Alphen Weather in September

Alphen in September averages 21°C (70°F) during the day and 11°C (52°F) at night. Keep in mind that quite a bit of rainfall is expected this month.

Rainfall in Alphen in September

Rain is expected on roughly 14 days, totalling around 70 mm (2.8 in) for the month. Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.

Temperature in Alphen in September

The temperature in Alphen in September is excellent. Daytime highs reach 21°C (70°F), with nights dropping to 11°C (52°F). Even when the weather is stable, mornings and evenings can still feel distinctly cool. With lows of 11°C (52°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.

Sunshine in Alphen in September

The month experiences a moderate amount of sunlight, with 146 hours of sunshine. This provides a nice balance between sunshine and clouds.

Wind Speed in Alphen in September

September sees wind speeds averaging 4 m/s (8 knots). You'll experience variable conditions with moderate winds that create small waves on water and keep branches moving. Conditions range from light winds to moderate breezes throughout the month.

If you're inclined towards comfortable temperatures and drier conditions, September is a good time to visit Alphen.