São Luís Weather in December

December in São Luís brings very high temperatures, with highs of 31°C (88°F) and nights dropping to 26°C (79°F). Rainfall is on the higher side this month, averaging around 83 mm (3.3 in), so keep a rain jacket handy.

Rainfall in São Luís in December

Rain is expected on roughly 12 days, totalling around 83 mm (3.3 in) for the month. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.

Temperature in São Luís in December

Expect highs of 31°C (88°F) in São Luís in December, with nights dropping to around 26°C (79°F). The hottest part of the day is usually in the afternoon, so lighter clothing can help you stay comfortable. With overnight lows of 26°C (79°F), nights stay very warm. Air conditioning makes a real difference if you're sensitive to heat. A cold shower before bed can also help you get to sleep more comfortably.

Sunshine in São Luís in December

Expect sunny days throughout the month, with an estimated 206 hours of sunshine. This makes it a pleasant time to visit São Luís.

If your ideal day consists of dry skies and pleasant temperatures, September and October typically offer the best circumstances for São Luís.

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Brazil, check out our São Luís's climate page.

São Luís Temperature in December

Min Temperature 26°C (79°F)  

Max Temperature 31°C (88°F)  

Chance of Rain 39%  

Precipitation 83 mm (3.3 in)  

Rainy days 12 days  

Humidity 81% *  

Sunshine 206 hours *  

Percentage Sunshine *  

What to Wear in São Luís in December

Warm but pleasant conditions in São Luís in December. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Expect heavy rainfall, so bring good rain protection and waterproof bags. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in São Luís in December

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

7/10

Walking

7/10

Camping

7/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Brazil, check out our São Luís's climate page.

More climate data for São Luís

Temperature Rainfall Sunshine Humidity

See the full São Luís climate overview or explore weather in Brazil.