Weather in Saint-Barthélemy in settembre
Country-wide climate normals across 13 cities in Saint-Barthélemy.
How Hot Is Saint-Barthélemy in settembre?
Uniform heat across Saint-Barthélemy's September: averages climb to 29°C nationally with overnight lows of 27°C, narrow spread from coast to interior. The hottest cities like Caribe Frances register similar readings to the coolest, so plan for consistently hot weather across the country.
Sunshine in Saint-Barthélemy in settembre
Saint-Barthélemy sees limited sun in September: just 1.8h a day in Gustavia, with heavy cloud cover common across most regions. Daylight runs from 6:00 am to 6:10 pm, but persistent grey skies and overcast stretches mean direct sunlight is genuinely scarce. Many days pass without any prolonged sunny spells.
Does It Rain In Saint-Barthélemy In settembre?
Wet conditions dominate Saint-Barthélemy in September — Gustavia sees 140mm of rain across 17 days, with rain a near-daily feature in most regions. Some areas see considerably more, particularly mountain-facing or windward coasts. Plan around frequent showers and pack reliable rainwear.
Is Saint-Barthélemy Humid In settembre?
Saturated air defines Saint-Barthélemy's September: humidity at 76% in Gustavia, with the country as a whole feeling muggy and oppressive. The air practically drips after rain, and even shaded outdoor areas feel warm and clammy. Plan indoor time during the most humid afternoon hours.
Wind In Saint-Barthélemy In settembre
Breezy conditions cover Saint-Barthélemy's September: Gustavia sits at 27 kph on average, with the country as a whole feeling windy through the day. Afternoon winds pick up across most cities, and coastal regions often run significantly higher.
Cloud Cover In Saint-Barthélemy In settembre
Cloudy skies dominate Saint-Barthélemy in September — 73% cover in Gustavia, with similar overcast conditions in most regions. Direct sun is patchy and broken; expect grey stretches between brief bright moments. Coastal areas may be heavier than inland.