Rapperswil-Jona Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Rapperswil-Jona, Switzerland. These averages rely on historical data collected over 30 years, from 1990 to 2020. Let's now guide you through the details for a complete overview.
Rapperswil-Jona has a notably wet climate with abundant precipitation, recording 1742 mm (69 in) of rain/snowfall per year. It does, however, have a distinct rainy season during certain months. Have a look at our detailed charts below to see how precipitation varies throughout the year.
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm (0.01 in))
While rainfall varies throughout the year, each season offers its own charm. June brings wetter days averaging 196 mm (7.7 in) of precipitation, spread over 17 rainy days.
In contrast, January experiences a drier climate, with about 113 mm (4.4 in) of snow/rainfall spread across 15 snowy/rainy days.
June, the wettest month, has a maximum daytime temperature of 21°C (70°F). The city receives 208 hours of sunshine in this period. During the driest month January you can expect a temperature of 4°C (39°F). For more detailed insights into the city's temperatures, visit our Rapperswil-Jona Temperature page.
Annual Rainfall in Switzerland: City Comparison
The map below shows the annual precipitation across Switzerland. You can also select the different months in case you are interested in a specific month.
heavy rainfall
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moderate
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Rapperswil-Jona vs World: Rainfall Compared
Rapperswil-Jona's average annual precipitation is 1742 mm (69 in). Let's compare this to some popular worldwide tourist destinations:
In Lisbon, Portugal, the average annual precipitation is 774 mm (30 in), characterized by wet winters and dry summers typical of the Mediterranean climate.
Osaka, Japan, experiences 1507 mm (59 in) of rainfall annually, spread across the year with wetter summers.
In Brisbane, Australia, the annual precipitation is 979 mm (39 in), making it wetter than Sydney.
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.
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 Rapperswil-Jona:
- 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.
- 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 Rapperswil-Jona's weather, including sunshine hours, humidity levels, and temperature data, visit our Rapperswil-Jona Climate page.
