San Clemente (CA) Temperatures: Monthly Averages and Year-Round Insights
On this page, we’ll explore San Clemente’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
Seasonal changes in San Clemente bring a little variety without extreme temperature swings. Average maximum daytime temperatures range from a comfortable 27°C in September, the warmest time of the year, to a pleasant 19°C during cooler months like December. At night, minimum temperatures typically average around 8°C during these months.
The chart below illustrates the average maximum day and minimum night temperatures in San Clemente by month:
The coldest temperatures are usually recorded between 4 AM and 6 AM, while the hottest temperatures occur near 3 PM, at the peak of the sun's warmth. September, the city’s warmest month, receives 290 hours of sunshine.
The chart below shows the average temperature throughout the year:
December, the city’s coldest month, receives about 72 mm of rainfall spread over roughly 8 days. For more information, please visit our San Clemente 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.
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San Clemente Temperatures Compared World Wide
San Clemente’s average annual maximum temperature is 23°C. Let’s compare this with some popular tourist destinations:
The city of Rome, Italy, has an average annual temperature of 20°C, known for its sunny summers and comfortable 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.
Melbourne, Australia, has a slightly cooler climate, with an average annual temperature of 20°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.
Effects of Temperature on Weather and Climate
Temperature variations influence precipitation patterns in Amsterdam:
Rainfall: Warm air holds more moisture, leading to heavier rain during warmer months. However, precipitation is generally moderate year-round.
Snow: Occasional snowfall occurs in winter, though it rarely lasts very long.
For more detailed information about San Clemente’s weather, including monthly rainfall, sunshine hours, and humidity levels, visit our San Clemente climate page.
Current temperature in San Clemente (CA)
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