Sonoma Weather in December

Thinking of visiting Sonoma in December? Expect moderate temperatures reaching 14°C (57°F) during the day, dropping to 4°C (39°F) at night, and be prepared for the wettest month of the year.

Rainfall in Sonoma in December

This month sees the most rain, so carrying an umbrella will ensure you stay dry. Past climate data indicates that roughly 12 days will see rain, totalling around 134 mm (5.3 in) 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 Sonoma in December

December in Sonoma brings moderate temperatures, with highs of 14°C (57°F) and nights around 4°C (39°F). December is part of the winter season. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. Nights drop to 4°C (39°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet. Experience the year's most moderate temperatures in December.

Sunshine in Sonoma in December

With about 160 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.

If you're looking for dry conditions and comfortable temperatures, December may not be the ideal month to visit Sonoma. Our weather planner can help you explore destinations with more pleasant weather conditions.