Bilthoven Weather in September

September in Bilthoven 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 Bilthoven in September

You can expect rain on around 16 days based on historical patterns, with 75 mm (3 in) average for the month. Expect plenty of grey, overcast days rather than intense storms. The rain rarely amounts to much on any given day.

Temperature in Bilthoven in September

September tends to be one of the perfect months in Bilthoven, with 20°C (68°F) in the afternoon and 11°C (52°F) overnight. Even when the weather is stable, mornings and evenings can still feel distinctly cool. With overnight lows of 11°C (52°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 Bilthoven in September

The city usually sees around 155 hours of sunlight, indicating a moderately sunny period.

Wind Speed in Bilthoven in September

September has wind speeds averaging 3 m/s (6 knots). You can expect comfortable light winds that steadily move flags and feel mild throughout the day. Since this is an average, daily conditions vary from gentle winds to more active breezes.

If you favor pleasant temperatures and minimal rainfall, September is one of the best months to visit Bilthoven.

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For a detailed overview over the year and the best time to visit the Netherlands, check out our Bilthoven's climate page.

Bilthoven Temperature in September

Min Temperature 11°C (52°F)  

Max Temperature 20°C (68°F)  

Chance of Rain 53%  

Precipitation 75 mm (3 in)  

Rainy days 16 days  

Humidity 83% *  

Windspeed 3 m/s (6 knots) *  

Sunshine 155 hours *  

Percentage Sunshine 35% *  

* Data from: De Bilt, the Netherlands (3 KM, 2 Miles).

What to Wear in Bilthoven in September

For Bilthoven in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Bilthoven in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

6/10

Cycling

9/10

Walking

9/10

Camping

8/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the Netherlands, check out our Bilthoven's climate page.

More climate data for Bilthoven

Temperature Rainfall Sunshine Humidity Wind Speed

See the full Bilthoven climate overview or explore weather in the Netherlands.