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November Weather in Costa Mesa, United States

Last updated: June 24, 2025

In November, the average temperature in Costa Mesa, United States is a comfortable 17°C (63°F). Expect a range from a cool 8°C (46°F) at night to a warm 32°C (90°F) during the day. With an average precipitation of 18 mm (0.7 in) spread over just 2 days, the atmosphere remains pleasantly humid, with an average humidity of 68%. Perfect weather for exploring the charming landscapes!

November Temperature in Costa Mesa

In November in Costa Mesa, the average temperature is 17°C (63°F). The maximum can reach 32°C (90°F) and the minimum can be as low as 8°C (46°F). This variation makes it a great time to explore the area while enjoying mild days and cool evenings.

November Weather in Costa Mesa: Daily Temperature Highs, Lows, and Averages

The chart illustrates November temperature patterns in Costa Mesa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Costa Mesa, November typically has an average temperature of 17°C (63°F), with highs reaching up to 32°C (90°F) and lows dropping to around 8°C (46°F).
JanFebMarAprMayJunJulAugSepOctNovDec575759636467727372696357
Data source: Temperature data for Costa Mesa generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

November Precipitation in Costa Mesa

In Costa Mesa in November, the precipitation amount is 18 mm (0.7 in) over the course of 2 days.

November Precipitation Trends in Costa Mesa

The chart displays monthly precipitation patterns in Costa Mesa, with values for each month alongside November’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how November’s conditions compare to those of other months. In Costa Mesa, November typically receives around 18 mm (0.7 inches) of precipitation spread over approximately 2 days.
JanFebMarAprMayJunJulAugSepOctNovDec6552552312432391868
Data source: Precipitation data for November generated using information from the Copernicus Climate Change Service.
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November Humidity in Costa Mesa

In Costa Mesa in November humidity is 68%. With an average temperature of 17°C (63°F), this humidity feels like a warm, gentle embrace, making it perfect for exploring local attractions but slightly challenging for outdoor activities during the hottest parts of the day.

November Average Humidity in Costa Mesa

This chart illustrates the average monthly humidity levels in Costa Mesa, with November’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In November, average humidity in Costa Mesa is approximately 68%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec74%79%75%71%70%72%73%69%68%67%68%71%
Data source: Humidity data for November generated using information from the Copernicus Climate Change Service.

November UV Index in Costa Mesa

In Costa Mesa in November, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Costa Mesa.

Maximum UV Index Levels in Costa Mesa for November

The chart shows the monthly maximum UV Index (UVI) for Costa Mesa in November, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In November, the maximum UV index in Costa Mesa typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101011111010754
Data source: Costa Mesa November UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How November Weather in Costa Mesa Compares to Other Months

Weather in Costa Mesa varies notably across the year, with each month offering distinct climate conditions. This page compares November’s weather to other months in Costa Mesa, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Costa Mesa, showing how November’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather14°C (57°F)65 mm (2.5 inches)74%moderate
February Weather14°C (58°F)52 mm (2.0 inches)79%high
March Weather15°C (60°F)55 mm (2.2 inches)75%very high
April Weather17°C (63°F)23 mm (0.9 inches)70%very high
May Weather18°C (64°F)12 mm (0.5 inches)70%very high
June Weather20°C (68°F)4 mm (0.2 inches)72%extreme
July Weather22°C (72°F)3 mm (0.1 inches)73%extreme
August Weather23°C (73°F)2 mm (0.1 inches)69%very high
September Weather22°C (72°F)3 mm (0.1 inches)68%very high
October Weather20°C (69°F)9 mm (0.4 inches)67%high
November Weather17°C (63°F)18 mm (0.7 inches)68%moderate
December Weather14°C (58°F)68 mm (2.7 inches)71%moderate

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