10-day forecast — São Luís
Refreshed hourly
Thu · Today · 12 Nov
Showers
31°
27°
0.06 in
Wind15 mph NE
Gusts28 mph
UV index12 – Extreme
Precip chance57%
Sunrise5:34 AM
Sunset5:47 PM
Fri · Tomorrow · 13 Nov
Showers
31°
27°
0.04 in
Wind12 mph NE
Gusts25 mph
UV index12 – Extreme
Precip chance46%
Sunrise5:34 AM
Sunset5:48 PM
Saturday · 14 Nov
Partly cloudy
32°
27°
0.01 in
Wind13 mph NE
Gusts24 mph
UV index10 – Very high
Precip chance21%
Sunrise5:34 AM
Sunset5:48 PM
Sunday · 15 Nov
Showers
32°
27°
0.04 in
Wind12 mph NE
Gusts23 mph
UV index8 – Very high
Precip chance53%
Sunrise5:34 AM
Sunset5:48 PM
Monday · 16 Nov
Showers
31°
26°
0.07 in
Wind12 mph NE
Gusts22 mph
UV index8 – Very high
Precip chance60%
Sunrise5:34 AM
Sunset5:48 PM
Tuesday · 17 Nov
Showers
30°
26°
0.10 in
Wind11 mph NE
Gusts24 mph
UV index8 – Very high
Precip chance69%
Sunrise5:34 AM
Sunset5:49 PM
Wednesday · 18 Nov
Partly cloudy
31°
27°
17%
Wind15 mph NE
Gusts28 mph
UV index9 – Very high
Precip chance17%
Sunrise5:35 AM
Sunset5:49 PM
Thursday · 19 Nov
Partly cloudy
31°
27°
17%
Wind14 mph NE
Gusts29 mph
UV index9 – Very high
Precip chance17%
Sunrise5:35 AM
Sunset5:49 PM
Friday · 20 Nov
Partly cloudy
31°
27°
13%
Wind14 mph NE
Gusts28 mph
UV index9 – Very high
Precip chance13%
Sunrise5:35 AM
Sunset5:49 PM
Saturday · 21 Nov
Partly cloudy
31°
27°
10%
Wind13 mph NE
Gusts28 mph
UV index9 – Very high
Precip chance10%
Sunrise5:35 AM
Sunset5:50 PM
Sunday · 22 Nov
Partly cloudy
31°
27°
12%
Wind14 mph NE
Gusts27 mph
UV index9 – Very high
Precip chance12%
Sunrise5:35 AM
Sunset5:50 PM
Monday · 23 Nov
Partly cloudy
31°
27°
0.00 in
Wind15 mph NE
Gusts29 mph
UV index8 – Very high
Precip chance20%
Sunrise5:36 AM
Sunset5:50 PM
Tuesday · 24 Nov
Showers
31°
28°
0.04 in
Wind13 mph NE
Gusts27 mph
UV index8 – Very high
Precip chance57%
Sunrise5:36 AM
Sunset5:51 PM
Wednesday · 25 Nov
Showers
31°
27°
0.03 in
Wind14 mph NE
Gusts25 mph
UV index8 – Very high
Precip chance45%
Sunrise5:36 AM
Sunset5:51 PM
About São Luís
CountryBrazil
Population917,237
ContinentSouth America
Time zoneAmerica/Fortaleza (-03:00)
Latitude-2.5300°
Longitude-44.3030°
Air QualityGood (AQI 23)
Details & indices
Wind
13 mph NE
Gusts 26 mph
Humidity
66%
Dew point 23°
Pressure
29.97 inHg
Rising
UV index
12 — Extreme
High today
Air Quality
Good
AQI 23 · US EPA
Visibility
6 mi
Reduced
Sun & moon
Sunrise5:34 AM
Sunset5:47 PM
Length of day12h 13m
Moonrise8:22 AM
Moonset8:59 PM
Moon phase🌔 Waxing Crescent
Local time10:53 AM (-03:00)
São Luís climate in September
8-year averages · when to visitBest months: January–December · September: Good
| August | September | October | |
|---|---|---|---|
| Average temperature | ▲ 27°C | 28°C | → 28°C |
| Typical high | ▲ 31°C | 32°C | → 32°C |
| Typical low | ▲ 24°C | 25°C | → 25°C |
| Water temperature | ▼ 29.5°C | 29.1°C | ▼ 28.9°C |
| Precipitation | ▼ 46 mm | 35 mm | ▲ 41 mm |
| Wet days | ▼ 16 d | 12 d | ▲ 13 d |
| Humidity | ▼ 76% | 73% | ▼ 72% |
| Sunshine per day | ▼ 11.9 h | 11.8 h | ▼ 11.6 h |
| Cloud cover | ▲ 1% | 2% | ▲ 4% |
| Midday UV | ▲ 11 | 12 | → 12 |
| Daylight | 12:02 | 12:06 | 12:10 |
| Our take | Perfect | Good | Good |
September temperatures day by day daily mean + smoothed trend · °C
September precipitation day by day mm
September UV day by day clear-sky midday value
Figures are averaged over 8 years of ERA5 reanalysis; sea temps come from ocean reanalysis, and UV is derived from solar elevation.
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NBM + global weather models
Updated: 10:53 AM
São Luís, Brazil · 2.53°S, 44.30°W · America/Fortaleza · Forecast computed for these exact coordinates