Month by month

Dominica in August

A high-humidity month with regular rainfall; river levels rise and some inland roads may be affected. Birding and botanical interest remain strong because of lush growth, but plan extra time for travel. Boat services around the island can be intermittent on windy days.

SeasonLow Season Temperature 24-30°C (75-86°F) Crowds Low Prices Low

NASA CC BY-SA 4.0 Wikimedia Commons

High season Shoulder Low season

Weather by City in August

CityLow / highRain
  • Roseau Hot 25° 32° 240 mm
  • Portsmouth Hot 25° 32° 226 mm
  • Marigot Hot 24° 31° 228 mm
  • Grand Bay Hot 24° 31° 240 mm
  • Mahaut Hot 24° 32° 239 mm
  • Saint Joseph Hot 24° 32° 238 mm
  • Wesley Hot 24° 31° 227 mm

Average daily low and high (°C) and monthly rainfall. The badge shows how it feels, allowing for humidity.

Temperature map

Dominica average temperature in August
-30°-20°-10°0°10°20°30°40°

Average temperature across Dominica in August.

Where to Go in Dominica in August

Roseau & Southwest Coast

Roseau, Mero, Scotts Head, Champagne Reef

August continues the wet-season pattern with warm air, big humidity and a real risk of storms during the island’s hurricane season - keep an eye on regional advisories. The water remains warm and diving is still possible, though visibility can drop after heavy rains that carry runoff into coastal shallows. If you’re visiting for land-based attractions, shorter walks and short scenic drives are lower-risk than remote hikes that the trails can flood.

North Coast & Cabrits Peninsula

Portsmouth, Cabrits National Park, Calibishie

August is hot and often stormy; showers can be long and rivers run full, sometimes making access to more remote coves challenging. The ocean around Cabrits may be too rough for some small-boat activities after storms, but when the trades settle visitors can still find calm mornings for snorkeling. Travel insurance and flexible plans are wise choices during this peak hurricane-risk month.

East / Atlantic Coast

Castle Bruce, La Plaine, Marigot, Grand Fond

August is hot and stormy with frequent squalls and a real chance of tropical storms; the Atlantic coast sees increased wave action and coastal erosion in exposed sectors. Safer sightseeing is often limited to short drives between villages and visits to established lookout points; remote beaches are typically inaccessible. Consider rescheduling if a tropical disturbance is forecast and secure accommodations that can handle power or access disruptions.

Central Highlands & Morne Trois Pitons National Park

Boiling Lake, Emerald Pool, Trafalgar Falls, Waitukubuli Trail high sections

August is often heavy with precipitation and occasional thunderstorms in the highlands; the ground soaks quickly and small rivulets can become raging torrents, closing sensitive trail sections. The cloud forest is saturated and the park is spectacularly green, but logistics are harder: camping pads, sleeping gear and contingency plans are necessary for multi-day routes. Check park notices frequently and anticipate slower travel between trailheads.

Southern Peninsula & Soufrière Area

Soufrière, Scotts Head peninsula, Grand Bay

August offers hot, wet conditions with frequent thunderstorms; river crossings and some backroads can be impacted by runoff and minor landslides in extreme cases. The peninsula’s diving operators run when conditions allow, but expect more cancellations and reschedules as the month carries higher storm risk. Consider concentrating on shore-based experiences - hot springs, local cuisine and cultural visits - if the sea is unsettled.

Events & Festivals in August

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

Planning a trip to Dominica?

See how August compares with the rest of the year, then read the full guide.