Last updated: June 18, 2025
In August, the average temperature in Montreal-Ouest, Canada is a pleasant 21°C (71°F). During this time, temperatures can dip as low as 10°C (50°F) and soar to a maximum of 32°C (89°F). Expect to encounter about 98 mm (3.9 in) of precipitation spread over 13 days, with a notable average humidity of 75%. It's a month where the weather can be quite dynamic, so be prepared for a mix of warmth and occasional showers!
In August, in Montreal-Ouest, the average temperature is 21°C (71°F), with maximums reaching 32°C (89°F) and minimums dipping as low as 10°C (50°F). This makes Montreal-Ouest a great destination for travelers looking to enjoy mild weather and pleasant conditions during this time of year.
In Montreal-Ouest in August, the precipitation amount is 98 mm (3.9 in) over a span of 13 days.
In Montreal-Ouest in August, humidity is 75%. With an average temperature of 21°C (71°F), this humidity feels like a warm blanket wrapping around you, making travel slightly uncomfortable but offering a lush, vibrant atmosphere that invites exploration at a leisurely pace.
In Montreal-Ouest in August, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Montreal-Ouest.
UV Risk Categories
Weather in Montreal-Ouest varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Montreal-Ouest, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -8°C (18°F) | 84 mm (3.3 inches) | 93% | low |
| February Weather | -7°C (20°F) | 85 mm (3.3 inches) | 92% | moderate |
| March Weather | -2°C (29°F) | 85 mm (3.3 inches) | 86% | moderate |
| April Weather | 6°C (42°F) | 120 mm (4.7 inches) | 85% | high |
| May Weather | 13°C (56°F) | 96 mm (3.8 inches) | 80% | very high |
| June Weather | 19°C (67°F) | 97 mm (3.8 inches) | 74% | very high |
| July Weather | 22°C (73°F) | 89 mm (3.5 inches) | 76% | very high |
| August Weather | 21°C (71°F) | 98 mm (3.9 inches) | 75% | very high |
| September Weather | 17°C (62°F) | 69 mm (2.7 inches) | 78% | high |
| October Weather | 10°C (51°F) | 132 mm (5.2 inches) | 86% | moderate |
| November Weather | 2°C (36°F) | 115 mm (4.5 inches) | 88% | moderate |
| December Weather | -4°C (24°F) | 89 mm (3.5 inches) | 89% | low |