Monthly climate guide
São Luís weather in October
Expect very hot weather in São Luís in October: afternoons reach about 32°C (90°F), while nights drop to around 26°C (79°F). Around 11 mm of rain falls over the month (very dry), and skies are a mix of sun and cloud. Daytime highs are about the same as September and about the same as November.
What stands out in October
- It's one of the drier stretches of the year in São Luís.
- Just 330 km apart, but São Luís runs about 6°C cooler than Teresina this month.
- Only one month is warmer in São Luís than October.
- Rain is well below São Luís's usual level (around 91% less).
Avg high
32°C
90°F
Avg low
26°C
79°F
Rainfall
11 mm
very dry
Humidity
71%
relative
Sky
35%
cloud · a mix of sun and cloud
São Luís weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 30°C / 86°F | 25°C / 78°F | 170 mm | 81% | 74% |
| February | 29°C / 85°F | 25°C / 77°F | 225 mm | 86% | 83% |
| March | 29°C / 84°F | 25°C / 77°F | 298 mm | 89% | 83% |
| April | 29°C / 84°F | 25°C / 77°F | 290 mm | 90% | 81% |
| May | 29°C / 84°F | 25°C / 78°F | 213 mm | 90% | 66% |
| June | 29°C / 85°F | 25°C / 77°F | 114 mm | 87% | 47% |
| July | 30°C / 86°F | 25°C / 76°F | 74 mm | 83% | 37% |
| August | 32°C / 89°F | 25°C / 77°F | 22 mm | 75% | 26% |
| September | 32°C / 90°F | 26°C / 78°F | 11 mm | 72% | 23% |
| October | 32°C / 90°F | 26°C / 79°F | 11 mm | 71% | 35% |
| November | 32°C / 89°F | 26°C / 79°F | 25 mm | 73% | 47% |
| December | 31°C / 88°F | 26°C / 79°F | 47 mm | 75% | 58% |
What to pack for October
- Light, breathable clothing (cotton or linen)
- A sun hat and high-SPF sunscreen
- A refillable water bottle
- Sunglasses
Is October a good time to visit São Luís?
Compare the months in the chart above to find your ideal window.
Best time to visit São Luís →Other Brazil cities in October
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São Luís weather in October. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/brazil/sao-luis/october
<a href="https://weathercompare.eu/weather/brazil/sao-luis/october">São Luís weather in October</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/brazil/sao-luis" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="São Luís weather in October"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/brazil/sao-luis/october">São Luís weather in October</a> – WeatherCompare</p>
São Luís in October: quick answers
Is October a good time to visit São Luís?
Yes. October is one of the best months for São Luís, with highs around 32°C and about 11 mm of rain.
How warm is São Luís in October?
Average highs are about 32°C (90°F) and average lows about 26°C (79°F), based on 10 years of daily data.
Does it rain a lot in São Luís in October?
São Luís typically gets around 11 mm of rain in October — very dry.
Figures are long-term averages for the area around São Luís (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.