Richterswil Weather in September

September in Richterswil averages 19°C (66°F) during the day and 10°C (50°F) at night. Quite a bit of rainfall is typical this month, with around 148 mm (5.8 in) on average. An umbrella is a good idea.

Rainfall in Richterswil in September

Historically, September sees about 13 days of rain, with a monthly average of 148 mm (5.8 in). The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Richterswil in September

Expect highs of 19°C (66°F) in Richterswil in September, with nights dropping to around 10°C (50°F). The difference between afternoon and evening temperatures is usually noticeable. Nights fall to 10°C (50°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.

Sunshine in Richterswil in September

The area enjoys a balanced 166 hours of sunlight, ensuring it's neither too overcast nor too sunny.

Wind Speed in Richterswil 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.

Should you favor a climate that's both dry and comfortably warm, July and August typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.