Thun Weather in September

Thun in September sees moderate temperatures, with highs around 17°C (63°F) and overnight lows of 7°C (45°F). Rainfall is fairly high at around 152 mm (6 in) on average, so pack waterproofs just in case.

Rainfall in Thun in September

The climate data from previous years indicates about 13 days of rain, averaging 152 mm (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 Thun in September

Daytime temperatures in Thun reach 17°C (63°F) in September, dropping to 7°C (45°F) at night. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. At 7°C (45°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.

Sunshine in Thun in September

The month brings about 149 hours of sunlight, offering a comfortable mix of sun and overcast.

For Thun itself, August generally stands out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.