São Luís Climate by Month
São Luís, Maranhão, Brazil
Hot all year, with a rainy season from January to May.
Hot all year, with a rainy season from January to May: that's São Luís's climate in short. Afternoon highs range from 87°F (31°C) in March to 91°F (33°C) in October, and July nights average 72°F (22°C). Of the 77 in (1948 mm) of rain in a typical year, 79% falls from January to May.
- Warmest month
- 91°F(33°C)
- Average high, October
- Coldest nights
- 72°F(22°C)
- Average low, July
- Rain per year
- 77 in(1948 mm)
- Wettest: April
- Humidity
- 77%
- Sunniest: September
Best and worst months in São Luís
Best for weatherSeptember to November are the best time for weather in São Luís: highs near 91°F (33°C) and almost no rain.
Least pleasantApril is the least pleasant month: it's the wettest, with 17 in (428 mm) of rain.
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in November.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
São Luís weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 89°F(31°C) | 74°F(23°C) | 7.1 in(181 mm) | 77% | 4.5 |
| FebFebruary | 88°F(31°C) | 73°F(23°C) | 11 in(291 mm) | 82% | 4.1 |
| MarMarch | 87°F(31°C) | 74°F(23°C) | 15 in(371 mm) | 82% | 4.0 |
| AprApril | 88°F(31°C) | 73°F(23°C) | 17 in(428 mm) | 82% | 3.9 |
| MayMay | 88°F(31°C) | 74°F(23°C) | 11 in(271 mm) | 80% | 4.3 |
| JunJune | 89°F(31°C) | 73°F(23°C) | 6.5 in(166 mm) | 78% | 4.5 |
| JulJuly | 89°F(32°C) | 72°F(22°C) | 4.7 in(120 mm) | 76% | 4.8 |
| AugAugust | 90°F(32°C) | 72°F(22°C) | 1.1 in(28 mm) | 74% | 5.2 |
| SepSeptemberBest | 91°F(33°C) | 73°F(23°C) | 0.7 in(17 mm) | 70% | 5.5 |
| OctOctoberBest | 91°F(33°C) | 73°F(23°C) | 0.4 in(11 mm) | 72% | 5.4 |
| NovNovemberBest | 90°F(32°C) | 73°F(23°C) | 0.5 in(12 mm) | 73% | 5.1 |
| DecDecember | 90°F(32°C) | 74°F(23°C) | 2.0 in(52 mm) | 72% | 5.0 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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