Grenchen Weather in September

Grenchen in September sees pleasant daytime temperatures of 20°C (68°F) and nighttime lows of 10°C (50°F). Rainfall is fairly high this month at around 116 mm (4.6 in), so pack a rain jacket to stay dry.

Rainfall in Grenchen in September

The climate data from previous years indicates about 13 days of rain, averaging 116 mm (4.6 in) for the month. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.

Temperature in Grenchen in September

If you're visiting Grenchen in September, expect highs of 20°C (68°F) and overnight lows around 10°C (50°F). The difference between afternoon and evening temperatures is usually noticeable. With overnight lows of 10°C (50°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

Sunshine in Grenchen in September

The month experiences a moderate amount of sunlight, with 176 hours of sunshine. This provides a nice balance between sunshine and clouds.

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