southern california temperatures in december

3 min read 27-02-2025

southern california temperatures in december

Meta Description: Planning a December getaway to Southern California? Discover what to expect with our comprehensive guide to Southern California's December temperatures, encompassing coastal regions, deserts, and mountains. Learn about average highs and lows, rainfall, and packing tips for a perfect Southern California winter escape.

Southern California Weather in December: A Regional Overview

Southern California boasts a diverse geography, leading to varied December weather. From the sunny beaches to the snow-capped mountains, understanding regional differences is key to planning your trip. This guide breaks down the typical temperatures and conditions you can expect in different parts of Southern California during December.

Coastal Regions (Los Angeles, San Diego)

December in coastal Southern California offers pleasant temperatures, ideal for outdoor activities. Expect daytime highs averaging in the mid-60s°F (18°C) to low 70s°F (21°C). Evenings are cooler, dipping into the 50s°F (10°C) to low 60s°F (16°C). Rainfall is possible, but generally light and infrequent. Sunshine is abundant, making it perfect for beach walks and sightseeing.

What to Pack for the Coast:

Layers are essential: a light jacket or sweater for evenings, a t-shirt or tank top for warmer days.
Comfortable walking shoes for exploring.
Sunscreen, sunglasses, and a hat for sunny days.
A light rain jacket or umbrella, just in case.

Inland Valleys (Inland Empire)

The inland valleys, such as the Inland Empire (Riverside and San Bernardino counties), experience warmer days and cooler nights compared to the coast. Expect daytime highs in the mid-70s°F (24°C) to low 80s°F (27°C), while nighttime lows can drop into the 40s°F (4°C) to low 50s°F (10°C). Rainfall is similar to the coast, relatively infrequent but possible.

What to Pack for the Inland Valleys:

A mix of clothing suitable for both warm days and cool nights.
Long pants or jeans for evenings.
A light jacket or sweater.
Comfortable walking shoes.

Deserts (Palm Springs, Joshua Tree)

Southern California's deserts offer warm, sunny days in December, perfect for hiking and exploring. Daytime highs frequently reach the mid-70s°F (24°C) to low 80s°F (27°C), while nighttime temperatures can drop significantly into the 40s°F (4°C) to low 50s°F (10°C). Rainfall is minimal.

What to Pack for the Desert:

Layers are crucial: lightweight clothing for the day and warmer layers for the evenings.
Sturdy hiking shoes if you plan on exploring trails.
Sunscreen, a hat, and sunglasses are essential.

Mountains (Big Bear, Lake Arrowhead)

The mountains experience dramatically different weather. Expect cooler temperatures, with daytime highs in the 40s°F (4°C) to low 50s°F (10°C), and nighttime lows frequently below freezing. Snow is a possibility, particularly at higher elevations.

What to Pack for the Mountains:

Warm layers: a heavy coat, sweaters, thermal underwear.
Waterproof and windproof outerwear.
Warm hats, gloves, and scarves.
Sturdy, waterproof hiking boots.

December Rainfall in Southern California

While Southern California enjoys relatively dry weather, December can bring some rainfall, though generally light. The coastal areas and mountains tend to receive more precipitation than the inland valleys and deserts. Check the forecast before your trip, especially if you have outdoor plans.

Planning Your Southern California December Trip

Knowing the expected temperatures for each region helps you pack appropriately and enjoy your trip. Remember to check the specific forecast closer to your travel dates, as weather conditions can vary. Enjoy your Southern California adventure!

Frequently Asked Questions (FAQs)

Q: What is the average temperature in Los Angeles in December?

A: The average high in Los Angeles during December is in the mid-60s°F (18°C), with lows in the 50s°F (10°C).

Q: Does it snow in Southern California in December?

A: Snow is possible in the higher mountain areas like Big Bear and Lake Arrowhead, but unlikely in lower elevations.

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

A: December offers pleasant weather in many parts of Southern California, making it a great time to visit for many activities. Just be aware of regional temperature variations.

Q: How much rain can I expect in Southern California in December?

A: Rainfall in December is generally light and infrequent, but it's always a good idea to check the forecast before your trip.

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