Weather in Phoenix in April

Prime time. April is about as good as Phoenix gets. Highs average 30.1 °C, lows 13.4 °C, and rain falls on 2 days — nothing in the month is working against you.

April ranks 6 of 12 in Phoenix: past the worst of the year but short of November, 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 30.1 °C days and 13.4 °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: 16 days top 30 °C — hot spells arrive, but they break; the day swings 16.7 °C from low to high, which means one bag has to cover both. Across the twenty years measured, the hottest April day reached 41 °C and the coldest night fell to 3.4 °C.

This is the volatile part. April rainfall has ranged from 0 mm to 35 mm across the twenty years measured — a 35 mm spread around an average of 8 mm. The average is real but almost no individual April looks like it, so treat the figure as the middle of a wide range rather than a forecast.

Wind is light at 7.9 km/h, so the temperature on the page is close to the temperature on your skin, and the air is dry at 29% 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: 4.1 °C warmer than March, and May adds another 5.2 °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

13 hours of daylight, gaining 1 hours across the month. That is between Phoenix's extremes of 14.4 and 10 hours, so days are long enough not to constrain the plan.

An inland climate

With no coast nearby, the year swings a fair way — 35.6 °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 16.7 °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 Phoenix versus nearby

If Phoenix is one option among several, the nearby comparison is worth making. Sedona is a better bet in April — 8 °C cooler, 1 day more rain. Tucson is close enough to be a coin toss — within a degree on temperature, 1 day less rain.

So: April works, with November the better month by 14 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Phoenix

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