As someone who has been chasing flat water and good conditions across the Pacific Northwest, I’ve picked up a thing or two about stand-up paddleboarding around here along the way. Let me walk you through what I know.
Figuring out paddle boarding has gotten complicated with all the opinions and marketing flying around, so let me cut through the noise.

Time of Day Matters Most
The simplest crowd-avoidance trick is showing up early. 6 AM at Green Lake feels like a different lake – flat water, maybe three other people out, herons hunting along the shore. By 10 AM it’s already getting busy.
Weekday mornings are even better if your schedule allows. Tuesday at 7 AM, you might have an entire cove to yourself.
Evening works too, especially in summer when sunset is around 9 PM. The after-work rush dies down by 7:30, and you can paddle into golden hour with minimal traffic.
Less Obvious Spots

Juanita Bay (Lake Washington): Protected bay on the north end of Lake Washington. Calmer than the main lake, fewer powerboats, designated nature area with good bird watching. Put in at Juanita Beach Park.
Mercer Slough (Bellevue): Wetland channels through a nature park. No motorized boats allowed. Feels surprisingly wild for being surrounded by suburbia. Launch from Enatai Beach Park.
Portage Bay: The water between Lake Union and Lake Washington through the Montlake Cut. More residential feel, fewer tour boats, houseboats to paddle past. Put in at the Waterway 19 ramp. Trust me on this one.
Matthews Beach: North Lake Washington. Less developed shoreline, usually emptier than the Kirkland side. Small parking lot limits crowds naturally.
The Off-Season Secret
May and September are prime paddling months that most people ignore. Water temperature is still reasonable (upper 50s to low 60s), air is pleasant, and the summer crowds haven’t arrived or have already left.
Even winter works if you dress for it – dry suit or wetsuit, gloves, hood. The lake is yours from November through March. Just understand the cold water safety implications.
When Crowds Are Unavoidable
If you’re stuck with a sunny Saturday afternoon, at least pick your battles. The south side of Green Lake is busier than the north. On Lake Union, avoid the seaplane path and the stretch in front of the houseboats – everyone goes there.
Or embrace it. Crowded water is still better than no water. Paddle through the chaos, find a gap, and keep moving.
That’s what makes paddle boarding so special to us fellow SUP enthusiasts, honestly.
At the end of the day, the best way to learn is to just get out there and do it. You’ll figure out your own preferences pretty quickly.