Weather in Edmonton in December

The month to avoid. December is the month most people should skip in Edmonton. Highs sit at -5.8 °C and the day is short; this is an indoors-with-excursions month, not an outdoors-all-day one.

December ranks 11 of 12 — near the bottom of Edmonton's year. August is the month that works, and the swing between the two is 56 points, which is a different holiday rather than a slightly better one.

Rain falls on only 6 days, so an itinerary with no wet-weather fallback is a reasonable risk. Layers, and a genuinely waterproof outer — at -5.8 °C the difference between a good day and a miserable one is entirely down to what you are wearing.

What the averages hide

Averages flatten a month, and this one hides a few things: 31 nights drop below freezing, so anything left outside stays frozen. Across the twenty years measured, the hottest December day reached 7.4 °C and the coldest night fell to -34.9 °C.

December is moderately variable: 6 mm in the driest year against 43 mm in the wettest, around an average of 19 mm. Roughly two Decembers in three land near that average, and the third does something else entirely.

Wind is light at 10.6 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 90%, which at -5.8 °C means damp rather than muggy — the kind of cold that gets into a coat and stays there.

How December sits in the year

Temperatures hold steady either side: 0.1 °C in November, -5.8 here, -5.9 in January. Nothing about the timing within the month matters much.

Daylight in December

December sits at the dark end of Edmonton's year — 7.5 hours of daylight against 17 at midsummer, losing 0.4 hours across the month. Sightseeing days are genuinely shorter, and an itinerary built for summer will not fit.

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

Quiet. Few other visitors, cheaper rooms, and a real chance some seasonal operators are shut.

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

December 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 — 4.1 °C warmer, 1 day less rain. Banff is the weaker option in December — within a degree on temperature, 8 days more rain.

So: December is a compromise. August is 53 points better and is what Edmonton 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 Edmonton

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