Weather in Guiana Perancis in Mei
Country-wide climate normals across 15 cities in Guiana Perancis.
How Hot Is Guiana Perancis in Mei?
Guiana Perancis sees consistently hot May weather — average highs of 28°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 Mei
Persistent cloud and grey skies define Guiana Perancis's May: about 0.6h of sun a day in Cayenne. Daylight is in short supply too, running from 6:15 am to 6:35 pm, and most regions of the country see similar overcast conditions. Bright stretches are uncommon and brief.
Does It Rain In Guiana Perancis In Mei?
Monsoon-like conditions dominate Guiana Perancis's May: Cayenne sees 632mm of rain across 30 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 Mei?
Guiana Perancis is enveloped in tropical-thick humidity through May: Cayenne averages 89%, 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 Guiana Perancis In Mei
Guiana Perancis's May has gentle wind — Cayenne averages 12 kph, and the country tracks similarly. Outdoor activity is comfortable, and afternoon thermals add a pleasant breeze in inland areas.
Cloud Cover In Guiana Perancis In Mei
Heavy overcast covers Guiana Perancis in May: 80% 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.