Santa Maria Weather in December

During December, Santa Maria experiences moderate daytime temperatures of 17°C (63°F) and cooler nights around 13°C (55°F). Expect quite a bit of rainfall. Around 74 mm (2.9 in) is typical.

Rainfall in Santa Maria in December

Typically, you can expect about 11 days of rain this month, with 74 mm (2.9 in) on average. Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.

Temperature in Santa Maria in December

If you're visiting Santa Maria in December, expect highs of 17°C (63°F) and overnight lows around 13°C (55°F). This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. Nights cool down to 13°C (55°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.

Wind Speed in Santa Maria in December

Average wind speeds reach 3 m/s (6 knots) in December, creating light breezes that feel pleasant throughout the day. Some days are calmer, while others bring slightly more active breezes.

Average water temperature in December

At 18°C (64°F), the water is getting there, comfortable enough for most swimmers, though those used to warmer seas may still find it a touch cool.

December in Santa Maria can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.