Aliso Viejo (CA) Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Aliso Viejo, California, United States of America. Long-term data from 1990 to 2020 was used to calculate these averages. Let's explore the details to provide you with a complete overview.

Aliso Viejo tends toward drier weather patterns, receiving approximately 257 mm (10 in) of rain per year. The city experiences a distinct dry season during certain months, contributing to seasonal contrasts shown in the charts below.

Monthly Precipitation Levels

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

The seasons in Aliso Viejo, bring significant changes in precipitation. The wettest month, December, receives moderate rainfall, with an average of 75 mm (3 in) of precipitation. This rainfall is distributed across 8 rainy days.

In contrast, the driest month, August, experiences much less rainfall, totaling 0.3 mm (0.01 in) over 0 rainy days. These distinct seasonal differences provide diverse experiences throughout the year.

December, the wettest month, has a maximum daytime temperature of 19°C (66°F). The city receives 205 hours of sunshine in this period. During the driest month August you can expect a temperature of 30°C (86°F). For more detailed insights into the city's temperatures, visit our Aliso Viejo Temperature page.

Annual Rainfall in the United States of America: City Comparison

The map below shows the annual precipitation across the United States of America. You can also select the different months in case you are interested in a specific month.

Aliso Viejo vs World: Rainfall Compared

Aliso Viejo's average annual precipitation is 257 mm (10 in). Let's compare this to some popular worldwide tourist destinations:

In Barcelona, Spain, the average annual precipitation is 620 mm (24 in), evenly distributed across the year with no extreme wet or dry seasons.

In Shanghai, China, the annual average precipitation is 1347 mm (53 in), with a humid subtropical climate.

Adelaide, Australia, enjoys 511 mm (20 in) of annual precipitation, with dry summers and wet winters.

Kuala Lumpur, Malaysia, receives 2529 mm (100 in) of annual rainfall, characteristic of its equatorial tropical rainforest climate, with consistent rainfall throughout the year and peak months during March and November.

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.

Rainy Seasons: Many parts of the world have well-defined wet seasons where precipitation is distinctly higher. These are normally accompanied by lush vegetation and temperature patterns.

Dry Seasons: In areas where the climate is either desert or Mediterranean, the amount of precipitation is drastically reduced, leading to a shortage of water and arid conditions.

• 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 Aliso Viejo (CA)'s weather, including sunshine hours, humidity levels, and temperature data, visit our Aliso Viejo (CA) Climate page.