Oceanside Weather in December

Thinking of visiting Oceanside in December? Expect pleasant temperatures reaching 18°C (64°F) during the day, dropping to 6°C (43°F) at night, and be prepared for the wettest month of the year.

Rainfall in Oceanside in December

This month sees the most rain, so carrying an umbrella will ensure you stay dry. Historically, December sees about 7 days of rain, with a monthly average of 68 mm (2.7 in). The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Oceanside in December

Daytime temperatures in Oceanside reach 18°C (64°F) in December, dropping to 6°C (43°F) at night. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. Nights drop to 6°C (43°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet. Expect the mildest temperatures of the year this month, yet still enjoyably warm.

Sunshine in Oceanside in December

Expect a lot of sunshine this month, with about 231 hours of sun. These sunny conditions add to the overall experience.

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