San Luis Potosí Climate by Month
San Luis Potosí, Mexico
Hot days and cool nights all year, with a rainy season from May to September.
The climate in San Luis Potosí is one of hot days and cool nights all year, with a rainy season from May to September. May is the warmest month, with highs around 87°F (31°C); January is the coolest at 70°F (21°C), and nights dip to 42°F (6°C). It gets 16 in (397 mm) of rain a year, 76% of it from May to September. March and December are almost completely dry.
- Warmest month
- 87°F(31°C)
- Average high, May
- Coldest nights
- 42°F(6°C)
- Average low, January
- Rain per year
- 16 in(397 mm)
- Wettest: September
- Humidity
- 55%
- Sunniest: May
Best and worst months in San Luis Potosí
Best for weatherThe most comfortable weather comes in February and November, with highs around 75°F (24°C) and almost no rain.
Least pleasantMay and June are the least pleasant; May is the hottest, with highs of 87°F (31°C).
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 February.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
San Luis Potosí weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 70°F(21°C) | 42°F(6°C) | 0.5 in(13 mm) | 52% | 4.0 |
| FebFebruaryBest | 76°F(24°C) | 45°F(7°C) | 0.4 in(11 mm) | 50% | 4.9 |
| MarMarch | 80°F(27°C) | 49°F(9°C) | 0.3 in(8 mm) | 44% | 5.5 |
| AprApril | 85°F(30°C) | 53°F(12°C) | 0.5 in(13 mm) | 41% | 6.0 |
| MayMay | 87°F(31°C) | 56°F(13°C) | 1.3 in(33 mm) | 46% | 6.1 |
| JunJune | 84°F(29°C) | 58°F(14°C) | 2.6 in(67 mm) | 58% | 5.7 |
| JulJuly | 82°F(28°C) | 57°F(14°C) | 2.7 in(68 mm) | 61% | 5.7 |
| AugAugust | 82°F(28°C) | 57°F(14°C) | 2.4 in(62 mm) | 66% | 5.7 |
| SepSeptember | 79°F(26°C) | 56°F(13°C) | 2.8 in(72 mm) | 70% | 4.8 |
| OctOctober | 77°F(25°C) | 52°F(11°C) | 1.2 in(31 mm) | 62% | 4.7 |
| NovNovemberBest | 74°F(23°C) | 47°F(8°C) | 0.4 in(10 mm) | 56% | 4.1 |
| DecDecember | 71°F(22°C) | 43°F(6°C) | 0.4 in(9 mm) | 50% | 3.8 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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