San Luis Potosí is comfortable to be outside in almost any month: it rates Good or better for all year of the year. For sun, aim for late May; for walking, go from late September to March.
When to go five ratings · thirty-six ten-day sections · click a cell to read it
For sun, go in late May. It peaks in late May, at 58. That is a short window, about ten days a year. Avoid December to early February for this: it falls to 2, mostly because it is too cool. The clearest skies come in March, when the sky is typically 36% covered at midday (partly cloudy).
There is no bad time here for being outside: it rates Good or better in every part of the year. It is at its best in mid October, at 82.
For walking, go from late September to March. It peaks in mid January, at 81. Avoid late May for this: it falls to 20, mostly because it is too warm.
The year, measured
The average temperature in San Luis Potosí over the whole year is 18°C. May is the hottest month, with highs of about 28°C; January is the coldest, with lows of about 7°C. The rainy (wet) season in San Luis Potosí runs from May to September, peaking in June with a 50% chance of rain on a given day. The dry season is December to April; January is the driest month, at 23%. Winds in San Luis Potosí are highest in April, averaging 2.8 m/s (10 km/h), and lightest in November, at 1.7 m/s (6 km/h). The prevailing wind is from the SE. The clearest skies in San Luis Potosí come in February, when the sky is typically 36% covered; September is the cloudiest month, at 62%.
Month by month San Luis Potosí climate by month: average temperatures year round · click a month to read it
| Month | High | Low | Feels like | Chance of rain | Cloud | Wind | Being outside | Sun | Walking |
|---|---|---|---|---|---|---|---|---|---|
| January | 19°C | 7°C | 15°C | 23% | 46% | 2.1 m/s | 58 | 2 | 80 |
| February | 22°C | 8°C | 18°C | 26% | 36% | 2.4 m/s | 68 | 9 | 73 |
| March | 25°C | 11°C | 21°C | 34% | 38% | 2.7 m/s | 76 | 17 | 61 |
| April | 27°C | 13°C | 23°C | 36% | 45% | 2.8 m/s | 74 | 29 | 47 |
| May | 28°C | 15°C | 26°C | 42% | 44% | 2.6 m/s | 64 | 49 | 27 |
| June | 26°C | 16°C | 24°C | 50% | 58% | 2.8 m/s | 71 | 34 | 38 |
| July | 25°C | 15°C | 23°C | 46% | 61% | 2.8 m/s | 78 | 24 | 48 |
| August | 25°C | 15°C | 23°C | 46% | 58% | 2.8 m/s | 78 | 27 | 47 |
| September | 24°C | 15°C | 22°C | 49% | 62% | 2.2 m/s | 77 | 21 | 53 |
| October | 23°C | 12°C | 21°C | 32% | 51% | 2.0 m/s | 79 | 18 | 61 |
| November | 22°C | 10°C | 19°C | 37% | 43% | 1.7 m/s | 73 | 13 | 69 |
| December | 19°C | 7°C | 16°C | 34% | 44% | 1.7 m/s | 66 | 3 | 78 |
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short San Luis Potosí weather by season
Year round, San Luis Potosí has days of about 19°C at their warmest in January, its coolest month, and 28°C in May, its warmest; the coolest hours of the day run from 7°C to 16°C through the year, and the average temperature over the year is 18°C around the clock. Rain is most likely around June and least likely around January. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
San Luis Potosí weather in winterDecember to February
Winter in San Luis Potosí has typical daily highs of about 20°C and lows of about 8°C, with a 28% chance of rain on a given day.
San Luis Potosí weather in springMarch to May
Spring in San Luis Potosí has typical daily highs of about 27°C and lows of about 13°C, with a 37% chance of rain on a given day.
San Luis Potosí weather in summerJune to August
Summer in San Luis Potosí has typical daily highs of about 25°C and lows of about 15°C, with a 47% chance of rain on a given day.
San Luis Potosí weather in autumnSeptember to November
Autumn in San Luis Potosí has typical daily highs of about 23°C and lows of about 12°C, with a 39% chance of rain on a given day.
When is the rainy season in San Luis Potosí?
The rainy (wet) season in San Luis Potosí runs from May to September, peaking in June with a 50% chance of rain on a given day. The dry season is December to April; January is the driest month, at 23%.
What time of year is San Luis Potosí windiest?
Winds in San Luis Potosí are highest in April, averaging 2.8 m/s (10 km/h), and lightest in November, at 1.7 m/s (6 km/h). The prevailing wind is from the SE.
What is the average temperature in San Luis Potosí year round?
The average temperature in San Luis Potosí over the whole year is 18°C. May is the hottest month, with highs of about 28°C; January is the coldest, with lows of about 7°C.
Where to go instead in late May, the weakest time here for walking
How this is worked out
Every figure is a decade of weather-station observations blended into one typical year, in ten-day sections. The ratings, the chart and the feels-like column are read at midday local solar time. Being outside is the Easy outdoors rating, Sun is Sunbathing and Walking is Active outdoors, each out of 100: Good from 55, Ideal from 80. They describe what a time of year is usually like here, not a forecast. The dotted links open the map at that time of year; set its time of day to midday to see these numbers.