December Weather in Santa Margarita, United States

Last updated: June 24, 2025

In December, the average temperature in Santa Margarita, United States hovers around 10°C (50°F). With a minimum of -2°C (29°F) and a maximum of 26°C (80°F), the weather can be quite variable. Expect 53 mm (2.1 in) of precipitation spread over 6 days, coupled with an average humidity of 76%. Be prepared for a mix of conditions as you explore this destination!

December Temperature in Santa Margarita

In December in Santa Margarita, the average temperature is 10°C (50°F). Maximums can reach 26°C (80°F) and minimums can be as low as -2°C (29°F). This makes it an ideal time for travelers to experience a mix of mild warmth and cool breezes, so be sure to pack accordingly!

December Weather in Santa Margarita: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Santa Margarita, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santa Margarita, December typically has an average temperature of 10°C (50°F), with highs reaching up to 26°C (80°F) and lows dropping to around -2°C (29°F).

Data source: Temperature data for Santa Margarita generated using information from the Copernicus Climate Change Service.

December Precipitation in Santa Margarita

In Santa Margarita in December, the precipitation amount is 53 mm (2.1 in) over a span of 6 days.

December Precipitation Trends in Santa Margarita

The chart displays monthly precipitation patterns in Santa Margarita, 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 Santa Margarita, December typically receives around 53 mm (2.1 inches) of precipitation spread over approximately 6 days.

Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

December Humidity in Santa Margarita

In Santa Margarita in December, humidity is 76%. With an average temperature of 10°C (50°F), this humidity feels like a damp chill that seeps through your clothes, making outdoor activities quite uncomfortable and necessitating a layer of warmth for traveling.

December Average Humidity in Santa Margarita

This chart illustrates the average monthly humidity levels in Santa Margarita, 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 Santa Margarita is approximately 76%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Santa Margarita

In Santa Margarita in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Santa Margarita, you can check the information here.

Maximum UV Index Levels in Santa Margarita for December

The chart shows the monthly maximum UV Index (UVI) for Santa Margarita 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 Santa Margarita typically reaches 3, which falls under the moderate exposure category.

Data source: Santa Margarita 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 Santa Margarita Compares to Other Months

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

This table compares monthly weather conditions in Santa Margarita, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	10°C (50°F)	78 mm (3.1 inches)	80%	moderate
February Weather	10°C (51°F)	59 mm (2.3 inches)	83%	moderate
March Weather	12°C (53°F)	72 mm (2.9 inches)	80%	very high
April Weather	15°C (59°F)	19 mm (0.8 inches)	76%	very high
May Weather	17°C (63°F)	11 mm (0.4 inches)	75%	extreme
June Weather	20°C (69°F)	0 mm (0.0 inches)	74%	extreme
July Weather	22°C (72°F)	0 mm (0.0 inches)	75%	extreme
August Weather	22°C (72°F)	0 mm (0.0 inches)	72%	extreme
September Weather	21°C (70°F)	1 mm (0.0 inches)	70%	very high
October Weather	18°C (64°F)	7 mm (0.3 inches)	70%	high
November Weather	13°C (56°F)	25 mm (1.0 inches)	74%	moderate
December Weather	10°C (50°F)	53 mm (2.1 inches)	76%	moderate