Weather in San Luis Potosí in April

Prime time. April is about as good as San Luis Potosí gets. Highs average 29.8 °C, lows 12 °C, and rain falls on 2 days — nothing in the month is working against you.

April ranks 7 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 2 days, so an itinerary with no wet-weather fallback is a reasonable risk. Pack for 29.8 °C days and 12 °C nights; the spread matters more here than any single number.

What the averages hide

Averages flatten a month, and this one hides a few things: 15 days top 30 °C — hot spells arrive, but they break; the day swings 17.8 °C from low to high, which means one bag has to cover both. Across the twenty years measured, the hottest April day reached 35.2 °C and the coldest night fell to 4.6 °C.

April is dependably dry, and that reliability is the point: across the twenty years measured, the wettest April on record still only managed 18 mm, and the driest managed 0 mm. There is no meaningful variability to plan around, which makes this one of the few months anywhere that you can build a fixed outdoor itinerary against without a fallback. The wettest single day in twenty years of Aprils brought 12 mm. Rain simply is not the variable that decides this trip — heat, crowds and cost are.

Wind is light at 11.3 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 41%.

How April sits in the year

Temperatures hold steady either side: 26.6 °C in March, 29.8 here, 30.6 in May. Nothing about the timing within the month matters much. Rain is the thing that moves: May brings 5 days more of it, so the earlier half of a flexible trip is the safer half.

Daylight in April

12.6 hours of daylight, gaining 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. Within April itself the daily swing is 17.8 °C, so mornings and afternoons need different clothes.

How busy it gets

Shoulder. The value months — prices ease off and you get the place closer to itself. April is the value pick for San Luis Potosí: it scores within 14 points of December without carrying December's prices.

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

April 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 the weaker option in April — within a degree on temperature, 1 day more rain. Morelia is close enough to be a coin toss — within a degree on temperature, 1 day less rain.

So: April works, with December the better month by 14 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 April.