San Ramón Weather in December

Thinking of visiting San Ramón in December? Expect pleasant temperatures reaching 20°C (68°F) during the day, dropping to 12°C (54°F) at night. Heavy showers are common during the rainy season.

Rainfall in San Ramón in December

San Ramón is in the rainy season in December, with rain on around 13 days and an average of 420 mm (17 in). Showers during the rainy season tend to be heavy and can come down intensely. An umbrella is often not enough, so a poncho or waterproof jacket is a better choice.

Temperature in San Ramón in December

December in San Ramón sees highs of 20°C (68°F) and lows of 12°C (54°F) overnight. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. Nights drop to around 12°C (54°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.

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