Rio Grande Weather in December

Rio Grande in December averages 10°C (50°F) during the day and 1°C (34°F) at night. This is the wettest month of the year, and part of the winter season.

Rainfall in Rio Grande in December

The month brings the most rain, so be prepared with an umbrella for the occasional shower. Typically around 11 days of rainfall are expected, averaging 127 mm (5 in) for the month. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Rio Grande in December

If you're visiting Rio Grande in December, expect highs of 10°C (50°F) and overnight lows around 1°C (34°F). Experience the winter season in December. It stays cool throughout the day, so warm layers are a good idea from morning to evening. Nights fall to 1°C (34°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.

Average water temperature in December

With water temperatures around 6°C (43°F), swimming isn't really an option for most visitors. The cold sets in quickly and a wetsuit won't fully solve it.

December in Rio Grande has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.