Dominica in May: Weather, Crowds & What to Expect

Season
Shoulder
Temperature
24-30°C (75-86°F)
Crowds
Moderate
Prices
Moderate
The start of the wetter half of the year; rainfall increases and showers become more frequent though not yet persistent. Vegetation is lush and waterfalls are fuller, but some mountain trails may be slippery. Travel costs typically decline compared with high season.

Climate Map for May

Dominica average temperature in May
-30°-20°-10° 10°20°30°40°

Average temperature across Dominica in May.

City Weather in May

City High Low Rain UV Feels
Roseau 32° 24° 111 mm extreme Hot
Portsmouth, Dominica 31° 24° 147 mm extreme Hot
Marigot, Dominica 30° 24° 165 mm extreme Hot
Grand Bay, Dominica 30° 23° 112 mm extreme Warm
Mahaut, Dominica 31° 24° 120 mm extreme Hot
Saint Joseph, Dominica 31° 24° 126 mm extreme Hot
Wesley, Dominica 31° 24° 167 mm extreme Hot

High / low are average daily temperatures (°C). “Feels” reflects how hot or cold it feels, allowing for humidity.

Roseau & Southwest Coast (Roseau, Mero, Scotts Head, Champagne Reef)

May brings more humidity and the odd lengthy shower as the wet season approaches; the leeward coast still sees more sunshine than the east, but cloudbursts start to increase. Waterfalls upriver that feed the west beaches swell, which can create stronger currents around river mouths - heed local beach flags. If you plan snorkel or dive trips, monitor weather updates: operators sometimes rearrange schedules ahead of squalls.

North Coast & Cabrits Peninsula (Portsmouth, Cabrits National Park, Calibishie)

May brings a rise in humidity and more quick, soaking showers in the afternoons; inland waterways that feed northern beaches can colour nearshore water after heavy rains. Calibishie’s coastal trails remain worth the visit between showers, though rockier beaches become slicker - sturdy footwear is recommended. Travelers should book boat operators who check conditions, since short-notice cancellations become more common.

East / Atlantic Coast (Castle Bruce, La Plaine, Marigot, Grand Fond)

May increases humidity and rain frequency along the windward coast; persistent morning cloud and midday downpours are common as the wet season approaches. Water levels in rivers and small creeks rise quickly after rain, making crossing some rural tracks risky and slippery. Expect dramatically full waterfalls and powerful surf-great for dramatic landscapes but poor for casual coastal swimming or unsheltered boat trips.

Central Highlands & Morne Trois Pitons National Park (Boiling Lake, Emerald Pool, Trafalgar Falls, Waitukubuli Trail high sections)

May’s humidity and more regular downpours make the mountaintop trails noticeably muddier and slower; the Boiling Lake track can be wet and challenging, though the falls are impressively full. Expect trail detours and pack good waterproof gear, gaiters and a reliable headlamp in case you are still on the trail after a sudden rain. On bright days the mist burns off to reveal dramatic canyon views and vibrant moss-covered forest.

Southern Peninsula & Soufrière Area (Soufrière, Scotts Head peninsula, Grand Bay)

May’s humidity builds and short heavy showers become more common; the peninsula’s rivers swell, making some minor dirt tracks slippery and less reliable for self-drive exploration. The marine life continues to be active though runoff after storms can reduce visibility for dives and snorkels temporarily. Choose dive operators who monitor weather closely and have flexible cancellation policies.

Events & Festivals in May

There are no major festivals or events in Dominica during May to be aware of.