Determining the best time to travel to Seattle, Washington depends largely on what you intend to do. Like many Pacific Northwest cities, Seattle experiences seasonal climate change, so if you're planning on outdoor activities you'll want to consider the weather.
Consider the weather to make sure you pack appropriately. Seattle is known for persistent rainfall, with average precipitation levels ranging from about 3.5 inches to 6 inches per month between October and December. The warmest, driest months are July and August, when monthly rain levels hover around 1 inch and average daytime temperatures are 75 degrees.
Seattle features several professional and collegiate athletic teams, and if you're hoping to catch a game, late summer is the best time to tour the city. Major League Baseball's Seattle Mariners, the National Football League's Seattle Seahawks and the University of Washington Huskies football and volleyball teams all have events scheduled during the month of September. In the spring, you'll find games for the Mariners as well as Huskies baseball and softball.
Seattle's signature attractions -- Pike Place Market, the Space Needle and the Experience Music Project Science Fiction Museum -- are open year-round. While the summer months are the driest and warmest, they're also the busiest for Seattle tourism. To avoid the crowds, visit attractions during weekday mornings.
