Month guide · Saint Lucia
Saint Lucia in September
What September is really like in Saint Lucia: weather, crowds, prices, events and what to pack.
Updated By the AMZBooking editorial team
Photo: Caribbeandy, CC BY-SA 4.0
Quick answer
September is a month many travellers avoid. Expect average highs of 31°C (88°F), lows of 25°C (77°F), about 18 rainy days and roughly 12.2 hours of daylight. Peak hurricane season with heavy rain; some hotels and restaurants close for maintenance.
Key facts
- Average high / low
- 31°C (88°F) / 25°C (77°F)
- Rainy days
- About 18
- Daylight
- About 12.2 hours
- Sea temperature
- 29°C (84°F)
- Crowds
- Very quiet
- Hotel prices
- Lowest
Weather in September
September is the 6th-warmest month in Saint Lucia: days average 31°C (88°F) against a yearly average high of 30°C (86°F), and nights fall to about 25°C (77°F). Rain falls on roughly 18 of its 30 days. Compared with August (31°C (88°F)), September is about as warm; by October highs stay near 31°C (88°F).
- Sunrise (15 September)
- About 05:53
- Sunset (15 September)
- About 18:05
- Daylight
- About 12.2 hours
- Sea
- 29°C (84°F)
Hurricane peak (August–October). The wettest and stormiest months, with the warmest sea and lowest prices; watch forecasts and book flexibly.
Crowds and prices
On a 1–5 scale, September rates 1 for crowds (the peak is January at 5) and 1 for hotel prices (highest in January). That makes September one of the better-value months to book.
Events in September
September has no major recurring festival in Saint Lucia, which usually means easier bookings.
What to do in September
With frequent rain, plan around indoor sights and keep outdoor time flexible.
Nature · Soufrière
Toraille Waterfall
Bring swimwear and visit after lunch, when most tour groups have moved on.
- Time needed
- 45 minutes
- Cost
- Low cost
- Nature
- Kids
- Outdoors
Experience · Rodney Bay and Gros Islet
Rainforest aerial tram and zip-lines at Chassin
At Chassin in Babonneau, inland from Castries, an aerial tram glides through the rainforest canopy with a naturalist guide, and zip-line courses cross the valley.
- Time needed
- 2–3 hours
- Cost
- Expensive
- Kids
- Nature
- Active
- Outdoors
Market · Castries and Vigie
Castries Central Market
Go on a Saturday morning, the busiest market day, and avoid cruise-ship hours if you want a calmer visit.
- Time needed
- 1–2 hours
- Cost
- Free
- Shopping
- Food
- Free
- History
- Rainy day
Nature · Soufrière
The Pitons
Gros Piton and Petit Piton, both over 700 metres high, are volcanic plugs rising directly from the sea south of Soufrière, linked by the Piton Mitan ridge.
- Time needed
- Half a day for viewpoints
- Cost
- Free
- Iconic
- Views
- Nature
- Photo spot
- Free
The sea averages 29°C (84°F) — warm enough to swim. Best beaches near Saint Lucia.
What to pack
For highs near 31°C, lows near 25°C and 18 wet days: light, breathable clothes, a sun hat and high-factor sunscreen; a compact umbrella and waterproof shoes — rain is frequent; comfortable walking shoes.
Is September a good time to visit Saint Lucia?
A month many travellers avoid. If your dates are flexible, January–April are better overall. Compare every month.
Saint Lucia in other months
Questions travellers ask
+Is September a good time to visit Saint Lucia?
It is a month many travellers avoid. Peak hurricane season with heavy rain; some hotels and restaurants close for maintenance.
+How warm is Saint Lucia in September?
Average highs are around 31°C (88°F) and lows around 25°C (77°F).
+Does it rain a lot in Saint Lucia in September?
Expect rain on about 18 days of the month, so pack for wet weather.