Pasto Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Pasto, Nariño, Colombia. These averages rely on historical data collected over 30 years, from 1990 to 2020. Now, let's break down all the details for a clearer picture.

Pasto experiences significant rainfall throughout the year, averaging 2311 mm (91 in) of precipitation annually. However, this abundant rainfall is not evenly distributed, with a distinct rainy season during certain months. You can clearly see this in our monthly precipitation graphs below.

Monthly Precipitation Levels

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

The climate in Pasto shows significant variation throughout the year. Expect 258 mm (10 in) of precipitation during the wettest month November, distributed over 19 rainy days.

In contrast, August offers drier and sunnier days, with around 85 mm (3.3 in) of rainfall over 13 rainy days.

November, the wettest month, has a maximum daytime temperature of 20°C (68°F). The city receives 107 hours of sunshine in this period. During the driest month August you can expect a temperature of 20°C (68°F). For more detailed insights into the city's temperatures, visit our Pasto Temperature page.

Pasto's average annual precipitation is 2311 mm (91 in). Let's compare this to some popular worldwide tourist destinations:

The climate in San Francisco, USA, is influenced by coastal weather, with 469 mm (18 in) of rainfall mostly during the winter months.

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.

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.

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