Olloy-sur-Viroin Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Olloy-sur-Viroin, Namur Province, Belgium. The figures are based on a 30-year period (1990–2020) to provide a reliable average. Let's now guide you through the details for a complete overview.

Generally, Olloy-sur-Viroin experiences moderate precipitation patterns, averaging 979 mm (39 in) yearly.

Monthly Precipitation Levels

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

Precipitation levels in Olloy-sur-Viroin remain relatively steady throughout the year. December has the most rain, with 100 mm (3.9 in) over 19 days. In September, this drops slightly to 71 mm (2.8 in), making the city's climate fairly predictable.

December, the wettest month, has a maximum daytime temperature of 7°C (45°F). The city receives 37 hours of sunshine in this period. During the driest month September you can expect a temperature of 20°C (68°F). For more detailed insights into the city's temperatures, visit our Olloy-sur-Viroin Temperature page.

Olloy-sur-Viroin's average annual precipitation is 979 mm (39 in). Let's compare this to some popular worldwide tourist destinations:

In Toronto, Canada, annual precipitation averages 964 mm (38 in), with snowy winters and rainy summers.

Beijing, China, receives 560 mm (22 in) of annual precipitation, concentrated in the summer months.

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

Bangkok, Thailand, experiences a tropical monsoon climate with 1668 mm (66 in) of annual rainfall, with the heaviest precipitation occurring during September and October.

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.

Precipitation has a very strong role in determining the local climate and ecosystem:

• 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.

• "Ginger" was the longest-lasting Atlantic tropical storm, which spun around the open ocean for 28 days in 1971.
• The world's largest snowflake was recorded in the Guinness Book of Records, at 38 cm (15 inches) wide and 20 cm (7.9 inches) thick. The snowflake fell at Fort Keogh, Montana, USA, on 28 January 1887.
• The greatest snowfall recorded was on Mt. Rainier, Washington State, USA, over 31.5 meters (103 feet) fell during the winter of 1972.

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