The Seattle Water Calendar

Every event worth getting on the water for, month by month. Boat parades, fireworks, floating concerts, and the quiet weeks in between.

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Seattle has a season for everything. Here is the whole year.

Boat parades in May. Fireworks in July. A DJ boat in August. Lighted ships in December.

Most people find out about these the day after they happen.

So we keep this list. Every event worth getting on the water for, in order, with links to the organizers.

We rent the board that gets you there. See full pricing, or browse where to paddle.

Spring

The water wakes up. Long evenings start and the boating season officially opens.

May

Opening Day of Boating Season

Montlake Cut and Lake Union

Seattle’s biggest boating tradition, traditionally the first Saturday in May. A decorated boat parade runs the Montlake Cut while crowds line both banks. Paddlers raft up along the edges to watch.

May to Sept

Duck Dodge

Lake Union

A gloriously unserious sailboat race every Tuesday evening all summer. Themed nights, costumes, and a party at the end. Fun to paddle out and watch, just stay clear of the racing fleet.

Summer

Peak season. Warm water, festivals, fireworks, and the busiest weekends of the year.

July 4

Fourth of July on Lake Union

Lake Union

The fireworks barge anchors on Lake Union and a huge flotilla gathers to watch. Spectacular from the water, but it is crowded and dark. Bring lights, go early, and stay well clear of the barge exclusion area.

July

Milk Carton Derby

Green Lake

A Seafair tradition where homemade boats built from milk cartons race across Green Lake. Very family friendly and a great excuse to be on the calmest water in the city.

July 31 to Aug 2

Seafair Weekend

Lake Washington

The Blue Angels and the unlimited hydroplanes, 2026. Important: the race course and air show box are a Coast Guard restricted zone and no vessel may enter. Paddle outside it, or pick a different lake.

A few Saturdays

Seattle Paddle Rave

Lake Union

A DJ boat anchors on Lake Union and a thousand paddlers dance around it at sunset. Free, and anyone with a board can join. Dates drop about two weeks ahead.

Aug

Warmest water of the year

Lake Sammamish

Late summer is when the shallow lakes hit their peak temperature. Lake Sammamish is usually the warmest swimmable water around Seattle, which makes August the friendliest month to learn.

Fall

The quiet reward. Glassy mornings, no crowds, and color in the mountains.

Sept

The best paddling month nobody talks about

Everywhere

Boat traffic drops off after Labor Day but the water stays warm and the mornings turn to glass. If you only paddle once a year, September mornings are the move.

Oct

Fall color on the mountain lakes

Cascades and I-90

Larch and maple color comes to the Cascade lakes in October. Rattlesnake, Kachess, and Diablo are stunning and nearly empty. The water is cold, so dress for it.

Winter

Short days, serious cold, and one genuinely magical event.

Dec

Christmas Ship Festival

Lakes and Puget Sound

A parade of lighted ships tours local waterfronts through December with choirs singing on deck. Most people watch from shore, and honestly that is the right call in December water temperatures.

Any month

Things that are not on anyone’s calendar but should be.

Monthly

Full moon paddles

Lake Union and Green Lake

A calm lake under a full moon is one of the best paddles you will ever have. Go with a friend, bring a white light, and stick to small, protected, no-motor water.

Several a year

Discover Pass free days

Washington State Parks

Washington waives the Discover Pass parking fee on a handful of days each year. Handy for Lake Sammamish State Park and Lake Easton, which both need one the rest of the time.

Multi-day

Camping and road trips

The whole state

Not an event, just the best value we offer. A full week is capped at $160, so you can string several of these together on one booking.

Dates move year to year. We list the pattern and link to each organizer so you can confirm before you go. We are not affiliated with any of these events. Always check current Coast Guard notices and local rules before launching.

Every Rental Is a Complete Lake Day Kit

$175 of premium gear. Included free with every single rental.

USCG life vestsUSCG life vests$30
Electric pumpElectric pump$45
Dry bagDry bag$25
Waterproof phone caseWaterproof phone case$20
Bluetooth speakerBluetooth speaker$40
Leg leashLeg leash$15

Buy it yourself: $175. Your price today: included free.

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No Hidden Fees

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Seattle Water Calendar Paddle Board Rental FAQ

What is the biggest paddling event in Seattle?
Opening Day of Boating Season in early May draws the biggest crowds, with a decorated boat parade through the Montlake Cut. The Seattle Paddle Rave on Lake Union is the biggest event aimed at paddlers specifically, with over a thousand boards and kayaks around a DJ boat.
Can I paddle during Seafair?
Not in the race area. The Coast Guard enforces a restricted zone over the hydroplane course and air show box during Seafair weekend, and no vessel may enter it. You can paddle elsewhere on the lake outside the zone. See our Seafair guide for where to launch.
When is the water warmest for paddling near Seattle?
Late July through August. Shallow lakes warm up the most, so Lake Sammamish and Green Lake are usually the warmest. September is the underrated month, with warm water, glassy mornings, and far fewer boats.
Can I paddle in Seattle in the winter?
You can, but treat it seriously. Water temperatures in winter are cold enough to cause cold shock, daylight is short, and a swim is genuinely dangerous. If you go, stay on small protected water close to shore, dress for immersion rather than air temperature, and never go alone.
Do I need a permit or pass for these events?
The events themselves are generally free to watch from the water. What you may need is parking. Lake Sammamish State Park and Lake Easton require a Washington Discover Pass, and many city parks charge for summer parking. Washington waives the Discover Pass fee on several free days each year.
What is included with a rental?
Everything. Your board or kayak, paddle, USCG life vests, an electric pump, a dry bag, a waterproof phone case, and a Bluetooth speaker. That is about $175 of gear, free with every rental, and it all packs into any trunk.

Do Not Miss the Next One

Book a board for any date on this calendar. A full week is capped at $160, everything is included, and it is backed by our Perfect-Day Guarantee.

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