weathermetro
Cities / Brazil
/ Piauí
☀️ São Luís weather
Clear sky. No rain expected in the next few hours.
Feels like 31° Wind 4 km/h E Humidity 31% UV 0 Air Fair ☀ 05:53 - 17:52
Right now it is 31° in São Luís with clear skies and today's high is 38° with an overnight low of 24° . The sun rises at 05:53 and sets at 17:52, giving 11h 59m of daylight. Over the coming week highs range from 38° to 40° - a steady stretch with little day-to-day change.
São Luís is in Piauí, Brazil, sitting 319 m above sea level. Local time is America/Fortaleza (UTC−3), and every time on this page is shown in it.
Next 24 hours - temperature
24°
33°
41°
40°
24°
18:00 · 32.1° · 0 mm
19:00 · 30.7° · 0 mm
20:00 · 30.1° · 0 mm
21:00 · 29.9° · 0 mm
22:00 · 29° · 0 mm
23:00 · 29.2° · 0 mm
00:00 · 29.7° · 0 mm
01:00 · 27.4° · 0 mm
02:00 · 26.5° · 0 mm
03:00 · 26.6° · 0 mm
04:00 · 25.9° · 0 mm
05:00 · 24.7° · 0 mm
06:00 · 24.3° · 0 mm
07:00 · 26.9° · 0 mm
08:00 · 29.9° · 0 mm
09:00 · 32.1° · 0 mm
10:00 · 34.1° · 0 mm
11:00 · 35.8° · 0 mm
12:00 · 37.5° · 0 mm
13:00 · 39.1° · 0 mm
14:00 · 40.2° · 0 mm
15:00 · 40.2° · 0 mm
16:00 · 39.2° · 0 mm
17:00 · 37.8° · 0 mm
Precipitation
18:00 · 0 mm
18:00
19:00 · 0 mm
20:00 · 0 mm
21:00 · 0 mm
21:00
22:00 · 0 mm
23:00 · 0 mm
00:00 · 0 mm
00:00
01:00 · 0 mm
02:00 · 0 mm
03:00 · 0 mm
03:00
04:00 · 0 mm
05:00 · 0 mm
06:00 · 0 mm
06:00
07:00 · 0 mm
08:00 · 0 mm
09:00 · 0 mm
09:00
10:00 · 0 mm
11:00 · 0 mm
12:00 · 0 mm
12:00
13:00 · 0 mm
14:00 · 0 mm
15:00 · 0 mm
15:00
16:00 · 0 mm
17:00 · 0 mm
Hour by hour
TIME TEMP FEELS RAIN CONDITIONS
18:00
☀️
32.1°
31.7°
-
Clear sky
19:00
☀️
30.7°
30.6°
-
Clear sky
20:00
☀️
30.1°
30°
-
Clear sky
21:00
🌤️
29.9°
29.5°
-
Mostly clear
22:00
☀️
29°
28.2°
-
Clear sky
23:00
☁️
29.2°
28.5°
-
Overcast
00:00
☁️
29.7°
28°
-
Overcast
01:00
☁️
27.4°
26.3°
-
Overcast
02:00
⛅
26.5°
25.5°
-
Partly cloudy
03:00
☁️
26.6°
25.2°
-
Overcast
04:00
☁️
25.9°
24.4°
-
Overcast
05:00
☁️
24.7°
23.8°
-
Overcast
☀️
TodaySeptember 1st
Avg 30° Low 24° at 04:00
High 38° at 15:00
Feels 36° Wind ~17 km/h
Partly Cloudy
Cloudy
Clear
00:00
28°
02:00
25°
04:00
24°
06:00
25°
08:00
28°
10:00
32°
12:00
36°
14:00
37°
16:00
37°
18:00
32°
20:00
30°
22:00
29°
☀️
WednesdaySeptember 2nd
Avg 32° Low 24° at 06:00
High 40° at 14:00
Wind ~14 km/h
Cloudy
Clear
00:00
30°
02:00
27°
04:00
26°
06:00
24°
08:00
30°
10:00
34°
12:00
38°
14:00
40°
16:00
39°
18:00
33°
20:00
31°
22:00
30°
☀️
ThursdaySeptember 3rd
Avg 32° Low 25° at 06:00
High 39° at 15:00
Feels 37° Wind ~21 km/h
Clear
Clear
00:00
29°
02:00
27°
04:00
27°
06:00
25°
08:00
28°
10:00
34°
12:00
37°
14:00
39°
16:00
38°
18:00
33°
20:00
32°
22:00
34°
☀️
FridaySeptember 4th
Avg 32° Low 26° at 06:00
High 38° at 15:00
Feels 36° Wind ~17 km/h
Cloudy
Clear
Cloudy
Clear
00:00
32°
02:00
30°
04:00
28°
06:00
26°
08:00
29°
10:00
32°
12:00
36°
14:00
38°
16:00
37°
18:00
34°
20:00
31°
22:00
29°
☀️
SaturdaySeptember 5th
Avg 31° Low 23° at 06:00
High 39° at 14:00
Feels 36° Wind ~19 km/h
Clear
00:00
27°
02:00
26°
04:00
25°
06:00
23°
08:00
29°
10:00
33°
12:00
37°
14:00
39°
16:00
38°
18:00
33°
20:00
30°
22:00
28°
☀️
SundaySeptember 6th
Avg 31° Low 24° at 06:00
High 39° at 14:00
Wind ~13 km/h
Clear
00:00
30°
02:00
27°
04:00
25°
06:00
24°
08:00
28°
10:00
33°
12:00
37°
14:00
39°
16:00
38°
18:00
33°
20:00
30°
22:00
29°
☀️
MondaySeptember 7th
Avg 32° Low 25° at 06:00
High 40° at 15:00
Feels 37° Wind ~15 km/h
Clear
00:00
28°
02:00
30°
04:00
28°
06:00
25°
08:00
28°
10:00
33°
12:00
37°
14:00
40°
16:00
38°
18:00
33°
20:00
30°
22:00
29°
☀️
TuesdaySeptember 8th
Avg 32° Low 24° at 06:00
High 40° at 14:00
Wind ~15 km/h
Clear
00:00
29°
02:00
29°
04:00
28°
06:00
24°
08:00
28°
10:00
33°
12:00
38°
14:00
40°
16:00
38°
18:00
34°
20:00
31°
22:00
30°
⛅
WednesdaySeptember 9th
Avg 31° Low 26° at 06:00
High 36° at 14:00
Feels 34° Wind ~23 km/h
Clear
Partly Cloudy
00:00
28°
02:00
29°
04:00
28°
06:00
26°
08:00
29°
10:00
32°
12:00
35°
14:00
36°
16:00
35°
18:00
33°
20:00
32°
22:00
30°
☀️
ThursdaySeptember 10th
Avg 29° Low 23° at 05:00
High 37° at 15:00
Feels 33° Wind ~26 km/h
Clear
00:00
28°
02:00
25°
04:00
23°
06:00
23°
08:00
26°
10:00
30°
12:00
34°
14:00
37°
16:00
36°
18:00
34°
20:00
28°
22:00
24°
☀️
FridaySeptember 11th
Avg 27° Low 22° at 02:00
High 34° at 14:00
Feels 30° Wind ~26 km/h
Clear
Partly Cloudy
Clear
00:00
23°
02:00
22°
04:00
22°
06:00
23°
08:00
24°
10:00
27°
12:00
32°
14:00
34°
16:00
33°
18:00
30°
20:00
28°
22:00
26°
☀️
SaturdaySeptember 12th
Avg 28° Low 22° at 05:00
High 35° at 15:00
Feels 32° Wind ~25 km/h
Clear
00:00
24°
02:00
23°
04:00
22°
06:00
22°
08:00
25°
10:00
29°
12:00
33°
14:00
35°
16:00
34°
18:00
32°
20:00
28°
22:00
26°
☀️
SundaySeptember 13th
Avg 28° Low 22° at 05:00
High 37° at 14:00
Feels 34° Wind ~22 km/h
Clear
00:00
25°
02:00
24°
04:00
23°
06:00
22°
08:00
26°
10:00
30°
12:00
34°
14:00
37°
16:00
35°
18:00
31°
20:00
28°
22:00
26°
☀️
MondaySeptember 14th
Avg 29° Low 23° at 05:00
High 38° at 14:00
Feels 36° Wind ~21 km/h
Clear
Clear
00:00
25°
02:00
25°
04:00
24°
06:00
23°
08:00
27°
10:00
32°
12:00
36°
14:00
38°
16:00
36°
18:00
32°
20:00
29°
22:00
27°
⛅
TuesdaySeptember 15th
Avg 31° Low 24° at 05:00
High 40° at 15:00
Feels 38° Wind ~19 km/h
Clear
Partly Cloudy
Clear
00:00
27°
02:00
25°
04:00
24°
06:00
24°
08:00
28°
10:00
32°
12:00
37°
14:00
40°
16:00
38°
18:00
33°
20:00
30°
22:00
29°
☀️
WednesdaySeptember 16th
Avg 31° Low 23° at 05:00
High 40° at 15:00
Feels 37° Wind ~19 km/h
Clear
00:00
29°
02:00
26°
04:00
24°
06:00
23°
08:00
29°
10:00
34°
12:00
38°
14:00
40°
16:00
38°
18:00
35°
20:00
32°
22:00
30°
Sun
☀️ Sunrise 05:53 · Sunset 17:52
11h 59m of daylight · America/Fortaleza
Air quality
PM2.5 11.7 µg/m³ - Fair
Fine for almost everyone; unusually sensitive people may notice it on a long run.
Source: Copernicus CAMS, updated hourly.
Common questions about São Luís weather
Will it rain in São Luís today?
No rain is in the forecast for São Luís today.
What is the temperature in São Luís right now?
It is 31° in São Luís right now. Today runs between a low of 24° and a high of 38° .
What time is sunrise and sunset in São Luís?
The sun rises at 05:53 and sets at 17:52 local time in São Luís today, giving 11h 59m of daylight.
What is the air quality in São Luís?
PM2.5 in São Luís is currently 11.7 µg/m³, which counts as Fair on the European air-quality index. Fine for almost everyone; unusually sensitive people may notice it on a long run.
How accurate is the São Luís forecast, and how far ahead does it go?
This page shows 16 days ahead, refreshed every hour. It blends ECMWF, NOAA GFS and whichever national high-resolution model covers São Luís best. The first three days are the dependable part - day one is usually within a degree or two - and accuracy falls off steadily after day five, so read the far end as a trend rather than a plan. We publish our measured error against real station observations on the accuracy page.
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© 2026 WeatherMetro · Weather data: ECMWF, NOAA, DWD, Météo-France, ECCC, MeteoSwiss and others (CC-BY 4.0) · Air quality & history: Copernicus CAMS / C3S · Location data: GeoNames (CC-BY) · Alerts: NWS, MeteoAlarm, ECCC