Weather in Hermosillo in April

A good month. April is a solid month to be in Hermosillo. Highs average 32.1 °C, lows 14.7 °C, and rain falls on 0 days — nothing in the month is working against you.

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

Rain is not a factor worth planning around this month. Pack for 32.1 °C days and 14.7 °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: 7 days clear 35 °C, so a serious heatwave is normal rather than notable; the day swings 17.4 °C from low to high, which means one bag has to cover both. Across the twenty years measured, the hottest April day reached 40.5 °C and the coldest night fell to 6.9 °C.

April is dependably dry, and that reliability is the point: across the twenty years measured, the wettest April on record still only managed 12 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 10 mm. Rain simply is not the variable that decides this trip — heat, crowds and cost are.

Wind is light at 9.3 km/h, so the temperature on the page is close to the temperature on your skin, and the air is dry at 31% humidity, which makes the heat far more bearable than the same figure somewhere humid — and dehydrates you faster than you expect.

How April sits in the year

The month is on the way up: 2.8 °C warmer than March, and May adds another 3.2 °C. Late in the month feels noticeably different from the start of it, which is worth knowing if the trip is short.

Daylight in April

12.8 hours of daylight, gaining 0.8 hours across the month. That is between Hermosillo'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 — 30.1 °C between the warmest afternoons and the coldest nights, wider than any coastal city at this latitude would manage. Within April itself the daily swing is 17.4 °C, so mornings and afternoons need different clothes.

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.

April in Hermosillo versus nearby

If Hermosillo is one option among several, the nearby comparison is worth making. Tucson is a better bet in April — 3.3 °C cooler, 1 day more rain. Chihuahua is a better bet in April — 2.3 °C cooler, 1 day more rain.

So: April is a compromise. December is 21 points better and is what Hermosillo 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 Hermosillo

See all twelve months in Hermosillo, or where else to go in April.