Soufrière weather in September

September in Soufrière: sweltering, rainy, with clean air — fine if you can take 19 rainy days.

Updated September 2026 · climate normals from ERA5 reanalysis

Soufrière🇱🇨 Saint Lucia · Lesser Antilles · Beach81
  1. 89Jan
  2. 90Feb
  3. 91Mar
  4. 90Apr
  5. 89May
  6. 85Jun
  7. 83Jul
  8. 82Aug
  9. 81Sep
  10. 81Oct
  11. 82Nov
  12. 88Dec

#11 of 12 months in Soufrière · #663 of 1413 destinations to visit in September · comfort 81/100 (tier A)

Days
32°C
Nights
26°C
Wet days
19
Sun
10.7 h
Humidity
78%
Daylight
12 h
Soufrière, Saint Lucia
Photo: Simon Hurry · Pexels

Traveller notes on Soufrière in September

St. Lucia's forum is upfront that September sits at the heart of hurricane season, though posters noted the island's position on the belt's southern edge means it's rarely directly affected. Around Soufrière specifically, rainforest storms can turn genuinely intense but blow through fast, often leaving a rainbow behind - hot, humid, sunny and breezy is the day-to-day baseline. One early-September visitor described surprisingly manageable heat with mostly sunny days and just a little rain, and several posters pointed to reduced rates and thinner crowds as the real upside of visiting this time of year.
StLuciaWestCoastRegular · September · 1 month ago · Read more on Tripadvisor ↗

Other months in Soufrière

Forum posters describe March as beautiful and squarely in the dry season - hot, sunny, clear blue skies with balmy trade winds and calm seas, one of the drier months of the year overall. Posters are careful to note this doesn't mean rain-free: Soufriere specifically is called out as wetter than the north of the island, a real local microclimate effect from its position near the Pitons, so an occasional heavy shower remains possible even in the generally dry March window. One visitor who spent three weeks in the area during February-March described wonderful weather overall, with only a handful of heavy showers across the whole stay.
Tripadvisor community · March · 1 month ago · Read more on Tripadvisor ↗

Add your own note from Soufrière's card on the map.

Soufrière climate normals — September

Daytime high32°C / 89°F🔥 sweltering
Nighttime low26°C / 78°F
Feels like (high)37°C / 99°F
Sea temperature30°C / 87°F♨️ bath-warm
Rainfall129 mm / 5.1 in🌧 rainy
Rainy days19 days
Humidity78%💦 very humid
Dew point25°C / 76°F
Sunshine10.7 h/day
Daylight12.2 h
Wind21 km/h / 13 mph
Air quality (US AQI)32🍃 good

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Soufrière in September

How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.

Quietschool holidays in 2 of the markets that fill it, one of its worst months for weather(estimated)

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Peak crowdsBusyShoulder seasonQuiet

Best months for Soufrière's weather

Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).

Fair weatherSoufrière's weather doesn't swing hard through the year — comfort stays fairly steady in every month.

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What's on in Soufrière in September

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Hazard

    Atlantic hurricane season

    1 Jun – 30 Nov

    Beryl came through at the end of June 2024 and Tomas before it, and the steep ground behind the town is what turns a tropical storm into landslides and blocked roads. Mid-August to mid-October is the concentrated part. Source ↗

  • Festival

    La Rose flower festival

    28 Aug – 1 SepMajor festival

    One of the island's two flower societies takes 30 August, dresses in red and processes with song from church to feast. Its rival in white, La Marguerite, gets 17 October, and villages keep to one side or the other. Source ↗

What's on around the world in September →

Nearby, and something's on

Within 300 km of Soufrière — a day trip or a short hop — with something on this month. Never part of the comfort score.

Where is Soufrière?

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Soufrière in September — FAQ

Is September a good time to visit Soufrière?
September in Soufrière: sweltering, rainy, with clean air — fine if you can take 19 rainy days. It ranks #11 of 12 months for Soufrière on SeasonMap's comfort score (81/100).
What is the weather like in Soufrière in September?
In September, Soufrière averages a daily high of 31.8°C and a low of 25.5°C, with about 129.2 mm of rain over roughly 18.9 rainy days.
What is the air quality in Soufrière in September?
Soufrière has a mean US Air Quality Index of about 32 in September.

Within 300 km: Bridgetown's Hawksbill nesting around 1 May – 31 Oct, and Tobago's Emancipation and Independence on 31 Jul – 1 Sep.