Chantilly Rainfall & Precipitation: Monthly Averages and Year-Round Insights

This page shows the average amount of rainfall per month in Chantilly. The numbers are calculated over a 30-year period to provide a reliable average. Let's now guide you through the details for a complete overview.

Generally, Chantilly experiences moderate precipitation patterns, averaging 752 mm yearly.

Monthly Precipitation Levels

The average number of days each month with precipitation (> 0.2 mm)

Precipitation levels in Chantilly remain relatively steady throughout the year. December has the most rain, with 78 mm over 16 days. In September, this drops slightly to 51 mm, making the city's climate fairly predictable.

December, the city’s wettest month, has a maximum daytime temperature of 8°C and receives 58 hours of sunshine. During the driest month September you can expect a temperature of 22°C. For more detailed insights into the city’s temperatures, visit our Chantilly Temperature page.

Annual Precipitation in France

The map below shows the annual precipitation across France. You can also select the different months in case you are interested in a specific month.

Amsterdam Precipitation Compared World Wide

Chantilly’s average annual precipitation is 752 mm. Let’s compare this to some popular worldwide tourist destinations:

New York City, USA, receives 1276 mm of rainfall annually, with precipitation evenly distributed throughout the year.

Osaka, Japan, experiences 1507 mm of rainfall annually, spread across the year with wetter summers.

Perth, Australia, receives 565 mm of rainfall annually, mostly during the winter months.

Singapore, situated near the equator, gets 2581 mm of rainfall annually, with no distinct dry season and consistent monthly precipitation.

How is Precipitation Measured?

Precipitation amounts are measured using specific gauges installed at weather stations, collecting both rain and snow and any other type of precipitation. Rainfall is measured directly in millimeters, while that from snow and ice is obtained by melting it. Automated systems often incorporate heaters to make this easier.

Information from these stations is transmitted via Wi-Fi, satellite, GPS, or telephone connections to central monitoring networks. This information is immediately updated and integrated into weather models and forecasts.

Interesting weather facts

• The U.S. has a significant number of thunderstorms every year, with over 14.6 million taking place across the world annually.
• Approximately 70% of lightning bolts strike land rather than oceans.
• A storm named John was the longest-lasting Pacific tropical storm, continuing for 31 days. As it crossed the dateline twice, it changed status from a hurricane to a typhoon and back to a hurricane.

For more detailed information about Chantilly’s weather, including sunshine hours, humidity levels, and temperature data, visit our Chantilly Climate page.