Boulogne-Billancourt Weather in September

Boulogne-Billancourt in September sees pleasant daytime temperatures of 22°C (72°F) and nighttime lows of 11°C (52°F). With just 53 mm (2.1 in) of rainfall on average, it's the driest month of the year.

Rainfall in Boulogne-Billancourt in September

Conditions tend to be dry and settled, making it a good month for outdoor plans. Past climate data indicates that roughly 12 days will see rain, totalling around 53 mm (2.1 in) for the month. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.

Temperature in Boulogne-Billancourt in September

September is a perfect month in Boulogne-Billancourt, with 22°C (72°F) during the day and 11°C (52°F) at night. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. Nights cool down to 11°C (52°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.

Sunshine in Boulogne-Billancourt in September

With about 172 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.

Wind Speed in Boulogne-Billancourt in September

Average wind speeds reach 3 m/s (6 knots) in September, creating light breezes that feel pleasant throughout the day. Some days are calmer, while others bring slightly more active breezes.

If your ideal day consists of dry skies and pleasant temperatures, May, June, July, August and September typically offer the best circumstances for Boulogne-Billancourt.

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For a detailed overview over the year and the best time to visit France, check out our Boulogne-Billancourt's climate page.

Boulogne-Billancourt Temperature in September

Min Temperature 11°C (52°F)  

Max Temperature 22°C (72°F)  

Chance of Rain 40%  

Precipitation 53 mm (2.1 in)  

Rainy days 12 days  

Humidity 77% *  

Windspeed 3 m/s (6 knots) *  

Sunshine 172 hours *  

Percentage Sunshine 44% *  

* Data from: Paris, France (21 KM, 13 Miles).

What to Wear in Boulogne-Billancourt in September

Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Rain gear is recommended, you can expect wet weather on multiple days. Sunglasses could come in handy during the sunnier parts of your trip.

What To Do in Boulogne-Billancourt in September

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

Swimming

6/10

Cycling

10/10

Walking

10/10

Camping

8/10

Outdoor sports

10/10

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 France, check out our Boulogne-Billancourt's climate page.

More climate data for Boulogne-Billancourt

Temperature Rainfall Sunshine Humidity Wind Speed

See the full Boulogne-Billancourt climate overview or explore weather in France.