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Soufrière Weather in September
During September, Soufrière experiences very high daytime temperatures of 31°C (88°F) and cooler nights around 26°C (79°F). Expect quite a bit of rainfall. Around 128 mm (5 in) is typical.
Rainfall in Soufrière in September
Analyzing past climate data, one can expect approximately 24 days of rain, averaging 128 mm (5 in). Rain falls regularly this month and can be quite heavy when it does. Showers can be substantial, so waterproof gear is a good idea.
Temperature in Soufrière in September
September in Soufrière brings typical temperatures with highs around 31°C (88°F) and lows of 26°C (79°F). Sunshine and humidity can make it feel even warmer than the raw temperature suggests. With overnight lows of 26°C (79°F), nights stay very warm. Air conditioning makes a real difference if you're sensitive to heat. A cold shower before bed can also help you get to sleep more comfortably.
Sunshine in Soufrière in September
Enjoy a sunny month with about 238 hours of sunshine, the clear skies make Soufrière even more beautiful.If you prefer dry days with pleasant temperatures, September may not be the ideal month to visit Soufrière. Our weather planner can help you explore destinations with more pleasant weather conditions.
Soufrière Temperature in September
Min Temperature
26°C (79°F)
Max Temperature
31°C (88°F)
Chance of Rain
79%
Precipitation
128 mm (5 in)
Rainy days
24 days
Humidity
81% *
Sunshine
238 hours *
Percentage Sunshine
*
* Data from: Saint Lucia, Saint Lucia (20 KM, 12 Miles).
Soufrière Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Soufrière - and find the best time to visit.
Daily Historical Temperatures
47-year average (1976-2025)
Based on our historical records, temperatures in Soufrière typically stay consistent throughout September, with daily highs averaging around 31°C (88°F). Nights are warm, with lows around 26°C (79°F).
Average temperatures in September
Historical weather records for Soufrière in September
Browse day-by-day weather records for Soufrière spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Soufrière historical weather extremes in September
Based on 22 years of weather observations in Soufrière between 2004 and 2026, these are the recorded extremes.
- The warmest day in September was on September 22, 2025, with a maximum of 33°C (91°F).
- Soufrière experienced its chilliest September day on September 18, 2005, reaching only 26°C (79°F).
- Soufrière registered its coldest September night on September 17, 2007, with temperatures dropping to 22°C (72°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 Soufrière in September
Warm weather calls for comfortable, breathable clothing in September. 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. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.
What To Do in Soufrière in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming9/10 -
Cycling7/10 -
Walking7/10 -
Camping7/10 -
Outdoor sports7/10
Soufrière 3-Day Forecast
More climate data for Soufrière
Temperature Rainfall Sunshine Humidity
See the full Soufrière 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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