São Luis Weather in December

December in São Luis sees daytime temperatures around 17°C (63°F) and lows of 9°C (48°F) at night. As the wettest month of the year, keep in mind that rainfall is at its highest.

Rainfall in São Luis in December

As the rainiest month, carrying an umbrella is advisable to manage the frequent rain. Expect around 12 days of rain based on historical data, with 75 mm (3 in) average. Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.

Temperature in São Luis in December

If you're visiting São Luis in December, expect highs of 17°C (63°F) and overnight lows around 9°C (48°F). The month of December belongs to the winter season. Conditions are often most pleasant around the middle of the day. Nights fall to 9°C (48°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.

Sunshine in São Luis in December

The city usually sees around 156 hours of sunlight, indicating a moderately sunny period.

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