Annual mean 27°C · wettest around March · prevailing wind NE
Warmest
30.5 °C
Coldest
27.4 °C
Wettest
85%
Windiest
4.1 m/s
Prevailing
NE
3.0 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
never good
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in São Luís over the whole year is 27°C. November is the hottest month, with highs of about 31°C; March is the coldest, with lows of about 24°C. The rainy (wet) season in São Luís runs from January to July, peaking in March with a 65% chance of rain on a given day. The dry season is August to December; October is the driest month, at 16%. Winds in São Luís are highest in October, averaging 3.3 m/s (12 km/h), and lightest in April, at 1.5 m/s (5 km/h). The prevailing wind is from the NE. The clearest skies in São Luís come in August, when the sky is typically 38% covered; March is the cloudiest month, at 73%.
Month by month São Luís climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
29°C
25°C
32°C
52%
65%
2.3 m/s
4
57
1
February
28°C
25°C
32°C
54%
70%
1.9 m/s
4
55
0
March
28°C
24°C
32°C
65%
73%
1.7 m/s
4
52
0
April
28°C
25°C
33°C
50%
66%
1.5 m/s
2
45
0
May
29°C
25°C
34°C
52%
59%
1.7 m/s
1
39
0
June
29°C
25°C
33°C
52%
53%
1.5 m/s
0
51
0
July
29°C
25°C
33°C
45%
46%
2.0 m/s
0
57
0
August
30°C
25°C
33°C
25%
38%
2.6 m/s
0
62
0
September
30°C
26°C
33°C
22%
41%
3.2 m/s
0
63
0
October
30°C
26°C
33°C
16%
40%
3.3 m/s
0
58
0
November
31°C
26°C
33°C
28%
46%
3.1 m/s
0
55
0
December
30°C
26°C
33°C
33%
54%
2.9 m/s
1
53
0
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short São Luís weather by season
Year round, São Luís has days of about 28°C at their warmest in March, its coolest month, and 31°C in November, its warmest; the coolest hours of the day run from 24°C to 26°C through the year, and the average temperature over the year is 27°C around the clock. Rain is most likely around March and least likely around October. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
São Luís weather in winterJune to August
High 29°CLow 25°CRain 41%
Winter in São Luís has typical daily highs of about 29°C and lows of about 25°C, with a 41% chance of rain on a given day.
São Luís weather in springSeptember to November
High 30°CLow 26°CRain 22%
Spring in São Luís has typical daily highs of about 30°C and lows of about 26°C, with a 22% chance of rain on a given day.
São Luís weather in summerDecember to February
High 29°CLow 25°CRain 47%
Summer in São Luís has typical daily highs of about 29°C and lows of about 25°C, with a 47% chance of rain on a given day.
São Luís weather in autumnMarch to May
High 28°CLow 25°CRain 56%
Autumn in São Luís has typical daily highs of about 28°C and lows of about 25°C, with a 56% chance of rain on a given day.
When is the rainy season in São Luís?
The rainy (wet) season in São Luís runs from January to July, peaking in March with a 65% chance of rain on a given day. The dry season is August to December; October is the driest month, at 16%.
What time of year is São Luís windiest?
Winds in São Luís are highest in October, averaging 3.3 m/s (12 km/h), and lightest in April, at 1.5 m/s (5 km/h). The prevailing wind is from the NE.
What is the average temperature in São Luís year round?
The average temperature in São Luís over the whole year is 27°C. November is the hottest month, with highs of about 31°C; March is the coldest, with lows of about 24°C.