This blog was written in August 2024. It was updated in October 2025.
Days on San Juan Island are a dream. Sun-soaked views, unmatched scenery, and a gorgeous mix of arts, culture, and coastal cuisine make this corner of the Pacific Northwest practically perfect. We might be a little biased, but really—what’s not to love about our island archipelago?
And while there’s no shortage of daytime activities to keep you busy, there’s something truly special about our nights, too. Beyond the starry skies, you’ll find the waters around the island glowing with Washington bioluminescence—a breathtaking natural wonder that lights up the Salish Sea.
It’s Getting Lit
We’re not Nobel-winning scientists, but we do know a thing or two about bioluminescence on San Juan Island. Bioluminescence is the light produced and emitted by living organisms, and on land, fireflies are the reigning champions. In the water, though, this natural glow comes alive as microscopic sea creatures light up whenever waves or a paddle stir them.
The glow is at its brightest at a bioluminescent beach on San Juan Island. That’s thanks to nutrient-rich waters stirred up by strong ocean currents, which attract all kinds of tiny microorganisms. Among them is the local star: Noctiluca, a single-celled protist that lights up whenever the water around it moves.
For the best bioluminescence views on San Juan Island, head to Garrison Bay, Westcott Bay, or Griffin Bay near Friday Harbor. The glow is especially vibrant after warm, sunny summer days and during the new moon.
5 Unforgettable Ways to Experience Bioluminescence on San Juan Island
In our slice of the PNW, bioluminescence is the utterly enchanting spectacle you won’t want to miss. The Salish Sea—one of the most biologically-rich inland seas in the world—provides the perfect home for bioluminescent organisms like dinoflagellates to cast their glow. Calm, clear waters and minimal light pollution make San Juan Island the perfect place to witness these sparkling, almost otherworldly underwater light shows.
Pro tip: Eliminate any possibility of bioluminescence-based FOMO by visiting in the summer. While San Juan Island stuns year-round, bioluminescence in the Salish Sea is most active after hot and sunny days—and most visible during the new moon. Join us from June to August for this dazzling display that will remind you just how beautiful our world is.
If you’re ready to see this magical light show for yourself, there are plenty of ways to experience it—whether you want to stay onshore and capture that perfect Instagram shot, paddle through the glowing water, or even take the plunge.
Here are 5 unforgettable ways to experience bioluminescence on San Juan Island:
- Take a Guided Night Kayak Tour
Looking for the ultimate way to see the glowing waters of the Salish Sea? A San Juan Islands bioluminescent kayak tour is hard to beat. A host of outfitters offer San Juan Islands kayak rentals and tours—including Friday Harbor and Roche Harbor-based San Juan Outfitters.
Don’t forget to check out local favorite, Discovery Sea Kayaks—they’ve been offering bioluminescence kayak tours for more than 15 years. Every time your paddle slices through the water, you’ll be treated to your very own underwater fireworks show.
- Watch from the Shoreline
Not up for paddling? Head to a quiet, dark beach—like Westcott Bay or Garrison Bay—and you might spot tiny bursts of blue-green light where waves break or the water ripples. A calm night and minimal light pollution make all the difference. - Try Paddle Boarding or Canoeing After Dark
For a slower pace, some tour companies also offer night paddleboarding or canoeing. It’s an incredible feeling to drift through glowing water with light trailing behind every stroke. Make sure to go with a guide if you’re new to nighttime paddling. - Brave a Bioluminescent Swim
If you’re adventurous (and don’t mind chilly water!), wading in during a warm summer night can be unforgettable while every splash illuminates the sea around you. Don’t forget to check conditions first. - Combine Stargazing and Photography
Bring your camera and enjoy the show above and below. On clear, dark nights, the stars reflect off the water while the sea glows beneath you—making for one truly magical San Juan moment.
Local Tip: Dress warmly, wear water-friendly shoes, and book your kayak tour early—summer nights fill up fast!
Take Your Pick: How to Experience Bioluminescence on SJI
Whether you’re jonesing for that picture-perfect Instagram post or want to get up close and personal with this one-of-a-kind light show, as you can see, there are several ways to experience bioluminescence on San Juan Island. Our home boasts a slew of easily accessible beaches fit for viewing this phenomenon. We don’t need to remind you that east-facing locales will get darker more quickly, so places like 4th of July Beach and Jackson Beach won’t disappoint when it comes to your bioluminescence plans.
For those of you who take us up on our idea to take a late-night dip to witness bioluminescence in its full splendor, make sure you don the proper gear (we recommend wearing a wetsuit) and always keep safety top of mind!
Meet the Magic of Lakedale
No matter how you choose to experience it, witnessing San Juan Island bioluminescence is a once-in-a-lifetime adventure. From gliding through glowing waters on a kayak to spotting shimmering light at a bioluminescent beach in Washington, every moment feels magical.
For the best experience, visit during the summer and around a new moon—you’ll leave with unforgettable memories and plenty of photos to remember the shimmering display.
Looking for the perfect place to stay during your bioluminescence experience? Lakedale Resort offers top-notch luxury, stunning views, and a prime location on San Juan Island. Book your stay online or call 800-617-2267 to secure your spot.
The Lodge at Lakedale [/caption]