San Juan · Puerto Rico
Expect a relaxed paddle on calm lagoon waters after dark, usually in small groups of 6-12 people. Guides provide basic instruction, LED-lit kayaks that create a glowing effect on the water, and narration about local wildlife and city lights. Most trips last 90 minutes to two hours. It's easy enough for beginners and families, though you'll get wet and may sit in a slightly awkward position. Bioluminescent plankton can sometimes be seen, but it's not guaranteed every night.
The best time is December through April when temperatures are pleasant and rain is less likely. Summer and fall bring higher heat, humidity, and occasional heavy showers that can cancel tours. Expect to pay around $45–75 per person for a standard guided night trip including equipment and a short orientation. Private or longer outings run higher.
Choose the basic LED night kayak tour if it's your first time; skip add-ons like photos or “premium” boats that don't add much value. Bring a waterproof bag for your phone and a change of clothes for afterward – lockers are rarely available. Book directly with operators rather than big reseller sites to avoid inflated prices and last-minute changes.