Arequipa Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Arequipa, Arequipa, Peru. This average is based on long-term data collected between 1990 and 2020. Let's explore the details to provide you with a complete overview.

Arequipa is known for its low rainfall, with yearly precipitation amounts around 100 mm (3.9 in).

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, February receives substantial rainfall, averaging 25 mm (1 in) of precipitation, recorded across 7 rainy days.

In contrast, the driest month, June brings less rainfall, with 0 mm (0 in) over 0 rainy days.

February, the wettest month, has a maximum daytime temperature of 16°C (61°F). The city receives 190 hours of sunshine in this period. During the driest month June you can expect a temperature of 19°C (66°F). For more detailed insights into the city's temperatures, visit our Arequipa Temperature page.

Arequipa's average annual precipitation is 100 mm (3.9 in). Let's compare this to some popular worldwide tourist destinations:

Seville, Spain, experiences 541 mm (21 in) of rainfall annually, with wet winters and dry summers typical of southern Spain.

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.

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