December in Los Angeles presents a fascinating paradox for visitors and residents alike. While much of the Northern Hemisphere braces for winter, Southern California enters its most comfortable season, characterized by moderate temperatures and a distinct lack of extreme weather. This month represents a transition period, shifting from the lingering warmth of autumn to the cooler, clearer days of mid-winter. Understanding the specific temperature patterns, daily variations, and regional microclimates is essential for planning any activity, from beach visits to mountain hikes. The average conditions provide a reliable baseline, but the actual experience can vary significantly depending on location and daily atmospheric patterns.
Average December Temperatures and Climate Data
To grasp what to expect, examining the numerical averages provides a solid foundation. The following table outlines the typical temperature ranges and climate metrics for Los Angeles during December, compiling data from historical records.
Metric | Average Value | Notes
Average High Temperature | 68°F (20°C) | Often reaches the upper 60s, pleasant for outdoor activities.
Average Low Temperature | 48°F (9°C) | Evenings and early mornings require a light jacket or sweater.
Record High | 88°F (31°C) | Occasional winter heat waves can push temperatures higher.
Record Low | 28°F (-2°C) | Rare frosts in inland valleys and colder microclimates.
Average Rainfall | 2.5 inches (64 mm) | Part of the wet season, but typically sporadic showers.
These figures illustrate a climate that is fundamentally mild compared to nearly every other major U.S. city. The average high of 68°F is ideal for sightseeing, walking tours, or sitting outdoors at a café. However, the near 20-degree swing between the daily high and low means layering is not just a suggestion—it is a practical necessity for comfort.
H3>Daily Temperature Variations and What to Wear
The "December los angeles temperature" is not a single number but a daily story of significant variation. Mornings often begin cool and crisp, with temperatures hovering near the 48°F average low. As the sun climbs, the city warms rapidly, creating a comfortable environment by late morning. This natural heating process continues to peak in the afternoon, before the setting sun ushers in a noticeable cool-down. For anyone planning a day out, this rhythm dictates wardrobe choices.
Light layers are the golden rule for navigating a December day in Los Angeles. A breathable t-shirt or blouse is perfectly suitable for the warm afternoon sun, but it should be paired with a cardigan, denim jacket, or light fleece for the morning and evening. Comfortable pants or jeans are preferable to shorts, especially after sunset. While the beaches might be tempting, the ocean breeze can make the late afternoon and evening feel surprisingly chilly, so a windbreaker is a wise accessory.
Regional Microclimates: Why the Temperature Varies Across the City
One of the most critical aspects of the December los angeles temperature is the dramatic impact of geography. The city is not a uniform climate zone; it is a collection of distinct microclimates that can experience vastly different conditions on the same day. This phenomenon is primarily driven by the proximity to the Pacific Ocean and the influence of coastal mountain ranges.
