When to go · Brazil

When to go to São Luís

Twelve months of averages for São Luís, and what they say about when to go.

When to go

What the averages say

Mean daily highs and lows and the month's rain, averaged over 2001 to 2020.

On these averages, São Luís has a mean high between 18°C and 32°C and under 150 mm of rain in June to August and October to December.

Hot months (a mean high of 32°C or more): September.
Wet months (150 mm of rain or more): January to May.
Humid months (a high of 25°C or more with relative humidity of 70% or more): January to December.
The warmest month is September (32°C) and the coolest April (28°C). The wettest is April (357 mm) and the driest October (15 mm); about 1,717 mm of rain falls in a year.

How these sentences are worded

Each sentence is written from the figures by fixed rules, and says no more than they do. Mild to warm: a mean daily high from 18°C up to 32°C. Hot: 32°C or more. Cool: 10°C up to 18°C. Cold: under 10°C. Dry: under 50 mm of rain in the month; wet: 150 mm or more. Humid: a high of 25°C or more with relative humidity of 70% or more. A month is described as good for going when it is mild to warm and not wet.

São Luís: highs, lows and rainHighLowRain

The year at a glance

Mild to warm and dry
Mild to warm, humid or showery
Hot
Cool
Wet
Cold

JanWet
FebWet
MarWet
AprWet
MayWet
JunMild–warm, mixed
JulMild–warm, mixed
AugMild–warm, mixed
SeptHot
OctMild–warm, mixed
NovMild–warm, mixed
DecMild–warm, mixed

Month by month

Every month in São Luís

The whole year, with humidity, cloud and the sunlight reaching the ground.

Climate in São Luís by month: mean daily high and low, rain, and what the month is like
Month	High	Low	Rain	Humidity	Cloud	Sunlight (kWh/m²/day)	High in Dubai	What it is like
January	30°C	25°C	191 mm	82%	73%	4.9	23°C	Wet
February	29°C	25°C	247 mm	87%	81%	4.8	24°C	Wet
March	28°C	25°C	322 mm	89%	82%	4.7	27°C	Wet
April	28°C	25°C	357 mm	91%	82%	4.6	31°C	Wet
May	28°C	25°C	238 mm	90%	67%	4.8	35°C	Wet
June	29°C	25°C	149 mm	87%	50%	5	37°C	Mild to warm, humid or showery
July	29°C	24°C	88 mm	84%	38%	5.2	39°C	Mild to warm, humid or showery
August	31°C	24°C	23 mm	77%	26%	5.8	39°C	Mild to warm, humid or showery
September	32°C	25°C	23 mm	73%	25%	6	37°C	Hot
October	31°C	25°C	15 mm	72%	34%	6	34°C	Mild to warm, humid or showery
November	31°C	25°C	17 mm	73%	46%	5.7	29°C	Mild to warm, humid or showery
December	31°C	25°C	47 mm	75%	58%	5.3	25°C	Mild to warm, humid or showery

The Dubai column is Dubai's mean daily high, for comparison.

Modelled averages for an area about 50 km across, not a weather station's record: NASA POWER climatology, 2001–2020. These data were obtained from the NASA Langley Research Center (LaRC) POWER Project funded through the NASA Earth Science/Applied Science Program.

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Plan a trip to São Luís More about São Luís When to go

Month

High

Low

Rain

Humidity

Cloud

Sunlight (kWh/m²/day)

High in Dubai

What it is like

January

30°C

25°C

191 mm

82%

73%

4.9

23°C

Wet

February

29°C

25°C

247 mm

87%

81%

4.8

24°C

Wet

March

28°C

25°C

322 mm

89%

82%

4.7

27°C

Wet

April

28°C

25°C

357 mm

91%

82%

4.6

31°C

Wet

May

28°C

25°C

238 mm

90%

67%

4.8

35°C

Wet

June

29°C

25°C

149 mm

87%

50%

37°C

Mild to warm, humid or showery

July

29°C

24°C

88 mm

84%

38%

5.2

39°C

Mild to warm, humid or showery

August

31°C

24°C

23 mm

77%

26%

5.8

39°C

Mild to warm, humid or showery

September

32°C

25°C

23 mm

73%

25%

37°C

Hot

October

31°C

25°C

15 mm

72%

34%

34°C

Mild to warm, humid or showery

November

31°C

25°C

17 mm

73%

46%

5.7

29°C

Mild to warm, humid or showery

December

31°C

25°C

47 mm

75%

58%

5.3

25°C

Mild to warm, humid or showery