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December Weather in Chula Vista, Mexico

Last updated: August 27, 2025

In December, the average temperature in Chula Vista, Mexico hovers around 14°C (58°F). Expect a range, with minimums dipping to -2°C (28°F) and maximums soaring up to 30°C (87°F). The month brings a light precipitation of 12 mm (0.5 in) spread over just 1 day, while average humidity sits comfortably at 86%.

December Temperature in Chula Vista

In December in Chula Vista, the average temperature is 14°C (58°F). Maximums can reach up to 30°C (87°F), while minimums can drop as low as -2°C (28°F). This varied climate makes Chula Vista an ideal destination for travelers seeking diverse weather experiences.

December Weather in Chula Vista: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Chula Vista, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chula Vista, December typically has an average temperature of 14°C (58°F), with highs reaching up to 30°C (87°F) and lows dropping to around -2°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec576471778486848580746558
Data source: Temperature data for Chula Vista 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.

December Precipitation in Chula Vista

In Chula Vista in December, the precipitation amount is 12 mm (0.5 in) over the course of 1 day.

December Precipitation Trends in Chula Vista

The chart displays monthly precipitation patterns in Chula Vista, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Chula Vista, December typically receives around 12 mm (0.5 inches) of precipitation spread over approximately 1 days.
JanFebMarAprMayJunJulAugSepOctNovDec337271317153230512
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Chula Vista

In Chula Vista in December, humidity is 86%. With an average temperature of 14°C (58°F), this humidity feels like traveling in a warm, sticky embrace that can make outdoor adventures a bit heavy and sweat-inducing, so it's wise to stay hydrated and take frequent breaks in the shade.

December Average Humidity in Chula Vista

This chart illustrates the average monthly humidity levels in Chula Vista, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Chula Vista is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%65%59%59%65%69%66%60%80%83%86%86%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Chula Vista

In Chula Vista in December, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Chula Vista, you can refer to this Hourly UV Index in Chula Vista.

Maximum UV Index Levels in Chula Vista for December

The chart shows the monthly maximum UV Index (UVI) for Chula Vista in December, 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 December, the maximum UV index in Chula Vista typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec710111313131313121086
Data source: Chula Vista December 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 December Weather in Chula Vista Compares to Other Months

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

This table compares monthly weather conditions in Chula Vista, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather14°C (57°F)3 mm (0.1 inches)75%high
February Weather18°C (64°F)3 mm (0.1 inches)65%very high
March Weather21°C (71°F)7 mm (0.3 inches)59%extreme
April Weather25°C (78°F)2 mm (0.1 inches)59%extreme
May Weather29°C (84°F)7 mm (0.3 inches)65%extreme
June Weather30°C (86°F)13 mm (0.5 inches)69%extreme
July Weather29°C (85°F)17 mm (0.7 inches)66%extreme
August Weather29°C (85°F)15 mm (0.6 inches)60%extreme
September Weather26°C (80°F)32 mm (1.3 inches)80%extreme
October Weather23°C (75°F)29 mm (1.2 inches)83%very high
November Weather18°C (65°F)5 mm (0.2 inches)86%very high
December Weather14°C (58°F)12 mm (0.5 inches)86%high

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