San Luis Weather in December

San Luis in December sees very high daytime temperatures of 31°C (88°F) and nighttime lows of 17°C (63°F). Rainfall is fairly high this month at around 101 mm (4 in), so pack a rain jacket to stay dry.

Rainfall in San Luis in December

Expect around 10 days of rain based on historical data, with 101 mm (4 in) average. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in San Luis in December

In December, San Luis sees very high temperatures, with highs of 31°C (88°F). Nights drop to around 17°C (63°F). If you're spending a lot of time outdoors, it helps to plan around the warmer part of the day. With lows of 17°C (63°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.

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