St Barts Weather in March - Climate, Sea, Wind & Travel Conditions
March marks the end of the high season in Saint Barthelemy, offering an excellent balance between ideal weather conditions and gradually declining tourist crowds. The temperatures remain perfect between 23°C (73°F) and 29°C (84°F), with the sea still warm at 26°C (79°F) and trade winds still present but slightly gentler than in January-February.
Crowds decrease from mid-March, allowing you to enjoy more favorable rates while still benefiting from excellent weather conditions. March hosts the St. Barth Music Festival and sees the last major events of the high season. It's the ideal time for those seeking the best value for money with less crowded beaches and more accessible restaurants.
Weather overview in March in St Barts
March marks the end of the high season in Saint Barthelemy, still offering excellent weather conditions while seeing tourist traffic gradually decrease. Temperatures remain ideal, between 23°C (73°F) at night and 29°C (84°F) during the day, with trade winds still present but slightly gentler.
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Temperatures and wind conditions
Air temperatures
Temperatures remain perfect: warm but never stifling, with pleasant nights for sleeping with windows open.
Wind conditions
The wind gradually softens, offering a refreshing breeze without being too strong. Ideal for all activities.
Sea temperature and ocean conditions
Water temperature
26°C (79°F)
Perfect for swimming
Sea state
Very calm
Ideal conditions
Visibility
25-30 meters (80-100 ft)
Excellent for diving
Recommended water activities
Wind and sailing conditions
Wind
March trade winds gradually become gentler (15-25 km/h or 9-16 mph) compared to previous months. This gradual decrease makes exposed beaches more pleasant, especially on the east coast.
Sea
March offers one of the calmest seas of the year. Conditions are exceptional for swimming, snorkeling and sailing. Even usually rough beaches become accessible.
Notable weather phenomena in March
End of dry season
March remains very dry with only 6-7 rainy days. Showers are brief and localized, often in the evening. Sunshine reaches 8-9 hours per day, guaranteeing beautiful days.
Natural risks in March
Hurricane risk
No hurricane has ever hit Saint Barthelemy in March. Hurricane season doesn't start until June, so you are completely safe.
Sargassum risk
The first sargassum seaweed may start appearing late March, especially on east-facing beaches (Toiny, Marigot, Grand Fond). Quantities generally remain limited and are quickly cleaned up.
Saharan sand dust
Saharan sand haze typically doesn't reach St Barts until April-May. The sky remains clear with excellent visibility.
Visitor numbers, pollution and noise
Tourist traffic
March sees crowds gradually decrease. The beginning of the month remains lively with the last high season vacationers, then the atmosphere becomes quieter from mid-March. Rates drop and reservations become easier.
Advantages
- • Less crowded beaches late March
- • Lower rates
- • More authentic atmosphere
Good time for
- • Enjoying peace and quiet
- • Better prices
- • Excellent value for money
Road traffic
Traffic gradually decreases. Travel becomes more fluid, especially at the end of the month.
Construction work
Some construction work may resume late March after the high season, including renovations and maintenance.
Air pollution
Air pollution remains negligible. The constant trade winds guarantee pure and invigorating air throughout the day.
Practical tips for March in St Barts
Vegetation in transition
March marks the end of the dry period. Vegetation displays golden and ochre tones, but the first late-month rains begin to timidly green up the landscape. Flame trees and bougainvilleas offer their most beautiful blooms, creating splashes of vivid color.
Positives
- Spectacular blooming
- Pleasant hiking
- Few mosquitoes
Note
- • Still somewhat dry vegetation
- • Beginning to turn green
- • Colorful landscapes
Is March a good time to visit St Barts?
YES, March is an excellent month to visit St Barts
March offers the best of both worlds: you keep the exceptional weather conditions of the high season (dry weather, calm sea, ideal temperatures) while benefiting from declining crowds and more affordable rates, especially at the end of the month.
Ideal for:
- Those seeking peace AND good weather
- More reasonable budget than January-February
- Water sports enthusiasts (very calm sea)
- Travelers flexible with dates
To consider:
- First sargassum possible late March
- Early March still very crowded
- Some establishments may close late March
- Less lush vegetation than in summer
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