December Weather at Disneyland The average high in Anaheim during December is around 70? and the average low is around 47?. Personally, we like these cooler daytime temperatures, as this type of weather is perfect for racing around a theme park, especially if you're carrying a backpack or have kids in tow.

"Cold" is a relative term at the original Disneyland Resort in Anaheim, but during the Christmas season, the weather is characterized by significant temperature swings. During the day, it is often quite pleasant, with highs ranging from 15°C to 21°C (60°F–70°F), often requiring only a light sweater or t-shirt under the California sun. However, as soon as the sun sets and the "Believe... In Holiday Magic" fireworks begin, the desert-adjacent climate causes the temperature to drop sharply, often hitting lows of 7°C to 10°C (45°F–50°F). In 2026, the humidity can make this feel even chillier, especially if you are sitting still for a parade or show. It is common for visitors to start the day in shorts and end it in heavy hoodies and beanies. Rainfall is also a factor in December, as it is one of Southern California's wettest months. The key to surviving a Disneyland Christmas is "layering"—bringing a packable down jacket or a windbreaker that can be stowed in a locker during the warm afternoon and brought out for the chilly evening festivities.