Banff Weather in August
During August, Banff experiences moderate daytime temperatures of 18°C (64°F) and cooler nights around 4°C (39°F). As part of the summer season, expect quite a bit of rainfall. Around 80 mm (3.1 in) is typical.
Rainfall in Banff in August
Based on our climate data of the past 30 years, about 12 days of rain are anticipated, with 80 mm (3.1 in) on average. Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.
Temperature in Banff in August
Daytime temperatures in Banff reach 18°C (64°F) in August, dropping to 4°C (39°F) at night. The month of August belongs to the summer season. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. With overnight lows of 4°C (39°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.
Sunshine in Banff in August
The city usually sees around 215 hours of sunlight, indicating many sunny days — a great month for sightseeing.If you're a fan of comfortable temperatures and drier conditions, August is a great time to visit.
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 Banff's climate page.
Banff Temperature in August
Min Temperature
4°C (39°F)
Max Temperature
18°C (64°F)
Chance of Rain
38%
Precipitation
80 mm (3.1 in)
Rainy days
12 days
Humidity
40%
Sunshine
215 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Banff typically drop from around 23°C (73°F) at the start of August to approximately 20°C (68°F) by the end. Nights are cold, with lows typically ranging from 5°C (41°F) to 8°C (46°F).
Average temperatures in August
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 August
Historical weather for Banff in August
Browse day-by-day weather records for Banff spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Banff historical weather extremes in August
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Banff.
- Banff recorded its highest August temperature of 34°C (93°F) on August 10, 2018.
- On August 22, 1992, Banff saw its coldest August day with temperatures maxing out at 3°C (37°F).
- The lowest overnight temperature recorded in August was -5°C (23°F) (August 28, 2007).
Best Places in Canada in August
Find out more about the weather in Canada and which places have the best travel conditions in this month. See all of Canada in August →
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What to Wear in Banff in August
Comfortable temperatures call for an easy wardrobe in August. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Banff in August
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 Banff's climate page.
Temperature Rainfall Sunshine Humidity
See the full Banff climate overview or explore weather in Canada.
