southern california temperatures in december

2 min read 01-03-2025

southern california temperatures in december

Southern California in December offers a delightful escape from winter's chill. But what can you expect in terms of temperature? This guide breaks down the typical weather patterns, regional variations, and what to pack for a memorable December trip.

Average Temperatures in Southern California in December

December in Southern California brings mild temperatures, perfect for outdoor activities. While "mild" is relative, it's significantly warmer than many other parts of the country. Expect daytime highs averaging in the mid-60s to low 70s Fahrenheit (18-22° Celsius). Overnight lows generally hover in the 50s (10-15° Celsius). However, these are averages; daily fluctuations are common.

Coastal Cities:

Coastal cities like San Diego, Los Angeles, and Santa Monica experience a more moderate climate. Expect consistent temperatures, rarely dipping below 50°F (10°C) at night. Ocean breezes can keep things cooler, even on sunny days. Think layers!

Inland Areas:

Inland areas, such as Riverside, Palm Springs, and inland parts of Orange County, experience warmer days and cooler nights. Daytime highs can reach the 70s (°F) and even the low 80s (°F) in some desert areas, while nighttime lows might drop into the 40s (°F). The temperature difference between day and night is more pronounced.

Mountain Areas:

Mountain regions like Big Bear and Lake Arrowhead are significantly cooler. Snow is possible, especially at higher elevations. Daytime highs might only reach the 40s (°F) and lows can dip well below freezing. This is prime time for skiing and snowboarding.

What to Pack for Southern California in December

Packing for a December trip to Southern California requires considering your destination and activities.

Coastal areas:

Layers: A combination of lightweight long-sleeved shirts, sweaters, and a light jacket is ideal.
Comfortable walking shoes: You'll likely be doing a lot of exploring.
Sunscreen and sunglasses: Even on cloudy days, the sun can be strong.
Light rain jacket: While rain isn't frequent, it's always good to be prepared.

Inland areas:

Shorts and t-shirts for daytime: Days can be quite warm.
Sweater or light jacket for evenings: Temperatures drop considerably at night.
Comfortable walking shoes or sandals.

Mountain areas:

Warm layers: Pack heavy sweaters, fleece jackets, thermal underwear, and a waterproof outer layer.
Waterproof, insulated boots: Essential for hiking or snow activities.
Warm hat, gloves, and scarf.

How to Prepare for December Weather in Southern California

Check the forecast: Before you go, check the specific forecast for your destination and plan your activities accordingly. Websites and apps provide up-to-the-minute weather information.
Be prepared for microclimates: Southern California has diverse geography, resulting in significant temperature variations over short distances.
Pack versatile clothing: Layering allows you to adjust to changing temperatures throughout the day.

December Events and Activities in Southern California

December offers a wealth of activities. From holiday light displays and festive markets to outdoor adventures, there's something for everyone. Research specific events happening during your visit.

Conclusion

Southern California in December offers a pleasant escape from harsh winter weather. By understanding the typical temperature variations across different regions and packing accordingly, you can ensure a comfortable and memorable trip. Remember to check the specific forecast closer to your travel dates for the most accurate information. Enjoy your Southern California adventure!