Things to Do in Castries in December
December weather, activities, events & insider tips
December Weather in Castries
Temperature, rainfall and humidity at a glance
Is December Right for You?
Weigh the advantages and considerations before booking
- + December flips the switch in Castries. The long, soaking afternoon storms of autumn shrink into quick, sharp showers. When rain arrives, it lasts 15-20 minutes, rinses the heat away, then vanishes. Light bounces off the green hills above the harbour. You get more beach time and more trail hours than October visitors ever see.
- + Northeast trade winds wake up in December. Daytime sits at 77°F (25°C); nights drop to 68°F (20°C). Seventy percent humidity feels gentle under the breeze. Evenings on the waterfront need only a light shirt. The air stays pleasant.
- + Saint Lucia throws its biggest party now. National Day on December 13 packs Derek Walcott Square with the Festival of Light and Renewal. Rodney Bay Marina, 15 km / 9.3 miles north of the cathedral, fills with yachts from the Atlantic Rally for Cruisers. The island buzzes, celebrates, stays busy in the best way.
- + The sea settles after storm season. December delivers calm, clear water. Boat trips down the west coast toward the Pitons run smoothly. Northern bays offer prime snorkelling. Visibility underwater peaks.
- − December equals peak season. Prices and crowds climb. Castries and Rodney Bay rooms sell early. Rates hit their yearly high, the week before Christmas through New Year. Harbour or sea-view rooms go fast to returning families and yacht crews.
- − The UV index hits 8 even under partial cloud. First-timers underestimate it. Trade-wind breeze hides the burn. Skipping sunscreen on a grey morning ends in lobster-red skin by lunch. Boat decks bounce glare off the water.
- − Cruise-ship days remake central Castries. Two or three ships dock at Pointe Seraphine and La Place Carenage. The Central Market and cathedral streets jam shoulder-to-shoulder from mid-morning to mid-afternoon. The town empties once the ships sail. Midday feels like a crush.
Year-Round Climate
How December compares to the rest of the year
| Month | High | Low | Rainfall |
|---|---|---|---|
| Jan | 14°C | 4°C | 2.1 inches |
| Feb | 16°C | 6°C | 1.5 inches |
| Mar | 25°C | 20°C | 4.2 inches |
| Apr | 25°C | 20°C | 0.6 inches |
| May | 24°C | 14°C | 2.9 inches |
| Jun | 27°C | 17°C | 0.9 inches |
| Jul | 30°C | 20°C | 0.3 inches |
| Aug | 29°C | 19°C | 0.5 inches |
| Sep | 25°C | 15°C | 1.3 inches |
| Oct | 25°C | 20°C | 2.0 inches |
| Nov | 25°C | 20°C | 1.5 inches |
| Dec | 25°C | 20°C | 0.6 inches |
Best Activities in December
Top things to do during your visit
Castries Central Market has traded since 1894 under its rust-red iron roof. December brings holiday energy. Nutmeg and cinnamon drift from spice stalls. Charcoal smoke curls from cookshops. Fresh-cut dasheen leaves smell sharp and green. Grab green fig and saltfish. Snag a hot bake stuffed with smoked herring. Stalls overflow with golden apples, soursop, and December cocoa. Morning light slants through roof slats. Dominoes clatter by the entrance. Higgler women call prices in Kwéyòl-inflected English. This is real Castries, not the cruise-terminal version.
December's calm seas make the catamaran run south a highlight. You glide past fishing villages and dense green hills. Twin volcanic spires of the Pitons rise near Soufrière, 35 km (22 miles) south of Castries by sea. Most trips stop at the drive-in Sulphur Springs. The steam carries a rotten-egg tang well before you see it. Next comes a warm mineral mud bath and a snorkel stop in bath-warm, clear water. Trade-wind breeze on deck tricks you into ignoring the sun. Layer on sunscreen you can't feel burning.
Pigeon Island sits north of Castries near Rodney Bay, linked by causeway. A short, sweaty hike climbs to Fort Rodney's 18th-century ruins. Two sheltered, calm-water beaches wait below. The climb takes 20-30 minutes to reach 110 m (360 ft). December trade winds keep it bearable. The summit panorama stretches across Rodney Bay to Martinique on clear days. During ARC season the marina bristles with masts. Shaded grass slopes suit a picnic. Gentle swimming works for families. Bring water; UV 8 burns on the exposed ridge.
Marigot Bay lies 13 km (8 miles) south of Castries, a deep horseshoe of calm water. It looks engineered for postcards yet remains a working harbour and beach. December's settled conditions make the short sail or shuttle smooth. The palm-fringed sandbar stays sheltered from swell. Water turns glassy and warm. Hillsides plunge steeply into the bay. Once day boats leave, the bay quiets fast. It's a softer, more relaxed counterpoint to the Pitons-day intensity.
December's drier trails make the island's interior rainforest far more walkable than in the soggy autumn months, though paths can still be slick and muddy in the deep shade where the canopy stays damp. Working cocoa estates inland from Castries open their grounds for tours that walk you from pod to bean to bar. The smell of fermenting cocoa under banana-leaf cover is earthy and winey, nothing like a chocolate shop. You'll hear the constant ratchet of frogs and the screech of Saint Lucia parrots if you're lucky, feel the sudden ten-degree temperature drop under the canopy, and taste cocoa tea, the spiced local breakfast drink, the way locals make it. A good rainy-day backup since much of it is sheltered.
Castries' nightlife is low-key, but the island's signature night out is the Friday jump-up in Gros Islet, the fishing village just north past Rodney Bay. Once the sun drops, the lanes close to traffic and fill with grill smoke from oil-drum barbecues turning out jerk chicken and fresh-caught fish, speaker stacks pumping soca and old-school reggae, and a crowd that's a genuine mix of locals and visitors. December adds Christmas-season energy and parang music to the soundtrack. It's loud, sweaty, and unpolished in exactly the right way. Go hungry, go with cash, and don't expect it to wind up before the small hours.
Where to Stay in Castries in December
Hand-picked hotels across price tiers for December travellers.
Sandals Regency la Toc All Inclusive Resort and Spa - Couples Only
Mid-Range Check Prices on Trip.com →December Events & Festivals
What's happening during your visit
December 13 is Saint Lucia's National Day, marking the feast of Saint Lucy, the festival of light the island is named for. Castries comes alive after dark as Derek Walcott Square and the waterfront fill with handmade lantern displays, a lantern-making competition, choral and parang performances, and crowds strolling the lit-up streets. It's the most distinctly Castries event of the year and a window into local pride that the cruise-day crowds never see. Arrive in the early evening to watch the lanterns come on at dusk.
Through December, hundreds of yachts complete the roughly 2,700-nautical-mile transatlantic crossing from Las Palmas and sail into Rodney Bay Marina, about 15 km (9.3 miles) north of central Castries. The marina turns into a floating festival of arriving crews, flags, and celebration. Even if you're not a sailor, wandering the docks as boats finish, sometimes after three weeks at sea, is a genuine spectacle, and the bars and restaurants around the marina hum with the atmosphere.
The run-up to Christmas brings parang, the island's Spanish-Caribbean-rooted seasonal music, to churches, markets, and street corners around Castries. Homes and the streets near the Cathedral of the Immaculate Conception are decorated, the Central Market stocks black cake and sorrel drink, and there's a warmth to the season that feels communal rather than commercial. Sunday mass at the cathedral during Advent is a moving experience even for non-religious visitors.
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Top-rated things to do in Castries this December
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