St Barts Weather in December
December in St Barts marks the official entry into the high season with the massive influx of tourists for the year-end holidays. Weather conditions are excellent: 23-29°C, sea at 27°C, constant trade winds and the famous "Christmas winds" bringing freshness and clear skies.
Why come in December? To experience the magic of Caribbean holidays in an exceptional setting. The island comes alive with exclusive events, luxury yachts and a unique festive atmosphere. Very early booking essential (6-12 months) as accommodations and villas fill up quickly. High season rates apply.
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Weather Overview - December
December is THE iconic month for St Barts with the highly anticipated start of high season. Temperatures are perfect between 22°C and 29°C, while the sea remains pleasant at 27°C.
Precipitation is low (only about 8 days), with maximum sunshine. Humidity is at its lowest (70-75%), creating exceptional day and night climate comfort. Trade winds blow strongly, sometimes gusty during the "Christmas winds".
December is synonymous with celebration in St Barts: sumptuous receptions, regattas, luxury yachts, celebrities, and glamorous atmosphere. It's the most festive and lively month of the year, culminating with the legendary New Year's Eve. Booking essential several months in advance.
Notable Weather Phenomena in December
Christmas Winds
A characteristic phenomenon of December: the "Christmas Winds". These particularly sustained trade winds (25-35 km/h with gusts up to 50 km/h) generally blow around Christmas. They bring freshness and choppy seas, creating perfect conditions for sailing sports but rougher seas on the East coast.
Start of High Season
December officially launches the tourist high season. The island gradually comes alive, culminating the last week with the massive arrival of visitors for the holidays. Days are radiant with an intense blue sky, perfect temperatures and a unique festive atmosphere. Restaurants unveil their special menus, events multiply.
Temperatures and Wind in December
Temperatures
- •Minimum: 22-23°C (cool and pleasant nights)
- •Maximum: 28-29°C (perfect days)
- •Feels like: 28-30°C (ideal comfort)
- •Humidity: 70-75% (dry and pleasant air)
Wind
- •Trade winds: Sustained and regular (25-30 km/h)
- •Direction: East-Northeast dominant
- •Gusts: Frequent during Christmas winds (40-50 km/h)
- •Sea: Choppy East coast, calm West coast
Sea Temperature and Conditions
The sea cools slightly in December to 27°C, but remains very pleasant for swimming. It's a perfect temperature: warm enough to enjoy the water at length, but cool enough to be invigorating.
Marine Conditions
- • Crystal-clear and refreshing water
- • Maximum visibility (30m+)
- • Noticeable swell on East coast (1.5-2m)
- • West coast more sheltered and calm
Water Activities
- • Kitesurfing/windsurfing excellent conditions
- • Spectacular diving
- • Optimal navigation (regattas)
- • Snorkeling prefer West coast
Rainfall and Humidity
December is one of the driest months of the year. The rare rains are short, localized and generally at night. Sunny days dominate very largely with a deep blue characteristic sky.
Humidity is at its lowest of the year thanks to constant trade winds. The air is dry and invigorating, nights are cool and comfortable. Optimal climate conditions.
Natural Risks in December
Hurricane Risk - NON-EXISTENT
No hurricane risk in December. The season officially ended on November 30. Atmospheric conditions are totally unfavorable to tropical system development. Travel with complete peace of mind.
Maximum Safety:
- • Zero major weather risk
- • Stable and predictable conditions
- • Perfect weather for outdoor events
- • Only consideration: Christmas winds (choppy sea)
Sargassum Seaweed - Non-existent Risk
No sargassum in December. Currents and sustained trade winds prevent any accumulation. All beaches are immaculate and perfect for swimming and lounging.
Saharan Dust Haze - Non-existent
No Saharan dust haze in December. The sky is a deep brilliant blue. Perfect visibility, pure and crystalline air. Sunsets are spectacular with vivid colors. Ideal photography conditions.
Vegetation Status
Vegetation transitioning to dry season. December sees landscapes beginning to dry slightly after autumn rains. Hills take on more golden hues, creating a magnificent contrast with the intense blue of sky and sea.
Positive Points
- • Contrasted and photogenic landscapes
- • Brilliant bougainvillea blooms
- • Gardens well-maintained for high season
- • Beautiful cacti and succulents
Points of Attention
- • Mosquitoes almost non-existent (dry air)
- • No insect repellent needed
- • Comfortable hiking
- • Sunscreen essential (strong UV)
Crowds and Disturbances
Tourist Attendance
Very high attendance. December is the start of high season with a major peak for the holidays. The last week (Christmas-New Year) sees the island at maximum capacity. Booking essential 6-12 months in advance. Rates at their highest of the year.
Road Traffic
Heavy traffic, especially in Gustavia, St-Jean and on the Lurin road. Daily traffic jams in late afternoon. Parking difficult everywhere. Prefer scooters/quads or book car rental well in advance.
Atmosphere and Entertainment
Maximum festive atmosphere. December transforms St Barts into a global glamorous destination. Daily events, private parties, sumptuous yachts, fully-booked starred restaurants, celebrities. New Year's Eve in St Barts is legendary.
- • Live music in all restaurants
- • Regattas and nautical events
- • Private parties and charity galas
- • Spectacular New Year's fireworks
Air Quality
Excellent air quality. Despite increased traffic, constant trade winds continuously renew the air. No notable air pollution. Air remains pure and healthy. However, beware of noise disturbances in lively areas (Gustavia, St-Jean) with music from restaurants and bars.
Our Final Recommendation
December: EXCELLENT but VERY HIGH DEMAND - Early booking essential!
December is THE iconic month for St Barts, the one that built its global reputation. Weather is practically perfect, festive atmosphere unique, and experience unforgettable. This is when the island reveals all its magic and glamour.
Who should choose December? Those seeking THE ultimate St Barts experience, who want to spend year-end holidays in an exceptional setting, nightlife and entertainment lovers, those who like to see and be seen. Also ideal for a prestigious honeymoon.
Strengths: Near-perfect weather (sun, trade winds), pleasant sea (27°C), unique festive atmosphere, exclusive events, all establishments open and at their peak, no weather risk, excellent nautical conditions.
Points to consider: Maximum rates (2-3x more expensive than low season), 6-12 months minimum advance booking essential, significant crowds (especially last week), difficult traffic, constant noise and entertainment (not suited for absolute quiet).
Budget guide: Expect 800-1500 EUR/night for decent accommodation, minimum 3000-5000 EUR/night for a luxury villa. Restaurant meal 150-300 EUR/person. Car rental 150-200 EUR/day. One of the most expensive months in the world.
If you can afford it and book in time, December in St Barts is a magical and unforgettable experience. New Year's Eve on the island is legendary for a reason!
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