San José Weather in December

December in San José brings moderate temperatures around 17°C (63°F) during the day, dropping to 13°C (55°F) at night, with some rainfall expected.

Rainfall in San José in December

Historically, the month has about 11 days of rain, averaging 31 mm (1.2 in) in total. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.

Temperature in San José in December

Expect highs of 17°C (63°F) in San José in December, with nights dropping to around 13°C (55°F). December is a notable month of the winter season. The difference between afternoon and evening temperatures is usually noticeable. Nights drop to around 13°C (55°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

Sunshine in San José in December

The month experiences a moderate amount of sunlight, with 177 hours of sunshine. This provides a nice balance between sunshine and clouds.

If you prefer dry days with pleasant temperatures, December may not be the ideal month to visit San José. Our weather planner can help you explore destinations with more pleasant weather conditions.