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Sao Luis in January: Weather, Average temperature and Climate

Planning a trip and want to know what the weather in Sao Luis in January will be like? Take a look at our weather guide for Sao Luis, based on historical data.
Check flight prices to Sao Luis on Avionero:
January

Weather in Sao Luis in January 2026

OK Weather
Warm
🌧️
Rainy
If you plan to visit Sao Luis in January, the weather is typically alright, with an average high temperature of +29°C during the day and approximately 0 sunny days. Expect some rainy, though, as there are typically 28 rainy days in the month and around 230 mm of precipitation. The weather is changeable so you may have to pack for every eventuality. Search flights in one click on Avionero.
Good to know:
  • January is usually the coldest month of the year in Sao Luis;

Average weather

☀️
+29°C
Avg. max. temperature
+21°C
Min.
+34°C
Max.
230 mm
Total precipitation
82%
Avg. humidity
3 m/s
Avg. wind
0 ☀️
Sunny Days
1 ⛅️
Cloudy
28 🌦
Rainy
Our opinion: Sao Luis has OK weather in January.

Average temperature in Sao Luis in January

Here are the expected maximum, average and minimum temperatures in Sao Luis for January based on the historical data.
Last Year
Historical Data

Going from a maximum of +33°C during the day to a minimum of +21°C during the night, the temperature in January averages around +31°C.

The average maximum temperature goes down 8% by the end of the month, compared with the beginning of the month, from +32°C to +31°C.

Is Sao Luis warm or cold in January?

Sao Luis is typically warm in January.

Maximum temperatures go down compared to the previous month from +31°C to +29°C. The minimum temperature also goes down from +26°C to +25°C.

It’s generally warm, but pack a long-sleeve shirt for evenings.

January is the coldest month in Sao Luis, here is the comparison with other months:

Climate in Sao Luis in January

Sao Luis weather looks like this, on average, in January and the surrounding months.
DecemberJanuaryFebruary
Avg. temperature
+31°C+29°C+29°C
Min. temperature
+20°C+21°C+22°C
Max. temperature
+34°C+34°C+34°C
Rainfall
88 mm230 mm320 mm
Wind
4 m/s3 m/s3 m/s
Humidity
77%82%84%
Air pressure
1009 HPa1010 HPa1010 HPa
Sunny days
200
Cloudy days
610
Rainy days
232826
Snowy days
000

January weather is still as ok as in December. It’s getting colder in January. From +31°C in the day, the average maximum temperature lowers to +29°C. Prepare for more rain. Average rainfall goes from 88 mm to 230 mm. Humidity rises from 77% to 82%. Winds are calmer in comparison to December, going down from 4 m/s to 3 m/s on average. The days becoming less sunny, going from 2 sunny days in December to 0 in January.

February brings much the same weather, it remains ok.

Wind

Wind speed in Sao Luis in January based on historical data.
Last Year
Historical Data

The average wind speed is 3 m/s getting up to 5 m/s which is a light breeze; barely moving the tree leaves.

The average wind speed in Sao Luis is gradually increasing during January, going from 3 m/s to 3 m/s over the course of the month.

Rain

Amount of rainfall in mm during January in Sao Luis based on historical data.
Last Year
Historical Data
Typically, there is a 97% chance of rain on an average day in January, with total rainfall of approximately 158 mm. The maximum amount of rainfall per day is around 19 mm, which is considered light rain. January is a pretty wet month with over 30 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of galoshes.
Here’s how January is compared with other months in the amount of precipitation, total mm:
Sao Luis wettest month is March, where a typical day has a 97% chance of precipitation and 437 mm of rainfall per day. September, on the other hand, is the driest month with a mere 43% chance of precipitation and 13 mm of rainfall per day.

How was the weather last January in Sao Luis?

This is the weather in Sao Luis in January 2024:
1 January
🌧️
+32°C
2 January
☀️
+31°C
3 January
☀️
+31°C
4 January
🌧️
+32°C
5 January
☀️
+31°C
6 January
☁️
+32°C
7 January
🌧️
+32°C
8 January
🌧️
+32°C
9 January
☀️
+33°C
10 January
🌧️
+30°C
11 January
🌧️
+32°C
12 January
🌧️
+32°C
13 January
🌧️
+31°C
14 January
🌧️
+33°C
15 January
🌧️
+31°C
16 January
🌧️
+30°C
17 January
🌧️
+32°C
18 January
🌧️
+31°C
19 January
🌧️
+25°C
20 January
🌧️
+31°C
21 January
☀️
+31°C
22 January
🌧️
+33°C
23 January
🌧️
+32°C
24 January
🌧️
+28°C
25 January
🌧️
+26°C
26 January
🌧️
+30°C
27 January
🌧️
+32°C
28 January
☀️
+31°C
29 January
🌧️
+31°C
30 January
🌧️
+27°C
31 January
🌧️
+31°C
In January 2024 Sao Luis had 6 sunny days, 1 cloudy days, and 24 rainy days. The average maximum temperature was +31°C, with an absolute maximum of +33°C and a minimum of +25°C. The average humidity was 83%, with a maximum of 100% and a minimum of 53%. The average wind speed was 3 m/s, with a maximum of 8 m/s and a minimum of 0 m/s.
Are you planning a trip in January?

Climate Change over Years

This is how Sao Luis climate have been changing during last 43 years period.

The climate in Sao Luis in January has not changed much over the last 43 years.

The average temperature was the lowest in 1985 (+29°C) and the highest in 2017 (+31°C). The driest year was 1983 with only 1125 mm of rainfall, and the wettest year was 1985 with 3380 mm.

FAQ

Frequently asked questions about the weather in Sao Luis in January:

Is January a good time to visit Sao Luis?

It’s always a good time to visit Sao Luis, but the weather is changeable in January, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.

Can you sunbathe in Sao Luis in January?

January is warm in Sao Luis. You may enjoy some beach or pool time in the day, but pack something a tad warmer for the evening.

Is Sao Luis rainy in January?

Sao Luis is often rainy in January. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.

Is it sunny in Sao Luis in January?

Usually, it’s not very sunny in Sao Luis in January, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.

Other cities in Brazil

Check out the weather for other cities in Brazil.

Monthly weather in Sao Luis

Source of the data

For this page, we’ve looked at the typical weather in Sao Luis, based on historical hourly weather data from January 1, 1979, to December 31, 2023.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.