January Weather in St Barts: What to Expect

January is one of the best months to visit St Barts. After the holiday rush subsides, the island settles into a rhythm of perfect weather, comfortable temperatures, and a vibrant yet relaxed atmosphere. Here's everything you need to know about what January has in store.

Temperature and Sunshine

January temperatures hover around 25-28°C (77-82°F) during the day, dropping to a pleasant 22-24°C (72-75°F) at night. This is the Caribbean's dry season, so you'll enjoy 8-9 hours of sunshine daily with clear blue skies.

The humidity stays comfortable at around 70-75%, much lower than the sticky summer months. Combined with the trade winds, January feels refreshingly pleasant rather than oppressively hot.

Trade Winds and Sea Conditions

January brings steady northeast trade winds averaging 15-25 km/h. These breezes are a blessing—they keep temperatures comfortable and mosquitoes at bay. However, they do affect beach choice.

Live trade wind conditions →

Rainfall in January

January is part of the dry season, with only 60-80mm of rainfall spread across 8-10 days. When rain does come, it's typically a brief afternoon shower that clears within 20-30 minutes, often followed by a rainbow.

Unlike summer storms, January showers rarely disrupt beach plans. Simply take cover at a beach bar, enjoy a drink, and return to your lounger once the sun reappears.

What to Pack for January

January's weather calls for lightweight layers:

• Light cotton clothing — Breathable fabrics for daytime
• Light sweater or wrap — Evenings can feel cool with the breeze
• Reef-safe sunscreen — The sun is strong despite comfortable temperatures
• Wind-resistant cover-up — For breezy beach days

January Events

The island remains lively through January with post-holiday visitors enjoying extended stays. The famous St Barth Music Festival typically takes place in mid-January, bringing classical performances to the island.