December is part of the dry high season with warm days, lower rainfall and a busy tourist scene for the holidays. Book well in advance for accommodation and popular tours. Nightlife and cultural events are lively through the month.
Average daily low and high (°C) and monthly rainfall. The badge shows how it feels, allowing for humidity.
Average temperature across Saint Lucia in December.
Castries, Gros Islet, Pigeon Island, Cap Estate
December reintroduces the busy dry season rhythm - bright, warm days, steady trade winds, and lively holiday crowds in Castries and Rodney Bay. This month is popular for cruise calls and festive events; book tours and restaurants early and be prepared for higher prices. Bring summer clothing and a light layer for evenings; the seas are typically calm enough for frequent boat excursions and snorkeling near Pigeon Island.
Pitons, Soufrière town, Anse Chastanet, Sugar Beach
December is back to the busy, sunny pattern: reliable warmth, calm seas for diving around the Pitons, and growing crowds as holiday travelers arrive. The Sulphur Springs area and Diamond Botanical Gardens fill with visitors; book tours and Piton-guides early. Evenings stay warm but breezy, making for comfortable al fresco dinners with dramatic island views.
Mount Gimie, Tet Paul, interior trails and waterfalls
December in the highlands is drier and breezy, with crisp mornings that are particularly pleasant for sunrise hikes and panoramic views across the island. The air feels fresher than at sea level, making this a popular month for day trips to lookout points and the Tet Paul walk; however, holiday crowds on popular trails increase in mid-December. Carry a light sweater for dawn and evening, and expect excellent conditions for photography and wildlife spotting.
Dennery, Micoud, Vieux Fort, Hewanorra, Atlantic coast beaches
December is windier and drier, with strong northeast trades cooling the east and south coasts and smoothing much of the surf outside exposed points. Vieux Fort and the Hewanorra area see increased flights and visitor traffic as holiday travel ramps, and beaches near the airport become popular stopovers. A windproof layer for evenings and sun protection for daytime exploration keep you comfortable during outdoor activities.
There are no major festivals or events in Saint Lucia during December to be aware of.
See how December compares with the rest of the year, then read the full guide.