Weather in Regina in May

A good month. May is a solid month to be in Regina. Highs average 18.4 °C, lows 5 °C, and rain falls on 10 days — nothing in the month is working against you.

May ranks 4 of 12 in Regina: past the worst of the year but short of September, which is the month to book if the dates are open.

Rain on 10 days, 1 of them heavy. Enough to need a plan B, not enough to need a plan around it. 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: 5 nights fall below freezing. Across the twenty years measured, the hottest May day reached 32.5 °C and the coldest night fell to -6.1 °C, and the wettest single day dropped 29 mm — roughly 57% of the month's rain in one day.

May is moderately variable: 17 mm in the driest year against 114 mm in the wettest, around an average of 51 mm. Roughly two Mays in three land near that average, and the third does something else entirely.

Wind is light at 13.5 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 58%.

How May sits in the year

The month is on the way up: 6.9 °C warmer than April, and June adds another 4.7 °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

15.4 hours of daylight, gaining 1.4 hours across the month. That is between Regina's extremes of 16.4 and 8 hours, so days are long enough not to constrain the plan.

An inland climate

Regina has no sea to moderate it, and it shows: 45 °C separates the hottest afternoon of the year from the coldest night. That is a genuinely continental range, and it means summer and winter here are barely the same place.

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.

May in Regina versus nearby

If Regina is one option among several, the nearby comparison is worth making. Saskatoon is close enough to be a coin toss — within a degree on temperature, 1 day less rain. Winnipeg is the weaker option in May — within a degree on temperature, 4 days more rain.

So: May works, with September the better month by 10 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Regina

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