Weather in Chihuahua in September

A good month. September works. It is not the peak, but nothing about it fights you. Highs average 29.3 °C, lows 16.9 °C, and rain falls on 11 days — nothing in the month is working against you.

September ranks 9 of 12 in Chihuahua: past the worst of the year but short of February, which is the month to book if the dates are open.

Rain on 11 days, 2 of them heavy. Enough to need a plan B, not enough to need a plan around it. Pack for 29.3 °C days and 16.9 °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: 14 days top 30 °C — hot spells arrive, but they break. Across the twenty years measured, the hottest September day reached 36 °C and the coldest night fell to 9.7 °C, and the wettest single day dropped 41 mm — roughly 59% of the month's rain in one day.

September is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest September on record still delivered 108 mm against 20 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 69 mm average is a reasonable planning figure, not a promise.

Wind is light at 7 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 62%.

How September sits in the year

Temperatures hold steady either side: 31.2 °C in August, 29.3 here, 27.8 in October. Nothing about the timing within the month matters much. Rain is the thing that moves: October brings 7 days less of it, so pushing the dates later buys drier weather.

Daylight in September

12.4 hours of daylight, losing 0.8 hours across the month. That is between Chihuahua's extremes of 14 and 10.3 hours, so days are long enough not to constrain the plan.

An inland climate

With no coast nearby, the year swings a fair way — 32 °C between the warmest afternoons and the coldest nights, wider than any coastal city at this latitude would manage. At 1437 m the air is thin enough to matter — sun that burns faster than the temperature suggests, and nights that cool off quickly.

How busy it gets

Quiet. Few other visitors, cheaper rooms, and a real chance some seasonal operators are shut.

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

September in Chihuahua versus nearby

If Chihuahua is one option among several, the nearby comparison is worth making. El Paso is close enough to be a coin toss — 2.5 °C warmer, 4 days less rain. Torreón is the weaker option in September — 2.5 °C warmer, 1 day less rain.

So: September is a compromise. February is 29 points better and is what Chihuahua is actually like at its best — worth moving the trip for if that is possible, and worth adjusting expectations for if it is not.

Every month in Chihuahua

See all twelve months in Chihuahua, or where else to go in September.