Ho Chi Minh City vs Phnom Penh

Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Phnom Penh edges ahead as the better destination in September. Phnom Penh offers 9 hours of daily sunshine with only 27 rain days, while Ho Chi Minh City sees 8 sunshine hours and 29 rain days.

Ho Chi Minh City can feel quite hot at 30°C, so plan for heat. Phnom Penh runs hot at 31°C.

For travelers who prioritize dry weather, Phnom Penh is the stronger choice in September. Phnom Penh receives 1 more hour of sunshine per day, which matters for sightseeing and outdoor activities.

Ho Chi Minh City reaches an average high of 30°C (86°F) and drops to 24°C (75°F) at night during September. The daily temperature range is 6°C, meaning relatively stable temperatures from day to night.

Phnom Penh averages 31°C (88°F) for the high and 24°C (75°F) for the low, with a daily range of 7°C. The two cities feel quite similar in terms of temperature.

Both cities are in the Northern Hemisphere, so they share the same seasonal pattern in September.

Ho Chi Minh City receives approximately 306 mm of rainfall across 29 rain days during September. Rain is frequent, so waterproof gear is essential.

Phnom Penh sees 251 mm over 27 rain days. That makes Phnom Penh the drier option by 2 rain days and 55 mm of total precipitation.

Both cities share similar humidity levels at 82%.