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Cap Estate Weather in September
Cap Estate in September averages 30°C (86°F) during the day and 26°C (79°F) at night. Keep in mind that quite a bit of rainfall is expected this month.
Rainfall in Cap Estate in September
Analyzing past climate data, one can expect approximately 25 days of rain, averaging 140 mm (5.5 in). This is a wet month with frequent and often heavy showers. Both the number of rain days and the total rainfall are high.
Temperature in Cap Estate in September
Cap Estate in September gets highs of 30°C (86°F) during the day and drops to 26°C (79°F) at night. It's usually most comfortable outside during the morning and later in the day. At 26°C (79°F) overnight, the heat doesn't let up much after dark. If you're staying somewhere without air conditioning, a cold shower before bed and keeping the air moving can help.
Sunshine in Cap Estate in September
With approximately 238 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.September in Cap Estate has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.
Cap Estate Temperature in September
Min Temperature
26°C (79°F)
Max Temperature
30°C (86°F)
Chance of Rain
82%
Precipitation
140 mm (5.5 in)
Rainy days
25 days
Humidity
81% *
Sunshine
238 hours *
Percentage Sunshine
*
* Data from: Saint Lucia, Saint Lucia (9 KM, 5 Miles).
Cap Estate Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Cap Estate - and find the best time to visit.
Daily Historical Temperatures
49-year average (1976-2025)
Based on our historical records, temperatures in Cap Estate typically stay consistent throughout September, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 25°C (77°F).
Average temperatures in September
Historical weather records for Cap Estate in September
Browse day-by-day weather records for Cap Estate spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Cap Estate historical weather extremes in September
The extremes listed below come from historical weather data collected in Cap Estate from 1990 through 2026.
- The warmest day in September was on September 3, 2003, with a maximum of 34°C (93°F).
- On September 18, 2008, Cap Estate saw its coldest September day with temperatures maxing out at 26°C (79°F).
- The coldest night in September in Cap Estate was on September 11, 2011, with a minimum of 20°C (68°F).
Best Places in Saint Lucia in September
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 September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Cap Estate in September
Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Prepare for significant rainfall with proper waterproof clothing and shoes. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.
What To Do in Cap Estate in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
-
Swimming9/10 -
Cycling7/10 -
Walking7/10 -
Camping7/10 -
Outdoor sports7/10
Cap Estate 3-Day Forecast
More climate data for Cap Estate
Temperature Rainfall Sunshine Humidity
See the full Cap Estate climate overview or explore weather in Saint Lucia.
Popular in September
Where to go in September - average daytime high across popular destinations.
Marigot Bay
31°C (88°F) Castries31°C (88°F) Laborie30°C (86°F) Rodney Bay Village31°C (88°F) Cap Estate30°C (86°F) Soufrière31°C (88°F) Gros Islet31°C (88°F) Vieux Fort30°C (86°F) Bucket list
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