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.

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Sonoma's climate page.

Sonoma Temperature in December

Min Temperature 4°C (39°F)  

Max Temperature 14°C (57°F)  

Chance of Rain 38%  

Precipitation 134 mm (5.3 in)  

Rainy days 12 days  

Sunshine 160 hours *  

Percentage Sunshine 55% *  

* Data from: Healdsburg, the United States of America (50 KM, 31 Miles).

What to Wear in Sonoma in December

Pack for changing conditions in Sonoma in December. Bring a mix of short and long sleeves, a warm layer like a hoodie or light jacket, and comfortable pants. The key is being able to add or remove layers as the days goes by. Prepare for significant rainfall with proper waterproof clothing and shoes. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Sonoma in December

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

5/10

Cycling

5/10

Walking

5/10

Camping

3/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Sonoma's climate page.

More climate data for Sonoma

Temperature Rainfall Sunshine

See the full Sonoma climate overview or explore weather in the United States of America.