Montreal vs Boston

Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Boston edges ahead as the better destination in August. Boston offers 11 hours of daily sunshine with only 9 rain days, while Montreal sees 11 sunshine hours and 12 rain days.

Montreal sits in the comfortable travel range at 25°C. Boston is also comfortable at 27°C.

For travelers who prioritize dry weather, Boston is the stronger choice in August.

Montreal reaches an average high of 25°C (77°F) and drops to 17°C (63°F) at night during August. The daily temperature range is 8°C, meaning moderate variation throughout the day.

Boston averages 27°C (81°F) for the high and 18°C (64°F) for the low, with a daily range of 9°C. The 2°C difference is noticeable but not dramatic.

Both cities are in the Northern Hemisphere, so they share the same seasonal pattern in August.

Montreal receives approximately 100 mm of rainfall across 12 rain days during August. You can expect rain roughly every other day.

Boston sees 86 mm over 9 rain days. That makes Boston the drier option by 3 rain days and 14 mm of total precipitation.

Both cities share similar humidity levels at 65%.