Weather in Moab in May

Prime time. May is about as good as Moab gets. Highs average 26.4 °C, lows 10.9 °C, and rain falls on 6 days — nothing in the month is working against you.

May ranks 3 of 12 in Moab. Only April scores clearly higher, and the difference is small enough to be settled by price rather than weather.

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: 9 days top 30 °C — hot spells arrive, but they break; the day swings 15.5 °C from low to high, which means one bag has to cover both. Across the twenty years measured, the hottest May day reached 40.6 °C and the coldest night fell to -1.7 °C.

May is moderately variable: 1 mm in the driest year against 56 mm in the wettest, around an average of 23 mm. Roughly two Mays in three land near that average, and the third does something else entirely.

Wind is light at 9.5 km/h, so the temperature on the page is close to the temperature on your skin, and the air is dry at 37% humidity, which makes the heat far more bearable than the same figure somewhere humid — and dehydrates you faster than you expect.

How May sits in the year

The month is on the way up: 5.9 °C warmer than April, and June adds another 7.7 °C. Late in the month feels noticeably different from the start of it, which is worth knowing if the trip is short.

Daylight in May

14.2 hours of daylight, gaining 0.9 hours across the month. That is between Moab's extremes of 14.8 and 9.5 hours, so days are long enough not to constrain the plan.

An inland climate

With no coast nearby, the year swings a fair way — 39.1 °C between the warmest afternoons and the coldest nights, wider than any coastal city at this latitude would manage. At 1227 m the air is thin enough to matter — sun that burns faster than the temperature suggests, and nights that cool off quickly. Within May itself the daily swing is 15.5 °C, so mornings and afternoons need different clothes.

How busy it gets

Peak season. Expect the highest prices of the year and to be booking well ahead.

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

May in Moab versus nearby

If Moab is one option among several, the nearby comparison is worth making. Aspen is the weaker option in May — 10.8 °C cooler, 3 days more rain. Park City is the weaker option in May — 10.3 °C cooler, 4 days more rain.

So: May is effectively as good as it gets here — 2 points behind April, which is inside the margin where the weather stops being the deciding factor and price starts being it.

Every month in Moab

See all twelve months in Moab, or where else to go in May.