Affoltern Weather in September

September in Affoltern typically sees daytime highs of 20°C (68°F) and nighttime lows of 11°C (52°F). Rainfall is also possible this month, so it's worth packing an umbrella.

Rainfall in Affoltern in September

Historically, approximately 13 days this month are expected to have rain, averaging 129 mm (5.1 in). Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.

Temperature in Affoltern in September

In September, Affoltern sees pleasant temperatures, with highs of 20°C (68°F). Nights drop to around 11°C (52°F). Temperatures can feel cooler in the morning and evening, so layering is often the best approach. At 11°C (52°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.

Sunshine in Affoltern in September

The month experiences a moderate amount of sunlight, with 166 hours of sunshine. This provides a nice balance between sunshine and clouds.

Wind Speed in Affoltern in September

Average wind conditions reach 2 m/s (4 knots) in September. This creates comfortable weather with light winds that gently move vegetation. Keep in mind this is an average. Daily conditions range from near-calm to more noticeable wind.

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