SeasonMapJasper (Jasper National Park) weather in May
Canada
May in Jasper: cool, a little rain, with clean air — an excellent time to visit.
#4 of 12 months in Jasper · #323 of 1383 destinations to visit in May · comfort 87/100 (tier A)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Jasper in May
Other months in Jasper
Jasper's forum calls September genuinely changeable — regulars describe days warm enough for shorts followed by others that bring an early snow flurry, so layers and a warm fleece are standard advice. Nights routinely dip into the single digits even when the days stay mild, and it's still one of the park's busier months before the crowds thin out.
Add your own note from Jasper's card on the map.
Jasper climate normals — May
| Daytime high | 17°C / 62°F | 🙂 cool |
|---|---|---|
| Nighttime low | 1°C / 33°F | |
| Feels like (high) | 15°C / 59°F | |
| Rainfall | 39 mm / 1.5 in | 🌦 some rain |
| Rainy days | 7 days | |
| Humidity | 72% | 💧 humid |
| Dew point | 0°C / 32°F | |
| Sunshine | 12.3 h/day | |
| Daylight | 15.9 h | |
| Wind | 8 km/h / 5 mph | |
| Snowfall | 32.3 cm / 12.7 in | |
| Air quality (US AQI) | 49 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Jasper in May
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Shoulder seasonan ordinary month(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Jasper's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherJasper's best weather comes in June, August and September — separate windows, not one continuous season.
Best weatherFair weatherToughest weather
What's on in Jasper in May
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Closure
Icefields Parkway in winter
1 Nov – 15 Jun · usuallyRiskThe road to Lake Louise stays open but loses its services: no fuel for 230 km, ploughing only in daylight hours from October to May, and avalanche-control closures that can shut it with no notice. Source ↗
- Season
Marmot Basin ski season
15 Nov – 1 May · usuallyMarmot usually opens in the third week of November and runs into April or early May. It is the quietest big hill in the Rockies, largely because getting to Jasper in winter is a four-hour drive nobody does casually. Source ↗
- Season
Snow season
Ski seasonAbout 32 cm of snow falls in the month.
from the climate normals
Nearby, and something's on
Within 300 km of Jasper — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Jasper?
Jasper in May — FAQ
- Is May a good time to visit Jasper?
- May in Jasper: cool, a little rain, with clean air — an excellent time to visit. It ranks #4 of 12 months for Jasper on SeasonMap's comfort score (87/100).
- What is the weather like in Jasper in May?
- In May, Jasper averages a daily high of 16.7°C and a low of 0.8°C, with about 39.2 mm of rain over roughly 7.1 rainy days.
- What is the air quality in Jasper in May?
- Jasper has a mean US Air Quality Index of about 49 in May.
- Does it snow in Jasper in May?
- Jasper sees roughly 32.3 cm of snowfall in May.
Other months in Jasper
Compare Jasper in May
Warmer or cooler than Jasper in May
Within 300 km: Revelstoke's Meadows in the Sky Parkway around 16 May – 20 Oct, and Lake Louise's Ski season around 5 Nov – 5 May.