southern california temperatures in december

3 min read 10-03-2025

southern california temperatures in december

Meta Description: Planning a December trip to Southern California? Discover what to expect with our comprehensive guide to Southern California's December temperatures, encompassing average highs, lows, rainfall, and regional variations. Perfect your holiday packing list with our insights into the sunny Southern California climate!

What to Expect When You're Expecting Sunshine: December in Southern California

Southern California in December offers a delightful escape from the winter chills gripping much of the nation. While not guaranteed beach weather every day, December typically delivers pleasant temperatures perfect for outdoor activities. This guide breaks down what you can expect across various regions. Planning a trip? Knowing the average Southern California temperatures in December is key to packing the right clothes and enjoying your vacation to the fullest.

Average Temperatures Across Southern California in December

Southern California's diverse geography leads to regional temperature variations. While the coastal areas generally enjoy milder temperatures, inland regions can experience cooler evenings.

Coastal Regions (Los Angeles, San Diego, Santa Monica)

Average Highs: 65-70°F (18-21°C) Expect sunny days, ideal for exploring beaches, hiking, or simply relaxing outdoors.
Average Lows: 50-55°F (10-13°C) Evenings can be cool, so pack layers. A light jacket or sweater will likely suffice.
Rainfall: December marks the beginning of the rainy season, though rainfall is typically light and infrequent. Don't let this deter you, many days are still sunny and dry.

Inland Regions (Inland Empire, Palm Springs)

Average Highs: 60-75°F (15-24°C) Daytime temperatures are generally warmer than coastal areas, especially in desert regions like Palm Springs.
Average Lows: 35-45°F (2-7°C) Nights can get significantly cooler in the Inland Empire and desert areas. Pack warmer clothing, including a jacket and possibly even a hat and gloves.
Rainfall: Rainfall is slightly more frequent inland than on the coast.

Mountain Regions (Big Bear, Lake Arrowhead)

Average Highs: 45-55°F (7-13°C) Expect significantly cooler temperatures in the mountains. This is prime time for skiing and snowboarding.
Average Lows: 25-35°F (-4-2°C) Prepare for cold nights, with potential for frost. Pack warm layers, including a heavy coat, hat, gloves, and scarf.
Rainfall: Snow is a distinct possibility, especially at higher elevations. Check weather forecasts before heading to the mountains.

What to Pack for Your December Southern California Trip

Packing for your December trip depends heavily on your destination and activities. Here's a helpful checklist:

Coastal Areas: Layers are key. Pack lightweight shirts, sweaters, a light jacket, and comfortable walking shoes. Don't forget swimwear if you plan on venturing to the beach.
Inland Regions: Pack warmer layers, including a jacket, long pants, and potentially a hat and gloves for evenings.
Mountain Regions: Bring warm clothing, including a heavy coat, hat, gloves, scarf, and waterproof outerwear. Consider packing snow boots if you plan on hiking or visiting snowy areas.

December Events and Activities in Southern California

December in Southern California is filled with festive events. From holiday parades and ice skating rinks to Christmas tree light displays and festive markets, there's something for everyone.

Remember to check local event listings for specific dates and times. The holiday season transforms Southern California into a magical wonderland.

Frequently Asked Questions About Southern California in December

Q: Will I need a coat in Southern California in December?

A: It depends on your location and the time of day. Coastal areas will likely only require a light jacket, whereas inland regions and the mountains will require warmer layers.

Q: Does it snow in Southern California in December?

A: Snow is possible in the mountains, especially at higher elevations. Coastal and inland areas rarely see snow.

Q: Is it sunny in Southern California in December?

A: While December brings a higher chance of rain than other months, many days remain sunny and pleasant, particularly along the coast.

Q: Is December a good time to visit Southern California?

A: Absolutely! December offers pleasant weather for many activities, a festive atmosphere, and fewer crowds than peak season.

With a little planning, you can enjoy a memorable December getaway in beautiful Southern California. Remember to check the specific forecast before you travel to ensure you're prepared for the conditions. Happy travels!