Santa Ynez Weather in December

December in Santa Ynez averages 18°C (64°F) during the day and 3°C (37°F) at night. Quite a bit of rainfall is typical this month, with around 83 mm (3.3 in) on average. An umbrella is a good idea.

Rainfall in Santa Ynez in December

Historically, December sees about 9 days of rain, with a monthly average of 83 mm (3.3 in). When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Santa Ynez in December

Temperatures in Santa Ynez in December top out at 18°C (64°F) and drop to 3°C (37°F) overnight. December is in the winter season. Conditions are often most pleasant around the middle of the day. Nights drop to 3°C (37°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet. Though the coolest month of the year, the temperatures are far from cold. With still warm days.

Sunshine in Santa Ynez in December

With about 186 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. January, February, March, April, May, June, October and November typically offer the best weather for Santa Ynez.