Seattle vs Vancouver

Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Seattle edges ahead as the better destination in August. Seattle offers 12 hours of daily sunshine with only 5 rain days, while Vancouver sees 12 sunshine hours and 7 rain days.

Seattle sits in the comfortable travel range at 25°C. Vancouver is also comfortable at 23°C.

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

Seattle reaches an average high of 25°C (77°F) and drops to 14°C (57°F) at night during August. The daily temperature range is 11°C, meaning moderate variation throughout the day.

Vancouver averages 23°C (73°F) for the high and 15°C (59°F) for the low, with a daily range of 8°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.

Seattle receives approximately 34 mm of rainfall across 5 rain days during August. Rain is occasional, so a light rain jacket should suffice.

Vancouver sees 72 mm over 7 rain days. That makes Seattle the drier option by 2 rain days and 38 mm of total precipitation.

Both cities share similar humidity levels at 65%.