Calgary in August
In August, Calgary averages 23°C (73°F) during the day and 11°C (51°F) at night, with frequent rain — about 15 days of the month see precipitation (62 mm total).
Peak seasonConditions are comfortable for sightseeing without being sweltering. Plan for unsettled weather and bring rain gear.
August offers comfortable temperatures in Calgary, with some rain to plan around.
How August compares to the rest of the year in Calgary
August is one of the warmest months in Calgary (2nd of 12) and moderately rainy compared to the rest of the year (5th of 12). Daytime temperature runs 13°C above the annual average (10°C). August runs 1°C cooler than July (24°C) and cools 6°C in September (17°C).
August sunrise & sunset in Calgary
Times shown for Calgary local time (America/Edmonton), calculated for the 15th of August. They shift by a few minutes day to day across the month.
Photography light in Calgary — August
Golden-hour and blue-hour windows for the 15th of August, in Calgary's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Calgary in August
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on August's tier (Peak season) and Calgary's popularity.
Crowds & pricing — August in Calgary
Calgary is in peak season during this month — expect bigger crowds at famous sights, higher hotel and flight prices, and longer queues. Restaurant reservations a few days out are advisable, and any boutique hotels you have your eye on should be booked weeks ahead. The trade-off: most attractions, restaurants, and seasonal services are fully open, the weather is at its most reliable, and the city feels at its most alive.
Why this tier: excellent tourism weather Northern Hemisphere summer holidays
Sun & mosquito risk — August in Calgary
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Calgary in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | -1°C / 30°F | -11°C / 12°F | 12 mm | 11 | — |
| February | -2°C / 28°F | -13°C / 8°F | 20 mm | 13 | — |
| March | 5°C / 40°F | -8°C / 18°F | 21 mm | 13 | — |
| April | 11°C / 51°F | -2°C / 28°F | 31 mm | 16 | — |
| May | 17°C / 62°F | 4°C / 39°F | 56 mm | 18 | — |
| June | 21°C / 69°F | 9°C / 48°F | 100 mm | 21 | — |
| July | 24°C / 74°F | 11°C / 52°F | 62 mm | 18 | — |
| August | 23°C / 73°F | 11°C / 51°F | 62 mm | 15 | — |
| September | 17°C / 63°F | 6°C / 42°F | 41 mm | 13 | — |
| October | 10°C / 51°F | 0°C / 31°F | 30 mm | 13 | — |
| November | 2°C / 36°F | -7°C / 19°F | 23 mm | 12 | — |
| December | -3°C / 27°F | -12°C / 10°F | 19 mm | 10 | — |
Other cities with similar August weather
🌍 See the full ranked list of climate twins for Calgary in August →
Frequently asked questions
How hot is Calgary in August?
In August, Calgary averages a high of 23°C (73°F) and a low of 11°C (51°F) — generally mild and pleasant.
Does it rain a lot in Calgary in August?
August is quite rainy in Calgary, with about 15 rainy days on average.
Is August a good time to visit Calgary?
August is mild and pleasant but on the rainy side. It suits travelers who are comfortable with mild and pleasant weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Calgary in August?
Pack light layers for warm days and cooler evenings, plus a compact umbrella or rain jacket. See the full August packing list for Calgary for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.