Weather in Edmonton in August

Prime time. If you get to pick your dates, August is the one. Highs average 22.8 °C, lows 10.7 °C, and rain falls on 11 days — nothing in the month is working against you.

August is the highest-scoring month of the twelve. The nearest rival is September, and the month at the other end of the year is March.

Rain on 11 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

The averages here are honest — no hidden extremes worth planning around. Across the twenty years measured, the hottest August day reached 34.7 °C and the coldest night fell to 2.3 °C, and the wettest single day dropped 37 mm — roughly 67% of the month's rain in one day.

August is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest August on record still delivered 85 mm against 23 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 55 mm average is a reasonable planning figure, not a promise.

Wind is light at 8.3 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 68%.

How August sits in the year

Temperatures hold steady either side: 23.5 °C in July, 22.8 here, 17.6 in September. Nothing about the timing within the month matters much.

Daylight in August

14.9 hours of daylight, losing 1.9 hours across the month. That is between Edmonton's extremes of 17 and 7.5 hours, so days are long enough not to constrain the plan.

An inland climate

With no coast nearby, the year swings a fair way — 37.6 °C between the warmest afternoons and the coldest nights, wider than any coastal city at this latitude would manage.

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.

August in Edmonton versus nearby

If Edmonton is one option among several, the nearby comparison is worth making. Calgary is close enough to be a coin toss — within a degree on temperature, 1 day less rain. Banff is close enough to be a coin toss — 2.4 °C cooler, 2 days more rain.

So: August is the answer for Edmonton. If it is booked out or priced out, September is the next best thing at 3 points behind, and March is the month to keep off the shortlist.

Every month in Edmonton

See all twelve months in Edmonton, or where else to go in August.