Weather in Guiana Perancis in Disember
Country-wide climate normals across 15 cities in Guiana Perancis.
How Hot Is Guiana Perancis in Disember?
Guiana Perancis sees consistently hot December weather — average highs of 29°C, average lows of 23°C, with minimal regional differences. Whether you're in Cayenne or one of the coastal cities, conditions feel broadly the same: hot, generally clear, with little night-time relief.
Sunshine in Guiana Perancis in Disember
Guiana Perancis sees limited sun in December: just 0.6h a day in Cayenne, with heavy cloud cover common across most regions. Daylight runs from 6:30 am to 6:20 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 Guiana Perancis In Disember?
Monsoon-like conditions dominate Guiana Perancis's December: Cayenne sees 366mm of rain across 28 days, similar nationwide. Heavy showers fall almost daily, often in dramatic afternoon downpours. Sunshine is brief between storms, and humidity stays high throughout the month.
Is Guiana Perancis Humid In Disember?
Saturated air defines Guiana Perancis's December: humidity at 87% 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 Guiana Perancis In Disember
Light breezes are typical across Guiana Perancis in December: 12 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 Guiana Perancis In Disember
Guiana Perancis's December is dominated by overcast skies: Cayenne averages 80% cloud cover, with similar grey persistence across the country. Days feel dim and soft-lit, with little break in the cloud deck.