Weather in Сен-Бартелеми in сентябрь
Country-wide climate normals across 13 cities in Сен-Бартелеми.
How Hot Is Сен-Бартелеми in сентябрь?
Сен-Бартелеми sees consistently hot September weather — average highs of 29°C, average lows of 27°C, with minimal regional differences. Whether you're in Gustavia or one of the coastal cities, conditions feel broadly the same: hot, generally clear, with little night-time relief.
Sunshine in Сен-Бартелеми in сентябрь
Сен-Бартелеми 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 Сен-Бартелеми In сентябрь?
Heavy rain shapes Сен-Бартелеми's September: Gustavia averages 140mm across 17 days, and most regions of the country see similar persistent wet conditions. Long sunny stretches are rare. Expect rain on roughly two out of every three days.
Is Сен-Бартелеми Humid In сентябрь?
Сен-Бартелеми is enveloped in tropical-thick humidity through September: Gustavia averages 76%, and most of the country tracks similarly. The constant moisture makes warm temperatures feel substantially hotter, and even nights bring limited cooling. Light cotton clothing is essential.
Wind In Сен-Бартелеми In сентябрь
Persistent breeze shapes Сен-Бартелеми's September: 27 kph in Gustavia, with consistent wind across the country. The conditions are ideal for sailing and other wind sports, but can be disruptive for fine outdoor work.
Cloud Cover In Сен-Бартелеми In сентябрь
Сен-Бартелеми sees mostly cloudy weather through September: Gustavia averages 73% cloud cover, and the pattern repeats across the country. Bright sun is uncommon; expect a grey, soft-lit feel to most days.