Saint Lucia in August: Weather, Crowds & What to Expect

Season
Low Season
Temperature
25-31°C (77-88°F)
Crowds
Low
Prices
Low
August is in the heart of the Caribbean wet and hurricane season; heavy rain and occasional storm systems can occur. Tourist numbers are low compared with the dry season and many hotels run promotions. Monitor tropical weather forecasts if traveling now.

Climate Map for August

Saint Lucia average temperature in August
-30°-20°-10° 10°20°30°40°

Average temperature across Saint Lucia in August.

City Weather in August

City High Low Rain UV Feels
Gros Islet 31° 25° 236 mm extreme Hot
Castries 30° 24° 219 mm extreme Hot
Dennery 31° 25° 238 mm extreme Hot
Laborie 31° 25° 266 mm extreme Hot
Choiseul, Saint Lucia 31° 25° 261 mm extreme Hot
Vieux Fort, Saint Lucia 31° 25° 261 mm extreme Hot
Micoud, Saint Lucia 31° 25° 261 mm extreme Hot

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

North Coast & Rodney Bay (Castries, Gros Islet, Pigeon Island, Cap Estate)

August is hot and humid with frequent heavy showers and an elevated hurricane risk as the Atlantic season peaks; however, many days are still sun-dappled between storms, and the north coast’s breezes help keep conditions workable. Sailing schedules may be disrupted by rough seas; if you plan boat trips, allow flexibility and check marine advisories. Expect fewer international tourists compared with winter, so you can find lower rates and quieter marinas when the weather cooperates.

West Coast & Soufrière (Pitons, Soufrière town, Anse Chastanet, Sugar Beach)

By August the western coast sees frequent cloudbursts and the highest seasonal sea-swell risk; many travelers avoid the island during the hurricane peak, but on calmer days diving remains rewarding around the protected marine reserve. If you’re staying in Soufrière, check cancellation policies for volcano and boat tours and always have a dry-bag for electronics. Reduced crowds mean lower accommodation prices if you’re willing to be flexible with your plans.

Central Highlands & Rainforest (Mount Gimie, Tet Paul, interior trails and waterfalls)

August in the interior is warm and wet with occasional heavy downpours that swell rivers and make for dramatic waterfall displays - excellent for photographers though trickier for hikers. Trail maintenance varies, so choose well-marked routes with local guides and avoid river crossings after storms. Bring a dry bag for electronics, long sleeves for insects, and accept that views may be cloud-obscured on many days.

East & South Coast (Dennery, Micoud, Vieux Fort, Hewanorra, Atlantic coast beaches)

August often brings frequent heavy showers and the highest seasonal storm risk - the east coast picks up the brunt of passing squalls and larger ocean swells. Many travelers avoid this month, but those who come find quiet beaches and reduced prices; always check forecasts before heading to more remote coastlines. A waterproof daypack, flexible itineraries, and refundable accommodations are wise in August.

Events & Festivals in August

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