Seattle Weather in August

August in Seattle typically sees daytime highs of 25°C (77°F) and nighttime lows of 14°C (57°F). Expect some rainfall during the month. It falls within the summer season.

Rainfall in Seattle in August

The climate data from previous years indicates about 4 days of rain, averaging 23 mm (0.9 in) for the month. When rain does fall, showers tend to be light and brief. Most days will be dry.

Temperature in Seattle in August

The temperature in Seattle in August is excellent. Daytime highs reach 25°C (77°F), with nights dropping to 14°C (57°F). During August, the summer season is in full swing. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. Nights drop to around 14°C (57°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable. On average, it is the warmest month of the year.

Sunshine in Seattle in August

The days are predominantly sunny, with an estimated total of around 280 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.

Wind Speed in Seattle in August

In August, average wind speeds reach 4 m/s (8 knots), leading to light to moderate breezes. Conditions vary from day to day, with both calm and windier periods.

So this is a great month to visit if you prefer dry days with pleasant temperatures.