Weather in Guyane Française in septembre
Country-wide climate normals across 15 cities in Guyane Française.
How Hot Is Guyane Française in septembre?
Guyane Française bakes evenly in September — highs around 32°C are typical from Iracoubo all the way to Grand-Santi, with very little regional variation. Lows sit around 24°C even overnight, and the country's small geographic footprint means there are no significant climate pockets. Expect uniform heat day and night.
Sunshine in Guyane Française in septembre
Limited sunshine and short daylight define Guyane Française's September: Cayenne averages just 1.1h of direct sun, with the sun up between 6:20 am and 6:30 pm. The grey, overcast pattern is consistent across most of the country, with little regional variation in cloud cover.
Does It Rain In Guyane Française In septembre?
Moderate rainfall defines Guyane Française's September: Cayenne averages 97mm across 14 days. Some regions see meaningfully wetter weather, especially coastal or mountain-facing areas, while continental interiors tend toward the drier end of the spectrum.
Is Guyane Française Humid In septembre?
Guyane Française is enveloped in tropical-thick humidity through September: Cayenne averages 77%, 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 Guyane Française In septembre
Gentle steady winds define Guyane Française's September: Cayenne averages 13 kph, with conditions consistent across most regions. The breeze keeps warm days bearable without being a nuisance.
Cloud Cover In Guyane Française In septembre
Guyane Française's September is dominated by overcast skies: Cayenne averages 79% cloud cover, with similar grey persistence across the country. Days feel dim and soft-lit, with little break in the cloud deck.