Early autumn · Weather & things to do
Jasper in September
Jasper cools off: highs slip to 60°F (15°C), from 69°F in August, with lows of 40°F (5°C) and about 2.3 in (58 mm) of rain.
It scores 76/100 for comfort, 4th of 12, which makes it a solid shoulder-season month.
- Avg high
- 60°F (15°C)
- Avg low
- 40°F (5°C)
- Rain
- 2.3 in (58 mm)
- Humidity
- 77%
- Cloud cover
- 71%
- Daylight
- ~12 h 23 min
- Comfort score
- 76/100 · Great
What September feels like
Expect mild afternoons around 60°F (15°C), good for long walks.
Lows average 40°F (5°C).
About 2.3 in (58 mm) of rain falls in a typical year's September.
Plan around September
September is shoulder season: good weather, a step below the best months (July & August).
- Comfort slips from 85/100 in August to 76/100.
- September sits inside the Jun – Sep window our Banff & Jasper Loop recommends.
What to pack for September
- A warm layer for eveningslows near 40°F
- Comfortable walking shoesmost picks involve some walking
What to do in Jasper in September
September is good outdoor weather here, so these picks lean toward the open air.
Maligne Lake Cruise
Boat cruise to Spirit Island on Jasper's largest lake.
Why now Our curated notes say it's best Jun–Sep.
Columbia Icefield Glacier Adventure
Ice Explorer ride onto the Athabasca Glacier from the Icefield Centre.
Why now Our curated notes say it's best May–Oct.
Columbia Icefield Skywalk
Glass-floored walkway 280 m above the Sunwapta Valley.
Athabasca Falls
Powerful falls squeezing through a quartzite gorge.
Why now September scores 76/100 for comfort, good conditions for being outside.
Jasper Brewing Co.
Brewpub on Connaught Drive, the first brewery in a Canadian national park.
Nearby in September
- Lake Louise in September~129 mi · highs 55°F, 3.1 in rain · 3°C (5°F) cooler by day, wetter
- Banff in September~158 mi · highs 59°F, 2.7 in rain · similar daytime temperatures, about as wet
- Whistler in September~283 mi · highs 63°F, 4.6 in rain · 2°C (3°F) warmer by day, wetter
NASA POWER 2001–2025 monthly averages on a ~50 km grid, temperatures adjusted from the grid cell's ~1,786 m to Jasper's ~1,060 m elevation (standard lapse rate). Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Jasper in September: quick answers
Is September a good time to visit Jasper?
It's a good shoulder-season choice, scoring 76/100 against a best of 85 in July & August. Expect highs of 60°F (15°C) and 2.3 in (58 mm) of rain. September is inside the Jun – Sep window our Banff & Jasper Loop recommends.
How cold is Jasper in September?
Average highs are 60°F (15°C) and average lows 40°F (5°C), making it the 4th-warmest month by daytime highs.
Does it rain a lot in Jasper in September?
Not much: about 2.3 in (58 mm) of rain falls across September on average, the 5th-wettest month of the year. The annual total is about 26.6 in (676 mm).
What should I pack for Jasper in September?
Bring a warm layer for evenings (lows near 40°F) and comfortable walking shoes (most picks involve some walking).
Routes in season in September
- Banff & Jasper Loop Jun – Sep
Planning Jasper in September?
Plan it together in TripsCircle: one itinerary, one shared packing list and costs split as you go.