Weather in Phnom Penh in September
Phnom Penh, Cambodia averages a high of 30.9°C (87.6°F) and low of 24.6°C (76.3°F) in September, with 26 rain days and 8.6 hours of daily sunshine. Travel score: 64.5/100 (Good). The best time to visit Phnom Penh is February.
High
31°C88°F
Low
25°C76°F
🌧️
26
rain days
☀️
8.6
hrs/day sunshine
💧
84%
humidity
65— Good
September in Phnom Penh is hot and very rainy — pack an umbrella and enjoy indoor attractions too.
What are the average temperatures in Phnom Penh?
How much does it rain in Phnom Penh in September?
Phnom Penh receives an average of 254.3mm of rainfall across 26 rainy days in September. The annual total is 1445.4mm.
What should I pack for Phnom Penh in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light, breathable clothing
Hot weather with highs around 31°C
🧢
Sun hat or cap
Protection from intense sun
🧥
Waterproof jacket
Frequent rain expected (26 rainy days)
☔
Umbrella
Essential for the rainy season
👢
Waterproof shoes
Keep your feet dry in wet conditions
🧴
Sunscreen SPF 30+
9 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Traveling to Cambodia in September?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31