Weather in San Luis Potosí in October

Prime time. October is about as good as San Luis Potosí gets. Highs average 25 °C, lows 11.6 °C, and rain falls on 6 days — nothing in the month is working against you.

October ranks 6 of 12 in San Luis Potosí: past the worst of the year but short of December, which is the month to book if the dates are open.

Rain falls on only 6 days, so an itinerary with no wet-weather fallback is a reasonable risk. Nothing specialised needed — this is the month you pack for the trip rather than for the weather.

What the averages hide

Averages flatten a month, and this one hides a few things: it never really gets hot: not one day in an average October reaches 30 °C. Across the twenty years measured, the hottest October day reached 30.4 °C and the coldest night fell to 1.8 °C.

October is moderately variable: 4 mm in the driest year against 88 mm in the wettest, around an average of 33 mm. Roughly two Octobers in three land near that average, and the third does something else entirely.

Wind is light at 10.1 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 71%.

How October sits in the year

Temperatures hold steady either side: 25.6 °C in September, 25 here, 23 in November. Nothing about the timing within the month matters much. Rain has already shifted: 8 days fewer than September had.

Daylight in October

11.7 hours of daylight, losing 0.6 hours across the month. That is between San Luis Potosí's extremes of 13.5 and 10.8 hours, so days are long enough not to constrain the plan.

An inland climate

Despite being inland, the year stays fairly even: 24.5 °C between the year's warmest afternoons and coldest nights. At 1886 m, altitude is doing as much work here as latitude: thinner air means fierce sun by day and heat that leaves the moment it sets.

How busy it gets

Busy. Popular without being frantic; book the things you care about, improvise the rest.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

October in San Luis Potosí versus nearby

If San Luis Potosí is one option among several, the nearby comparison is worth making. Santiago de Querétaro is close enough to be a coin toss — within a degree on temperature, 3 days more rain. Morelia is the weaker option in October — within a degree on temperature, 7 days more rain.

So: October works, with December the better month by 9 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in San Luis Potosí

See all twelve months in San Luis Potosí, or where else to go in October.