Osorno Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Osorno, Los Lagos, Chile. These values are calculated using 30 years of data (1990–2020) to ensure accuracy. Now, let's explore all the details to give you a full picture.
Osorno is known for its substantial rainfall, with annual precipitation reaching 1545 mm (61 in). While the overall climate is wet, there are notable seasonal patterns that create interesting contrasts, as demonstrated in our graph below.
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm (0.01 in))
Significant seasonal changes in precipitation occur throughout the year. During the wettest month, June receives substantial rainfall, averaging 248 mm (9.8 in) of precipitation, recorded across 12 rainy days.
In contrast, the driest month, January brings less rainfall, with 43 mm (1.7 in) over 3 rainy days.
June, the wettest month, has a maximum daytime temperature of 12°C (54°F). During the driest month January you can expect a temperature of 23°C (73°F). For more detailed insights into the city's temperatures, visit our Osorno Temperature page.
Explore Osorno's Historical Precipitation: 1976-2026
Browse day-by-day precipitation records for Osorno spanning 51 years. Select any month and year to see actual rainfall and snowfall recorded on each day.
Annual Rainfall in Chile: City Comparison
The map below shows the annual precipitation across Chile. You can also select the different months in case you are interested in a specific month.
heavy rainfall
high
moderate
low
almost none
Osorno vs World: Rainfall Compared
Osorno's average annual precipitation is 1545 mm (61 in). Let's compare this to some popular worldwide tourist destinations:
Boston, USA, experiences 1238 mm (49 in) of annual precipitation, including significant snowfall during the winter.
In Shanghai, China, the annual average precipitation is 1347 mm (53 in), with a humid subtropical climate.
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 Osorno:
- 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 Osorno's weather, including sunshine hours, humidity levels, and temperature data, visit our Osorno Climate page.
