weather in south california in december

3 min read 24-02-2025

Meta Description: Planning a December trip to Southern California? Discover what to expect from the weather: sunshine, mild temperatures, and the occasional rainfall. Pack accordingly for perfect SoCal adventures! Learn about average temperatures, rainfall probabilities, and what to wear for a comfortable trip. This comprehensive guide ensures you're prepared for the diverse Southern California December weather.

December's Delight: Southern California's Mild Climate

Southern California boasts a famously pleasant climate, and December is no exception. While not as scorching as summer, December offers comfortable temperatures ideal for outdoor activities. Expect mostly sunny skies, perfect for exploring the region's beaches, mountains, and deserts. However, it's not always sunshine and roses (or should we say, sunshine and succulents?).

Average Temperatures Across Southern California

Temperatures in December vary slightly depending on your location within Southern California. Coastal areas like Los Angeles and San Diego typically experience daytime highs in the mid-60s Fahrenheit (around 18° Celsius) and nighttime lows in the mid-50s Fahrenheit (around 13° Celsius). Inland areas, such as inland San Diego County and the Coachella Valley, tend to be warmer during the day and cooler at night. Expect higher highs and lower lows in these areas.

Coastal Areas (Los Angeles, San Diego): Highs: 60-65°F (15-18°C); Lows: 50-55°F (10-13°C)
Inland Areas (Inland Empire, Coachella Valley): Highs: 65-75°F (18-24°C); Lows: 40-50°F (4-10°C)
Mountain Areas (Big Bear, Lake Arrowhead): Highs: 40-50°F (4-10°C); Lows: 20-30°F (-7- -1°C) Snow is possible at higher elevations.

Remember to always check a specific forecast closer to your travel dates.

Rainfall: A Chance of Showers

While December is generally dry in Southern California, there is always a chance of rain. The amount and frequency of rainfall vary significantly from year to year and can be very localized. Some areas might see a few sprinkles, while others could experience more substantial rainfall. It’s wise to pack a light jacket or umbrella, just in case.

How Likely is Rain in December?

The probability of rain in December is relatively low compared to other months, but it's not unheard of. Think of it as a chance of a refreshing shower, not a monsoon.

What to Pack for Southern California in December

Packing for a December trip to Southern California requires some consideration of the varied weather conditions. Here's a suggested packing list:

Layers: Pack layers to adapt to changing temperatures throughout the day. A light jacket or sweater is essential, even if you plan on spending most of your time outdoors.
Sunscreen: Even on cloudy days, the sun can be strong in Southern California. Don't forget your sunscreen!
Comfortable shoes: You'll likely be doing a lot of walking, so comfortable shoes are a must.
Umbrella or rain jacket: While rain is not guaranteed, it's always a good idea to be prepared for a shower.
Warm clothing (for evenings and inland areas): Temperatures can drop significantly at night, particularly in inland areas. Pack warmer layers like a fleece or light down jacket.

Enjoying December in Southern California: Activities and Considerations

December in Southern California offers a wealth of activities. From exploring the beaches of Malibu to hiking in the Santa Monica Mountains, from enjoying the holiday festivities in Disneyland to exploring the natural beauty of Joshua Tree National Park, there's something for everyone.

Remember to plan your activities based on the specific weather forecast and be prepared for potential changes in the weather.

December Holiday Events

December in Southern California is a festive time, with many holiday events taking place throughout the region. From dazzling Christmas light displays to festive holiday markets and ice skating rinks, there's an abundance of holiday cheer. Check local event listings for specific dates and times.

Conclusion: Embrace the Southern California December Weather

While December in Southern California doesn’t always offer the warmest weather, it provides a comfortable and enjoyable experience. With its mix of sunshine, mild temperatures, and the occasional rain shower, it’s the perfect time to explore all that this diverse region has to offer. Remember to pack layers, check the forecast, and get ready for a memorable trip!