Los Angeles Weather in December
United States · Mediterranean climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
December in Los Angeles sees average temperatures ranging from a low of 8.5°C (47.3°F) to a high of 19.5°C (67.1°F), with a mean of 13.3°C (55.9°F). Compared to the annual average of 17.8°C (64.0°F), this month is 4.5°C cooler than the yearly norm. Precipitation averages 103.3mm, making it approximately 63.0mm wetter than the monthly average of 40.0mm. This is the wettest month of the year, with 103.3mm of precipitation and around 7.4 rainy days. The city receives an average of 7.8 hours of sunshine per day during December, with relative humidity averaging 60.6%. Wind speeds reach an average maximum of 12.6 km/h. For travelers, this month offers a temperature experience in Los Angeles, with wetter-than-average conditions compared to the rest of the year.
LA's reputation for perfect weather is mostly earned — but the microclimates will trick you. I packed for Santa Monica's 22°C and froze in Pacific Palisades' morning fog. September is the secret heat wave: 30°C inland, smoggy, oppressive. Pack layers even in summer — the marine layer keeps the coast 5°C cooler than 5km inland. May and October are my favorite windows: clear, 23°C, less traffic. Skip July-August if you're beach-phobic; the crowds at Venice are intense. December-March is underrated — 18°C, empty hiking trails, occasional dramatic rain.
December vs Adjacent Months
| Metric | November | December | January |
|---|---|---|---|
| Mean Temp | 16.0°C (60.8°F) | 13.3°C (55.9°F) | 12.4°C (54.3°F) |
| Rainfall | 17.0mm | 103.3mm | 83.2mm |
| Sunshine | 9.2 hrs | 7.8 hrs | 8.5 hrs |
| Humidity | 50.4% | 60.6% | 65.7% |
| Wind | 14.3 km/h | 12.6 km/h | 13.9 km/h |
| Rainy Days | 4.0 | 7.4 | 6.2 |
Seasonal Context
December falls in Winter in the Northern Hemisphere. Winter is the coolest season with the shortest daylight hours. For travelers visiting Los Angeles in December, the data indicates mixed conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Los Angeles in December?
The average temperature in Los Angeles during December ranges from 8.5°C (47.3°F) to 19.5°C (67.1°F), with a mean of 13.3°C (55.9°F).
How much does it rain in Los Angeles in December?
Los Angeles receives an average of 103.3mm of precipitation in December, spread across approximately 7.4 rainy days. This is the wettest month of the year.
What should I pack for Los Angeles in December?
Based on December weather data, pack warm layers, a medium jacket, and waterproof outerwear. Rain gear is essential — this month averages 103.3mm of precipitation.
Is December a good time to visit Los Angeles?
December is a cooler month, suitable for travelers who prefer mild weather and fewer crowds. Pack warm layers and enjoy indoor attractions.
Other Months for Los Angeles
Cities with Similar December Climate (Mediterranean)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 34.05°, -118.24°. Timezone: America/Los_Angeles. Last updated: 2026-07-30.