June to September. Month by month below, with the weather, what's on and what it costs to fly there from your city.
Summer, June to September, is called best for warm, dry weather; late spring and early fall are the pick for fewer crowds.
6 of the 9 travel guides we read name these months.
Average high and low in Seattle, and days with rain
JanuaryChecking fares…Part of the wet season, November to January, with up to 18 rainy days a month.Prime snow sports conditions in the mountains run January to March.Ice rink at the Space Needle is open November to January.
FebruaryChecking fares…Seattle Museum Month in February gives pass holders half-price museum entry.Heart of the ski season in the nearby mountains arrives in early February.
MarchChecking fares…Spring arrives and cherry blossoms start from mid-March; average temperature about 53F.Gray whales usually stop in Puget Sound in March and April.Moisture Festival
AprilChecking fares…Seattle Cherry Blossom & Japanese Cultural Festival and Restaurant Week.Shoulder season when the city comes alive with cherry blossoms and tulips.Skagit Valley Tulip Festival
MayChecking fares…May or early June beats the summer crowds, with daylight past 9 pm.Seattle International Film Festival usually starts in May and runs into June.
Best timeJuneChecking fares…Summer crowds arrive with cruise ships around mid-June.Fremont Solstice Parade marks the longest day each June.Longest days of the year, and less busy than July.Fremont Fair
Best timeJulyChecking fares…July and August are the warmest and driest months.Bite of Seattle and Capitol Hill Block Party take place in July.Crowds arrive in July and August, with highs near 77F.Vancouver Pride Parade
Best timeAugustChecking fares…Nearly every day is warm, rarely too hot, and usually dry and clear.Among the warmest and driest months, with only about five rainy days.PAX West
Best timeSeptemberChecking fares…One writer calls it the best month: last summer warmth, fewer crowds, little rain.Bumbershoot happens on Labor Day weekend.Crowds have left and the weather is still pleasant, around 72F.
OctoberChecking fares…Mid-September to late October is best for fall hiking.Best month for fall foliage.Borealis Festival of Light and Refract Glass events are in October.Earshot Jazz Festival
NovemberChecking fares…November and December are the rainiest months.Día de los Muertos at the Seattle Center in November.Seattle Christmas Market
DecemberChecking fares…Winterfest runs from late November into December.Winterfest, the Christmas Ship Festival and New Year's at the Needle.Among the rainiest months.Weather: Seattle averages from NOAA (1991 to 2020 averages), as listed in its climate table on Wikipedia.
Live fares from your airport. Watch them and we alert you when they drop.
Festivals and seasons through the year
Cancún
The Grand Canyon
Disneyland
Miami
Myrtle Beach
Prague
Bali
Maui
Montreal
Venice
Aruba
New Orleans
Nashville
Disney World
New York
Rome
San Diego
Phuket
Boston
Dubai
Seoul
Florida
Lisbon
Los Angeles
Chicago
Paris
Las Vegas
San Francisco
Edinburgh
Napa
Sydney
Hawaii
Scotland
Punta Cana
Savannah
Washington, DC
Mexico City
Zion National Park
Turks and Caicos
Puerto Vallarta
Honolulu
Banff
Yosemite
Tulum
The Bahamas
Sedona
Santorini
Buenos Aires
London
Charleston
Rio de Janeiro
Palm Springs
Yellowstone
Amsterdam
Toronto
Key West
Orlando
Europe
Austin
Machu Picchu
Cabo San Lucas
Niagara Falls
Colorado
Oregon
Arizona
Acadia National Park
Galapagos
Lake Tahoe
Montana
Kauai
Okinawa
US Virgin Islands
Amalfi Coast
Santa Fe
Destin
Curacao
Utah
Joshua Tree
Patagonia
St. Thomas
Florida Keys
Smoky Mountains
Copenhagen
Death Valley
Mallorca
Madeira
Cape Town
Ibiza
Zanzibar
Lake Como
Madrid
New Mexico
Tennessee
Vermont
Wyoming
Bryce Canyon
Oahu
St. Martin
Hilton Head
Dolomites
Cape Cod
San Antonio
Rocky Mountain National Park
Dublin
Catalina Island
Athens
Asheville
Texas
South America
Shenandoah National Park
Phoenix
North Carolina
Medellín
Cairo
Budapest
Arches National Park
St. John
South Carolina
Reykjavik
Mykonos
Milan
Houston
Hanoi
Canary Islands
Big Island of Hawaii
Atlanta
The Caribbean
St. Barts
South Dakota
Rhode Island
New England
Nassau
Lima
Kyoto
Koh Samui
Colorado Springs
Chiang Mai
Stockholm
Porto
Montego Bay
Michigan
Melbourne
Louisiana
Kuala Lumpur
Kruger National Park
Jeju
Florence
Dallas
Zurich
Tampa
St. Kitts
Osaka
Munich
Moorea
Kailua-Kona
Everglades
Door County
Cusco
Calgary
Boracay
Bonaire
Swiss Alps
St. Croix
Seville
San Juan Islands
New Hampshire
Minnesota
Mazatlán
Manila
Kentucky
Isla Mujeres
Guam
French Riviera
Fort Lauderdale
Cinque Terre
Asia
Algarve
Virginia
Tenerife
Sapporo
Nairobi
Mumbai
The Hamptons
Grand Teton National Park
Finger Lakes
Charlotte
Bogotá
Auckland
Maine
Bora Bora
Olympic National Park
Redwood National Park
Sequoia National Park
Big Bend National Park
Mackinac Island
Sint Maarten
Nantucket
Outer Banks
California
Big Sur
Crater Lake
Scottsdale
Nice
Mount Rainier
Cozumel
Badlands National Park
Salt Lake City
Denali
Philadelphia
Tucson
Provence
Guadalajara
Albuquerque
Upper Peninsula
Sonoma
Memphis
Idaho
Da Nang
Cotswolds
Arkansas
St. Louis
Capri
Glacier National Park
Barcelona
Vancouver
Denver
Istanbul
Riviera Maya
Carmel-by-the-Sea
Santiago, Chile
Naples, Italy
Central America
Minneapolis
Sarasota
Halifax, Nova Scotia
Pittsburgh
Helsinki
Pensacola
Johannesburg
Brisbane
Málaga
Phu Quoc
Perth
Dubrovnik
Corpus Christi
Massachusetts
Oklahoma
Torres del Paine
Czech Republic
Ho Chi Minh City
Anchorage
Boise
Louisville
Juneau
Quito
West Virginia
Wisconsin
Canyonlands National Park
Baja California
Blue Ridge Mountains
Fort Myers
Detroit
Kansas City, Missouri
Kathmandu
Reno
Cebu
Brussels
Guangzhou
Chattanooga
Antalya
Daytona Beach
Cairns
Hilo
Alabama
Connecticut
New Jersey
Pennsylvania
Capitol Reef National Park