San Clemente Weather in December

December in San Clemente averages 19°C (66°F) during the day and 8°C (46°F) at night. It is the wettest month of the year, with 72 mm (2.8 in) of rainfall on average, so waterproof gear is a must.

Rainfall in San Clemente in December

With frequent rain showers this month, having an umbrella on hand will keep you dry. Records from the past 30 years suggest around 8 days of rain, with 72 mm (2.8 in) average for the month. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.

Temperature in San Clemente in December

In December, San Clemente sees pleasant temperatures, with highs of 19°C (66°F). Nights drop to around 8°C (46°F). Temperatures can feel cooler in the morning and evening, so layering is often the best approach. With overnight lows of 8°C (46°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets. Enjoy a month of mild temperatures, still offering warmth and comfort throughout.

Sunshine in San Clemente in December

Expect sunny days throughout the month, with an estimated 205 hours of sunshine. This makes it a pleasant time to visit San Clemente.

December in San Clemente has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.