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Aliso Viejo (CA) Temperatures: Monthly Averages and Year-Round Insights

On this page, we’ll explore Aliso Viejo’s temperature statistics in detail, including day and night variations and monthly averages. We’ll also compare the annual temperature to other cities in the United States of America.

Monthly Temperature Averages

Aliso Viejo sees moderate fluctuations in temperatures, making each season distinct yet not extreme. On average, maximum daytime temperatures range from a warm 30°C in September to a pleasant 19°C in December. Nighttime temperatures can drop, with averages reaching 8°C in December.

The chart below illustrates the average maximum day and minimum night temperatures in Aliso Viejo by month:

The early hours of 4 AM to 6 AM often see the lowest temperatures, while 3 PM marks the peak of the day’s heat as the sun’s impact is strongest. September, the city’s warmest month, boasts 290 hours of sunshine.

The chart below shows the average temperature throughout the year:

December, the city’s coldest month, receives about 75 mm of rainfall spread over roughly 8 days. For more information, please visit our Aliso Viejo Precipitation page.

Annual Temperatures in the United States of America Compared

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

Annual
Map not visible? Whoops sorry! Please refresh the page.
Legend very warm warm pleasant moderate cold very cold
Very warm means maximum temperatures above 30°C. Warm: 22°C to 30°C. Pleasant: 18°C to 22°C Moderate: 12°C to 18°C. Cold: 2°C to 12°C. Very cold: lower than 2°C

Aliso Viejo Temperatures Compared World Wide

Aliso Viejo’s average annual maximum temperature is 25°C. Let’s compare this with some popular tourist destinations:

In Lisbon, Portugal, the average annual temperature is 21°C, offering warm summers and mild, rainy winters.

Meanwhile, Queenstown, New Zealand, the average annual temperature is significantly lower at 10°C, with mild summers and cold winters.

Meanwhile, Buenos Aires, Argentina, enjoys a humid subtropical climate with an average annual temperature of 23°C, featuring hot summers and mild winters.

Adelaide, Australia, enjoys warm summers and mild winters, with an average annual temperature of 21°C.

How are these Temperatures Measured?

Generally, temperature data depicting climate is usually given over a 30-year average in order to reduce short-term fluctuations and reveal better long-term trends in climate conditions.

This temperature data is taken from land-based thermometers, ocean buoys, ships, and satellites. These measurements are transmitted to weather stations and climate centers around the globe where they are processed, averaged, and analyzed in order to monitor the trends and create climate models.

Temperatures in the Mountains

Although not all regions have mountains, elevated areas exhibit distinct temperature variations.

  • Sun Exposure: Sunlit slopes tend to be warmer, while shaded areas remain cooler.
  • Altitude Effects: Temperatures drop by approximately 6°C for every 1,000 meters of elevation, creating distinct microclimates.

For more detailed information about Aliso Viejo’s weather, including monthly rainfall, sunshine hours, and humidity levels, visit our Aliso Viejo climate page.


Current temperature in Aliso Viejo (CA)

Sat   Dec 28
18°C | 10°C
SW 3 m/s
broken clouds and no rain

broken clouds and no rain

Sun   Dec 29
18°C | 11°C
SW 3 m/s
almost clear and no rain

almost clear and no rain

Mon   Dec 30
18°C | 9°C
SW 3 m/s
almost clear and no rain

almost clear and no rain

Interested in more climate information?

This site provides you with all the information you need about the climate in Aliso Viejo.

Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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