Washington — Water Temperature Today and Throughout the Year
Discover water temperatures in Washington (United States), with real-time data and annual trends. Find all locations in the region and check the water temperature in them. We find every place where you can swim and show you the water temperature there today and throughout the year.
Sea Water Temperature Along the Coast
Chart of Average Temperature Changes Over the Last 60 Days
Places with the Warmest Sea Water Today
The Most Popular Seaside Places
- Seattle12°C
- Bellingham14°C
- Westport13°C
- Tacoma11°C
- Port Angeles11°C
- Oak Harbor11°C
- Friday Harbor11°C
- Bainbridge Island12°C
- Camano11°C
- Anacortes13°C
- Everett12°C
- Gig Harbor12°C
- North Cove14°C
- Port Townsend11°C
- Bay Center15°C
- Aberdeen13°C
- Neah Bay12°C
- Marietta14°C
- Port Orchard12°C
- La Push12°C
- Chinook14°C
- Moclips13°C
- Copalis Beach13°C
- Ocean Park14°C
- Rocky Point12°C
- Chico12°C
- Pysht11°C
- Tokeland15°C
- Ilwaco14°C
- Oysterville14°C
- Silverdale12°C
- Southworth12°C
Coastal Seas and Oceans
Water Temperature in Lakes and Rivers
Popular Lakes
Popular Rivers
Popular Places
Water Temperature and Swimming Overview
Regions and Map
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- Vermont
- Virginia
- Washington
- West Virginia
- Wisconsin
- Wyoming
Water Temperature Trends
Washington State’s waterways offer a wide range of temperatures due to its diverse geography, including the Pacific Ocean coastline, rivers, and numerous lakes. Along the Pacific Ocean coast, water temperatures are generally cool year-round, averaging between 45°F to 55°F (7°C to 13°C). Even in summer, the water remains cold, making wetsuits necessary for activities like surfing or kayaking. The Puget Sound, a sheltered inlet of the ocean, also stays cool with temperatures typically ranging from 50°F to 55°F (10°C to 13°C) in summer.
In Washington's rivers, water temperatures vary significantly based on location and season. Mountain-fed rivers like the Skagit and Yakima can be frigid, especially in spring, when melting snow keeps temperatures between 40°F and 50°F (4°C to 10°C). During summer, warmer stretches of rivers may reach 60°F to 70°F (15°C to 21°C), offering more comfortable conditions for swimming, tubing, and fishing.
Lakes in Washington, such as Lake Chelan and Lake Washington, show more seasonal fluctuation. In summer, lake surface temperatures can warm up to 65°F to 75°F (18°C to 24°C), providing ideal conditions for swimming and boating. However, deeper waters often remain much colder, and smaller alpine lakes stay chilly even in peak summer, rarely exceeding 50°F (10°C). These varying water temperatures make Washington a destination for diverse aquatic activities, from adventurous cold-water sports to leisurely summer swims.