December in Los Angeles represents a fascinating meteorological transition, marking the official start of winter while maintaining a distinctively mild character. Unlike other major U.S. cities buried in snow, Southern California’s largest city experiences a season defined by moderate temperatures, increased precipitation, and a shift in daily rhythms. Understanding the specific conditions, including the average temperature Los Angeles December delivers, helps residents and visitors plan activities, from coastal walks to holiday gatherings.
Typical Temperature Ranges and Averages
When analyzing the average temperature Los Angeles December, it is essential to distinguish between coastal, valley, and mountain microclimates. Across the basin, the daily high typically ranges from 68°F to 72°F (20°C to 22°C), while overnight lows usually fall between 48°F and 52°F (9°C to 11°C). These figures represent long-term normals, providing a reliable baseline for what to expect, although specific locations can deviate significantly based on elevation and proximity to the Pacific Ocean.
Coastal vs. Inland Variations
The marine influence is a dominant factor in December climate. Areas like Santa Monica, Venice, and Malibu experience moderated temperatures, with the ocean acting as a thermal buffer. This results in cooler summers and warmer winters compared to areas further inland. Inland neighborhoods, such as those in the San Fernando Valley, tend to see slightly warmer daytime highs but significantly colder nighttime lows, occasionally dipping close to freezing on clear, calm nights.
Precipitation and Its Impact on Temperature
December is a key month in Los Angeles’s wet season, with storm systems from the Pacific Ocean frequently making landfall. While the average monthly precipitation is around 3 to 4 inches, these events are not distributed evenly. Rainy days, often characterized by overcast skies, can suppress daytime temperatures, making the air feel cooler than the thermometer indicates. Conversely, the clearing periods between storms bring abundant sunshine, allowing temperatures to rebound quickly and creating sharp diurnal swings.
Sunshine and Daylight Hours
Despite the winter season, Los Angeles retains a remarkable amount of sunshine in December. The city averages approximately 7 to 8 hours of daily sunshine, a testament to its Mediterranean climate. This ample daylight contributes to the moderate average temperature Los Angeles December provides, preventing the prolonged cold snaps common in more northern latitudes. Shorter days, with sunrise around 6:45 AM and sunset near 4:45 PM, create a unique atmosphere where warmth is concentrated into a few precious hours.
What to Wear and Activity Planning
Navigating the average temperature Los Angeles December requires a layered approach. Light jackets, sweaters, and long-sleeve shirts are essential for mornings and evenings. During the day, short sleeves are often comfortable, particularly in sunny spots. Footwear should accommodate potential wet conditions, as sidewalks and trails can be slick following a storm. This climate supports a wide range of activities, from hiking in Griffith Park to exploring holiday markets, provided one dresses appropriately for the time of day.
Monthly Data Overview
The following table summarizes the key climatic indicators for Los Angeles during December, synthesizing historical data to present a clear picture of conditions.
