Weather in Kemboja in September
Country-wide climate normals across 15 cities in Kemboja.
How Hot Is Kemboja in September?
Kemboja bakes evenly in September — highs around 31°C are typical from Koh Kong all the way to Prey Veng, with very little regional variation. Lows sit around 25°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 Kemboja in September
Dark, overcast days dominate Kemboja in September — Phnom Penh sees just 0.7h of sun a day, and the pattern is similar across most regions. Cloud cover is heavy and persistent, with even the brighter regions struggling to escape the gloom for long.
Does It Rain In Kemboja In September?
Heavy seasonal rains saturate Kemboja in September — Phnom Penh averages 392mm of rain across 28 days, with downpours an almost daily feature. The pattern is consistent across most regions, particularly along monsoon-affected coasts. Expect torrential afternoon storms followed by humid heat.
Is Kemboja Humid In September?
Kemboja is enveloped in tropical-thick humidity through September: Phnom Penh averages 79%, 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 Kemboja In September
Gentle steady winds define Kemboja's September: Phnom Penh averages 14 kph, with conditions consistent across most regions. The breeze keeps warm days bearable without being a nuisance.
Cloud Cover In Kemboja In September
Heavy overcast covers Kemboja in September: 80% cloud cover in Phnom Penh, 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.