Lake Louise Weather in September
Lake Louise in September sees low temperatures, with highs around 11°C (52°F) and overnight lows of -1°C (30°F). Snow/rainfall is fairly high at around 68 mm (2.7 in) on average, so pack waterproofs just in case.
Rainfall in Lake Louise in September
Based on our climate data of the past 30 years, about 13 days of snow/rain are anticipated, with 68 mm (2.7 in) on average. A fairly balanced picture this month, some wet days but nothing too extreme in terms of intensity.
Temperature in Lake Louise in September
Temperatures in Lake Louise in September top out at 11°C (52°F) and drop to -1°C (30°F) overnight. Cold conditions persist throughout the day, so warm clothing is important from the moment you head outside. Nights drop below freezing to -1°C (30°F). An extra blanket is worth packing if you're unsure about the heating where you're staying.
Sunshine in Lake Louise in September
You can expect a moderate amount of sunlight, with approximately 172 hours. This means a pleasant mix of sun and overcast.If you prefer dry days with pleasant temperatures, July and August typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Canada, check out our Lake Louise's climate page.
Lake Louise Temperature in September
Min Temperature
-1°C (30°F)
Max Temperature
11°C (52°F)
Chance of Rain
42%
Precipitation
68 mm (2.7 in)
Rainy days
13 days
Humidity
43% *
Sunshine
172 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Lake Louise typically drop from around 18°C (64°F) at the start of September to approximately 13°C (55°F) by the end. Nights are cold, with lows typically ranging from 1°C (34°F) to 5°C (41°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Lake Louise in September
Browse day-by-day weather records for Lake Louise spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Lake Louise historical weather extremes in September
Based on 49 years of weather observations in Lake Louise between 1976 and 2025, these are the recorded extremes.
- Lake Louise recorded its highest September temperature of 31°C (88°F) on September 3, 2022.
- Lake Louise experienced its chilliest September day on September 29, 2019, reaching only -1°C (30°F).
- The coldest night in September in Lake Louise was on September 28, 1985, with a minimum of -10°C (14°F).
Best Places in Canada in September
Find out more about the weather in Canada and which places have the best travel conditions in this month. See all of Canada in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Lake Louise in September
The weather can be unpredictable in September, so pack clothes you can easily mix and match. You could bring jeans, other long pants, and a few t-shirts. A light jacket or light sweater will be pleasant for the cooler moments. Rain is likely on several days, so bring a good rain jacket. Bring sunglasses since you'll have some sunny periods throughout the monthWhat To Do in Lake Louise in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Canada, check out our Lake Louise's climate page.
Temperature Rainfall Sunshine Humidity
See the full Lake Louise climate overview or explore weather in Canada.
