LʼÎle-dʼOlonne Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in LʼÎle-dʼOlonne, Pays de la Loire, France. Long-term data from 1990 to 2020 was used to calculate these averages. Let's explore the details to provide you with a complete overview.

On average, LʼÎle-dʼOlonne receives a reasonable amount of rainfall, with an annual precipitation of 849 mm (33 in).

Monthly Precipitation Levels

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

The seasons in LʼÎle-dʼOlonne, bring significant changes in precipitation. The wettest month, November, receives high rainfall, with an average of 107 mm (4.2 in) of precipitation. This rainfall is distributed across 16 rainy days.

In contrast, the driest month, July, experiences much less rainfall, totaling 40 mm (1.6 in) over 10 rainy days. These distinct seasonal differences provide diverse experiences throughout the year.

November, the wettest month, has a maximum daytime temperature of 14°C (57°F). The city receives 91 hours of sunshine in this period. During the driest month July you can expect a temperature of 23°C (73°F). For more detailed insights into the city's temperatures, visit our LʼÎle-dʼOlonne Temperature page.

LʼÎle-dʼOlonne's average annual precipitation is 849 mm (33 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.

Meanwhile, Buenos Aires, Argentina, enjoys a humid subtropical climate with 1000 mm (39 in) of annual rainfall, mostly in the summer.

Perth, Australia, receives 565 mm (22 in) of rainfall annually, mostly during the winter months.

Singapore, situated near the equator, gets 2581 mm (102 in) of rainfall annually, with no distinct dry season and consistent monthly precipitation.

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.

Climate change is affecting precipitation patterns worldwide, including LʼÎle-dʼOlonne:

• Changing Rainfall Patterns: Global warming causes drastic changes in the patterns of rainfall. Some areas have been experiencing increased frequency and intensity of rainfall, while other areas experience longer dry spells or even droughts.
• Local Impacts: Many regions are experiencing heavier rainfall in the winter months and drier, hotter summers. This affects agriculture, water resources, and ecosystems.

• Mawsynram in India is noted as being the wettest place on earth, with over 11 meters (36 feet) of rain falling every year.
• In contrast, Antofagasta in Chile is among the driest places on the planet, getting less than 0.1mm (0.004 inches) per year, with some years recording virtually no rainfall.
• Nearly 1,650 thunderstorm cells are estimated over the planet at any given time.

For more detailed information about LʼÎle-dʼOlonne's weather, including sunshine hours, humidity levels, and temperature data, visit our LʼÎle-dʼOlonne Climate page.