Banff

Banff National Park Weather in September

Average temperatures, rainfall, sunshine and the best places to visit in Banff National Park, Canada in September.

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Banff Lake Louise Castle Junction

Considering a trip to Banff National Park, Canada this September and wondering about the expected weather conditions? Find all the crucial information you need right here, addressing your question:

What to Expect in Banff National Park in September

Banff National Park, Canada is a region in Canada. September in Banff National Park generally has mild temperatures, with moderate precipitation.

Temperatures

You can expect mild maximum daytime temperatures of around 12°C (54°F) and nighttime temperatures around -1°C (30°F) in Banff.

For a closer look at conditions across Banff National Park, Canada, refer to the map below.

Precipitation

September is a moderate rainy month with an average snow/rainfall of around 69 mm (2.7 in) in Banff.

Average sunshine

Most areas see decent amounts of sunshine this month. Banff gets around 172 hours of sunlight, providing a pleasant balance of sun and clouds. If you'd prefer more guaranteed sunshine, our weather planner can show you sunnier spots around the world.

Explore Banff National Park by month

Pick a month to see the average temperature, rainfall and sunshine in Banff National Park — and find the best time to visit. (based on Banff)

January-9°C (16°F) February-7°C (19°F) March-2°C (28°F) April3°C (37°F) May8°C (46°F) June13°C (55°F) This monthJuly18°C (64°F) August18°C (64°F) September12°C (54°F) October4°C (39°F) November-5°C (23°F) December-10°C (14°F)
Best Time to Visit Banff National Park →

Best Places to Visit in Banff National Park in September

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Banff National Park.

Conditions Temperatures Precipitation
perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Banff National Park

What is the weather like in September for some of the most popular destinations in Banff National Park, Canada?

Temperature range in Banff National Park (September)

Precipitation variation in Banff National Park (September)

Banff

In September Banff generally has moderate temperatures with maximum daytime temperatures around 12°C (54°F), minimum nighttime temperatures around -1°C (30°F) and moderate monthly snow/rainfall. So on average the conditions are unpleasant that month.

« August
September
October »
August
September
October
Max temperature
18°C (64°F)
12°C (54°F)
4°C (39°F)
Min temperature
4°C (39°F)
-1°C (30°F)
-8°C (18°F)
Monthly sun hours
215 hours
172 hours
128 hours
Monthly snow/rainfall
80 mm (3.1 in)
69 mm (2.7 in)
50 mm (2 in)
Monthly rainy days
12 days
10 days
8 days
Weather conditions
pleasant
unpleasant
poor
Climate in Banff →

Lake Louise

In September Lake Louise generally has low temperatures with maximum daytime temperatures around 11°C (52°F), minimum nighttime temperatures around -1°C (30°F) and moderate monthly snow/rainfall. So on average the conditions are unpleasant that month.

« August
September
October »
August
September
October
Max temperature
16°C (61°F)
11°C (52°F)
2°C (36°F)
Min temperature
3°C (37°F)
-1°C (30°F)
-9°C (16°F)
Monthly sun hours
215 hours
172 hours
128 hours
Monthly snow/rainfall
72 mm (2.8 in)
68 mm (2.7 in)
61 mm (2.4 in)
Monthly rainy days
15 days
13 days
11 days
Weather conditions
tolerable
unpleasant
poor
Climate in Lake Louise →

Castle Junction

In September Castle Junction generally has low temperatures with maximum daytime temperatures around 12°C (54°F), minimum nighttime temperatures around -1°C (30°F) and moderate monthly snow/rainfall. So on average the conditions are unpleasant that month.

« August
September
October »
August
September
October
Max temperature
17°C (63°F)
12°C (54°F)
3°C (37°F)
Min temperature
3°C (37°F)
-1°C (30°F)
-9°C (16°F)
Monthly sun hours
215 hours
172 hours
128 hours
Monthly snow/rainfall
76 mm (3 in)
68 mm (2.7 in)
55 mm (2.2 in)
Monthly rainy days
13 days
11 days
10 days
Weather conditions
tolerable
unpleasant
poor
Climate in Castle Junction →

Is your destination not in the list? Have a look at all destinations in Banff National Park, in Canada.

Popular cities in September

Day & night temperatures, rainfall and average weather in Banff National Park in September.

City Weather Day temp Night temp Rainfall
Banff 12°C (54°F) -1°C (30°F) 69 mm (2.7 in)
Lake Louise 11°C (52°F) -1°C (30°F) 68 mm (2.7 in)
Castle Junction 12°C (54°F) -1°C (30°F) 68 mm (2.7 in)

Banff National Park weather in September: frequently asked questions

What is the weather like in Banff National Park, Canada in September?

September in Banff National Park, Canada brings unpleasant weather. In Banff, daytime temperatures are typically around 12°C (54°F) and nighttime lows hover near -1°C (30°F).

What is the average temperature in Banff National Park, Canada in September?

In Banff, the average daytime high in September is 12°C (54°F), while nighttime temperatures drop to around -1°C (30°F).

Does Banff National Park, Canada get a lot of snow/rain in September?

Rain is generally moderate to light in Banff National Park, Canada during September, with Banff averaging close to 69 mm (2.7 in).

Is September a Good Time to Visit Banff National Park, Canada?

In our view, September might not be the best time to travel to Banff National Park, Canada with often unpleasant weather in Banff.

On average, the best time to visit Banff National Park, Canada is in July and August with generally pleasant weather in Banff. On the other hand, the weather in January, February, March, April, May, June, October, November and December tend to be poor.

Interested in more climate information?

We have much more information about the climate in Banff National Park.

Weather and climate has detailed information for every country in the world. Are you going to Canada? Get detailed historical weather averages for many cities in Canada.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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