Saint Vincent and the Grenadines in December: Weather, Crowds & What to Expect

Kingstown & Leeward Coast (southwest St. Vincent)

November’s heavy-rain tendency tapers off late in the month and you begin to see more stable weather as the island drifts toward the dry season; evenings become noticeably less humid. Boat services start to normalize and leafier coastal trails dry out, making walks to places like Fort Duvernette more appealing. Travelers should still be prepared for isolated storms early in the month and keep flexible plans.

Windward Highlands & La Soufrière (interior highlands)

December sees the highlands drying further as the trade winds reassert themselves, and crisp, clear mornings return to offer dramatic views of the island and volcano. Daytime warmth varies sharply with altitude: it’s pleasant in the valleys but still cool near summit levels, so a fleece for early starts is handy. This is when guided hikes resume in earnest and conditions become more reliable for climbing La Soufrière.

Northern Grenadines (Bequia, Admiralty Bay & surroundings)

December brings back steadier trade winds and clearer weather that make Bequia bustling again with yacht traffic and holiday visitors; daytime highs are warm and evenings pleasant. Inter-island ferries and charters regain full schedules, and snorkel trips to nearby reefs are easy to arrange on calm days. Book early for holidays and expect livelier harbors and higher prices.

Central Grenadines (Mustique, Canouan, Mayreau, Tobago Cays)

December restores the drier trade-wind pattern and high season energy: Mustique and Canouan fill up, and the Tobago Cays again offer clear lagoon swimming and steady anchoring. Holiday crowds grow but the consistently calm sea and excellent visibility make it the most reliable month for coral viewing. Book charters early and carry sun protection - days are hot and water temperatures remain very comfortable.

Southern Grenadines & Union Island (Clifton, Tobago Cays approaches)

December restores stable trade winds and clearer seas, making Union Island and the southern Grenadines popular again for holiday travelers and charter crews; snorkeling and diving return to reliable clarity. Moorings in the Tobago Cays fill up on calm days, so reserve space or head out early in the morning. Pack sunscreen, reef boots and reservation confirmations - demand climbs quickly into the high season.