July 14, 2025
When Is the Best Time to Kayak the San Juan Islands?
We get this question a lot: “When should I plan my kayaking trip to the San Juan Islands in Washington State?” To help you make the best choice for your adventure, let’s break it down by weather, crowds, and wildlife. 🌦️
☀️ Weather: What to Expect Each Season
The San Juan Islands may be in the Pacific Northwest, but we get far less rain than the mainland. Still, rain is part of the coastal charm, so pack layers and keep expectations flexible.
April to June, Spring weather can be unpredictable with wind and scattered showers. That’s why we offer limited tours during April and May, focusing on Half-Day and a few Overnight Kayak Tours. It’s a magical time to paddle the quiet waters and take in the fresh sea air, just bring your sense of adventure (and yes, we provide waterproof gear!).
June to August: High Season By late June, the sun settles in and the temperature rises, kicking off our full tour calendar. July and August are prime times for paddling. Warm days, brilliant sunsets, and calm waters make for ideal conditions. If you’re a fair-weather traveler, this is your window—but book early! Hotels and tours fill quickly.
September to October: Wild Card Season. Early September often mirrors summer, but autumn’s chill can sneak in by late September. October paddling offers bluebird skies and crisp air—pure magic if the rain holds off. Just remember, days grow shorter, so pack cozy clothes for evenings in town.
👥 Crowds: Timing Your Escape
Post-COVID travel patterns have been unpredictable. Think of visitation as a bell curve: light in April, peaking in July and August, and quiet again by October.
- July–August: Expect peak crowds, but also peak weather.
- Shoulder seasons: April–June and September–October are less hectic, with weekends being the busiest.
No matter when you visit, we keep our kayak groups small so you can enjoy a personalized, peaceful experience on the water.
🐋 Wildlife: When Nature Shows Off
In the past, the Southern Resident Killer Whales would pass along San Juan Island in search of salmon, mostly from June to early September.
But as salmon runs dwindled, Bigg’s Killer Whales (also known as Transient Orcas) have become more common. These whales hunt marine mammals like seals and sea lions, and they can show up any time of year.
And good news—most marine wildlife in the San Juans is here year-round, so you’re always in for a treat.
✨ Bioluminescence: Nature’s Light Show
Our bioluminescent kayak tours have become fan favorites, and for good reason. Summer months—especially July through September—offer the most dazzling displays, as the glowing biomass builds with the long days.
Unlike some outfitters who run tours nightly, we carefully select dates around the darkest moon phases, ensuring the moonlight won’t wash out the shimmer. That way, you don’t just see the bioluminescence—you’re mesmerized by it.
A Kayak Guide’s Perspective
As guides, we’re partial to the early and late seasons. There’s something magical about paddling through misty mornings with barely a soul around. Fewer powerboats, peaceful waters, and cozy vibes make for a memorable experience.
But honestly? No matter when you go, kayaking the San Juan Islands is spectacular. So if the opportunity knocks, answer it. Don’t wait for the perfect time. Just show up, paddle out, and let the islands work their magic.
Questions or comments? Phone us at or send an email to info@discoveryseakayak.com. You can also visit our contact page and submit an inquiry via our contact form.
Posted In: Discovery Sea Kayaks
