Saint Lucia Weather in August
August in Saint Lucia sees daytime temperatures around 31°C (88°F) and lows of 26°C (79°F) at night. With around 118 mm (4.6 in) of rainfall expected, it's worth packing a rain jacket.
Rainfall in Saint Lucia in August
Typically around 20 days of rainfall are expected, averaging 118 mm (4.6 in) for the month. This month brings frequent, heavy showers. Both the number of wet days and the rainfall totals are on the high side.
Temperature in Saint Lucia in August
August in Saint Lucia brings very high temperatures, with highs of 31°C (88°F) and nights around 26°C (79°F). Indoor breaks or shaded spots can make the warmer part of the day much more comfortable. At 26°C (79°F) overnight, it stays warm after dark. Light, breathable clothing and good airflow in your room make a noticeable difference.
Sunshine in Saint Lucia in August
Expect sunny days throughout the month, with an estimated 248 hours of sunshine. This makes it a pleasant time to visit Saint Lucia.August in Saint Lucia can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Saint Lucia, check out our Saint Lucia's climate page.
Saint Lucia Temperature in August
Min Temperature
26°C (79°F)
Max Temperature
31°C (88°F)
Chance of Rain
68%
Precipitation
118 mm (4.6 in)
Rainy days
20 days
Humidity
80%
Sunshine
248 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Saint Lucia typically stay consistent throughout August, with daily highs averaging around 31°C (88°F). Nights are warm, with lows around 25°C (77°F).
Average temperatures in August
Historical weather for Saint Lucia in August
Browse day-by-day weather records for Saint Lucia spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Saint Lucia historical weather extremes in August
Based on 35 years of weather observations in Saint Lucia between 1990 and 2025, these are the recorded extremes.
- The warmest day in August was on August 29, 2020, with a maximum of 36°C (97°F).
- The coldest August day was on August 14, 1993, with a maximum of 26°C (79°F).
- The coldest night in August in Saint Lucia was on August 30, 2016, with a minimum of 20°C (68°F).
Best Places in Saint Lucia in August
Find out more about the weather in Saint Lucia and which places have the best travel conditions in this month. See all of Saint Lucia in August →
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What to Wear in Saint Lucia in August
Warm weather calls for comfortable, breathable clothing in August. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Saint Lucia in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Saint Lucia, check out our Saint Lucia's climate page.
Temperature Rainfall Sunshine Humidity
See the full Saint Lucia climate overview or explore weather in Saint Lucia.
