind Speed in St. Blasien in September

Wind speeds average 2 m/s (4 knots) during September. At this speed, expect light breezes that you can feel on your face and cause leaves to rustle gently. Since this is an average, some days are calmer with barely any wind while others have more noticeable gentle breezes.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. June, July and August typically offer the best weather for St. Blasien.