Les Ulis Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Les Ulis, Ile de France, France. This average is based on long-term data collected between 1990 and 2020. Let's explore the details to provide you with a complete overview.

Generally, Les Ulis has a moderate amount of precipitation, averaging 737 mm (29 in) of rain/snowfall annually.

Monthly Precipitation Levels

The average number of days each month with precipitation (> 0.2 mm (0.01 in))

Despite minor fluctuations, Les Ulis enjoys fairly consistent precipitation throughout the year. In December, you can expect around 73 mm (2.9 in) of precipitation, while in September, Les Ulis receives about 53 mm (2.1 in).

December, the wettest month, has a maximum daytime temperature of 9°C (48°F). The city receives 58 hours of sunshine in this period. During the driest month September you can expect a temperature of 22°C (72°F). For more detailed insights into the city's temperatures, visit our Les Ulis Temperature page.

Annual Rainfall in France: City Comparison

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.

Annual

Annual

Map not visible? Whoops sorry! Please refresh the page.

Legend

heavy rainfall

high

moderate

low

almost none

Heavy annual rainfall has been defined as more than 1000 mm (39 in) precipitation. High: 600 mm (24 in) to 1000 mm (39 in). Moderate: 250 mm (9.8 in) to 600 mm (24 in). Low: less than 250 mm (9.8 in).

Les Ulis vs World: Rainfall Compared

Les Ulis's average annual precipitation is 737 mm (29 in). Let's compare this to some popular worldwide tourist destinations:

The city of Rome, Italy, has an average annual precipitation of 832 mm (33 in), spread fairly evenly throughout the year.

In Seoul, South Korea, the average annual precipitation is 1237 mm (49 in), with most rain falling during the summer monsoon season.

In Tokyo, Japan, the average annual precipitation is 1528 mm (60 in), with significant summer rains due to typhoon season.

Ho Chi Minh City, Vietnam, receives 1955 mm (77 in) of annual rainfall, with a pronounced wet season from May to November, typical of its tropical monsoon climate.

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.

Rainy Seasons: Many parts of the world have well-defined wet seasons where precipitation is distinctly higher. These are normally accompanied by lush vegetation and temperature patterns.

Dry Seasons: In areas where the climate is either desert or Mediterranean, the amount of precipitation is drastically reduced, leading to a shortage of water and arid conditions.

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 Les Ulis's weather, including sunshine hours, humidity levels, and temperature data, visit our Les Ulis Climate page.

Current rainfall in Les Ulis

10-Day Forecast