Things to Do in Roseau in May

The Boiling Lake trek is Dominica's toughest and most satisfying full-day hike, 13 km (8 miles) out and back from Titou Gorge that rises through cloud forest scented with moss and wet bark, descends into the sulfur-stained Valley of Desolation where the ground steams and the air carries the sharp, mineral tang of active volcanic terrain, and finishes at the world's second-largest boiling lake: a grey-blue cauldron forever wrapped in vapor. May is arguably your best slot. The route is far quieter than the February, April rush, dawn temperatures at the trailhead linger near 22°C (72°F) before the day warms, and the forest after recent rain glows in shades the dry-season photos never manage. Budget a full day, six to eight hours return depending on speed. Licensed guides are compulsory and work out of Roseau. Reserve at least a week in advance.

Dominica ranks among the few places on Earth where sperm whales live year-round rather than drop by seasonally. The deep Atlantic canyons off the west coast, plunging thousands of meters a short hop from Roseau, deliver the cold, prey-rich depths these giants require. May seas are generally smoother than the latter half of the year, and morning departures from the Roseau waterfront keep you on the water for two to three hours. On a decent day, which May serves up more often than not, you'll watch animals blow at the surface and fluke-dive within the first hour. The sound of a sperm whale exhale, a low, wet whoosh utterly different from a humpback's plume, sticks in the memory. The same routes regularly yield pilot whales, bottlenose dolphins, and now and then false killer whales.

The reef takes its name from the steady stream of geothermal bubbles rising through volcanic sand and coral, you'll feel the temperature shift as you drift between warm and cool layers, Champagne Reef lies 8 km (5 miles) south of Roseau near Pointe Michel. Trumpetfish, parrotfish, seahorses, and sea turtles cruise here, largely indifferent to snorkelers, and the shallow zones you can reach without tanks host most of the action. May visibility usually tops 20 m (65 ft), and the site is far less congested than during the January, March cruise season when groups can swell past 40. Divers can drop to a deeper wall where the bubble streams thicken into something like a natural jacuzzi. Gear rental is on hand from nearby operators.

Twin waterfalls slice through a jungle-green gorge only 8 km (5 miles) from central Roseau. Trafalgar Falls is the island's easiest hike: a paved stroll to the overlook, then a boulder-hop to the pools. In May the river swells above dry-season levels, so mist hangs in the humid air, the crash of water rebounds off the cliffs, and cold mountain water slides over sun-warmed volcanic rock. One fall feeds a hot spring, the other a cold cascade, locals have toggled between the two for generations. Arrive by 9 AM and you'll share the rocks with hummingbirds, not the cruise crowds.

Titou Gorge is a slim volcanic cleft 15 km (9 miles) from Roseau, its black basalt walls barely shoulder-width apart. Swim through cool, gin-clear water that glows turquoise against the dark stone. At the far end a slender waterfall spills into a deep pool. May's moderate rainfall keeps the current gentle, by August and September the flow can turn the swim into a workout. The gorge doubles as the Boiling Lake trailhead, so hardened hikers often finish the grueling trek with an ice-cold float to wash off the valley's heat. Allow an hour for the water section alone.

Founded in 1891, the Roseau Botanical Gardens rank among the Eastern Caribbean's oldest. Towering trees drop the mercury several degrees below the capital's streets, and the grounds butt against forested hills where endangered Sisserou and Jaco parrots sometimes flash crimson wings at dawn. Behind the gardens, old Roseau unrolls in a grid of clapboard verandas laced with sea salt and the drift of wood smoke from sidewalk grills. The Saturday market opens around 6 AM at Old Market Plaza. Farmers unload soursop, passionfruit, and roasted ground provisions, and the scent fills three city blocks.