Weather Comparison
Phnom Penh vs Nha Trang
Side-by-side weather comparison for September
September Weather: Phnom Penh vs Nha Trang
| Metric | Phnom Penh | Nha Trang | Better |
|---|---|---|---|
| Average HighHigher is warmer | 31°C (88°F)▲ | 30°C (86°F) | Phnom Penh |
| Average LowHigher is milder | 24°C (75°F) | 25°C (77°F)▲ | Nha Trang |
| Rain DaysFewer is drier | 27 days | 26 days▲ | Nha Trang |
| PrecipitationLess is drier | 251 mm▲ | 293 mm | Phnom Penh |
| Sunshine HoursMore is sunnier | 9h/day | 9h/day | Tie |
| HumidityLower is more comfortable | 82% | 82% | Tie |
| UV IndexLower is safer | 6 | 6 | Tie |
| Wind SpeedCalmer is better | 13 km/h | 7 km/h▲ | Nha Trang |
Which City is Better in September?
Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Nha Trang edges ahead as the better destination in September. Nha Trang offers 9 hours of daily sunshine with only 26 rain days, while Phnom Penh sees 9 sunshine hours and 27 rain days.
Phnom Penh can feel quite hot at 31°C, so plan for heat. Nha Trang runs hot at 30°C.
For travelers who prioritize dry weather, Nha Trang is the stronger choice in September.
Temperature Comparison in September
Phnom Penh reaches an average high of 31°C (88°F) and drops to 24°C (75°F) at night during September. The daily temperature range is 7°C, meaning relatively stable temperatures from day to night.
Nha Trang averages 30°C (86°F) for the high and 25°C (77°F) for the low, with a daily range of 5°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.
Rainfall Comparison in September
Phnom Penh receives approximately 251 mm of rainfall across 27 rain days during September. Rain is frequent, so waterproof gear is essential.
Nha Trang sees 293 mm over 26 rain days. That makes Nha Trang the drier option by 1 rain day and 42 mm of total precipitation.
Both cities share similar humidity levels at 82%.
What to Pack: Phnom Penh vs Nha Trang
Packing for Phnom Penh in September
Highs of 31°C, lows of 24°C, 27 rain days
- ✓lightweight breathable clothing
- ✓sunscreen SPF 50+
- ✓sunglasses
- ✓a wide-brimmed hat
- ✓waterproof jacket
- ✓compact umbrella
- ✓waterproof shoes
- ✓moisture-wicking fabrics
Packing for Nha Trang in September
Highs of 30°C, lows of 25°C, 26 rain days
- ✓lightweight breathable clothing
- ✓sunscreen SPF 50+
- ✓sunglasses
- ✓a wide-brimmed hat
- ✓waterproof jacket
- ✓compact umbrella
- ✓waterproof shoes
- ✓moisture-wicking fabrics
Pack for both: lightweight breathable clothing, sunscreen SPF 50+, sunglasses, a wide-brimmed hat, waterproof jacket, compact umbrella, waterproof shoes, moisture-wicking fabrics. These items are useful in either destination during September.
Year-Round Comparison: Phnom Penh vs Nha Trang
The table below shows average high temperatures and rain days for every month of the year, helping you find the best time to visit either city.September is highlighted for quick reference.
| Month | Phnom Penh | Nha Trang | ||
|---|---|---|---|---|
| High | Rain | High | Rain | |
| Jan | 32°C | 3d | 26°C | 10d |
| Feb | 33°C | 2d | 27°C | 6d |
| Mar | 35°C | 6d | 29°C | 9d |
| Apr | 35°C | 14d | 31°C | 12d |
| May | 34°C | 23d | 32°C | 23d |
| Jun | 32°C | 24d | 32°C | 24d |
| Jul | 32°C | 25d | 32°C | 24d |
| Aug | 32°C | 25d | 32°C | 24d |
| Sep | 31°C | 27d | 30°C | 26d |
| Oct | 30°C | 25d | 28°C | 26d |
| Nov | 30°C | 11d | 27°C | 21d |
| Dec | 31°C | 5d | 26°C | 17d |
Phnom Penh Weather in September
Full forecast, packing tips, and activities
Nha Trang Weather in September
Full forecast, packing tips, and activities