Weather in Franska Guyana in september
Country-wide climate normals across 15 cities in Franska Guyana.
How Hot Is Franska Guyana in september?
Uniform heat across Franska Guyana's September: averages climb to 32°C nationally with overnight lows of 24°C, narrow spread from coast to interior. The hottest cities like Grand-Santi register similar readings to the coolest, so plan for consistently hot weather across the country.
Sunshine in Franska Guyana in september
Franska Guyana sees limited sun in September: just 1.1h a day in Cayenne, with heavy cloud cover common across most regions. Daylight runs from 6:20 am to 6:30 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 Franska Guyana In september?
Franska Guyana sees moderate rainfall in September — Cayenne averages 97mm across 14 days, with notable regional variation. Coastal cities often see more rain than the inland average, while drier regions see less. The country's September weather mixes sunny stretches with regular shower spells.
Is Franska Guyana Humid In september?
Saturated air defines Franska Guyana's September: humidity at 77% in Cayenne, 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 Franska Guyana In september
Light breezes are typical across Franska Guyana in September: 13 kph in Cayenne, with similar gentle wind conditions in most regions. The air moves enough to keep things fresh on warm days but not enough to be disruptive. Coastal cities may see slightly more.
Cloud Cover In Franska Guyana In september
Heavy overcast covers Franska Guyana in September: 79% cloud cover in Cayenne, with similar grey conditions in most regions. Direct sun is rare, and the pattern is persistent across the country. Coastal and northern regions feel especially heavy.