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Weather Comparison

Phu Quoc vs Phnom Penh

Side-by-side weather comparison for September

Phu Quoc: 28°CPhnom Penh: 31°C171 km apart

September Weather: Phu Quoc vs Phnom Penh

MetricPhu QuocPhnom PenhBetter
Average HighHigher is warmer28°C (82°F)31°C (88°F)Phnom Penh
Average LowHigher is milder25°C (77°F)24°C (75°F)Phu Quoc
Rain DaysFewer is drier27 days27 daysTie
PrecipitationLess is drier396 mm251 mmPhnom Penh
Sunshine HoursMore is sunnier8h/day9h/dayPhnom Penh
HumidityLower is more comfortable82%82%Tie
UV IndexLower is safer66Tie
Wind SpeedCalmer is better27 km/h13 km/hPhnom Penh

Which City is Better in September?

Phu Quoc and Phnom Penh are closely matched in September. Neither city has a clear advantage across all metrics. Your decision should come down to personal preference, cultural interests, and travel logistics rather than weather alone.

Phu Quoc sits in the comfortable travel range at 28°C. Phnom Penh runs hot at 31°C.

For travelers who prioritize dry weather, both cities are equally dry in September. Phnom Penh receives 1 more hour of sunshine per day, which matters for sightseeing and outdoor activities.

Temperature Comparison in September

Phu Quoc reaches an average high of 28°C (82°F) and drops to 25°C (77°F) at night during September. The daily temperature range is 3°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 3°C difference is noticeable but not dramatic.

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

Rainfall Comparison in September

Phu Quoc receives approximately 396 mm of rainfall across 27 rain days during September. Rain is frequent, so waterproof gear is essential.

Phnom Penh sees 251 mm over 27 rain days. Both cities are equally rainy this month.

Both cities share similar humidity levels at 82%.

What to Pack: Phu Quoc vs Phnom Penh

Packing for Phu Quoc in September

Highs of 28°C, lows of 25°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 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

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: Phu Quoc vs Phnom Penh

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.

MonthPhu QuocPhnom Penh
HighRainHighRain
Jan28°C9d32°C3d
Feb28°C8d33°C2d
Mar29°C14d35°C6d
Apr30°C20d35°C14d
May29°C27d34°C23d
Jun28°C27d32°C24d
Jul28°C28d32°C25d
Aug28°C28d32°C25d
Sep28°C27d31°C27d
Oct28°C27d30°C25d
Nov28°C16d30°C11d
Dec28°C9d31°C5d
28°

Phu Quoc Weather in September

Full forecast, packing tips, and activities

31°

Phnom Penh Weather in September

Full forecast, packing tips, and activities

Frequently Asked Questions

Is Phu Quoc warmer than Phnom Penh in September?
No. In September, Phnom Penh is warmer with an average high of 31°C (88°F) compared to Phu Quoc at 28°C (82°F), a difference of 3°C.
Which city gets more rain in September, Phu Quoc or Phnom Penh?
Both cities average 27 rain days in September with similar precipitation levels.
Is it better to visit Phu Quoc or Phnom Penh in September?
It depends on your preferences. Phu Quoc averages 28°C and 8 hours of daily sunshine with 27 rain days. Phnom Penh averages 31°C with 9 sunshine hours and 27 rain days. If you prefer cooler conditions, choose Phnom Penh. For fewer rain days, both are equal.
How far apart are Phu Quoc and Phnom Penh?
Phu Quoc and Phnom Penh are approximately 171 km (106 miles) apart. Phu Quoc is located in Vietnam (Asia) while Phnom Penh is in Cambodia (Asia).
What is the best month to visit Phu Quoc and Phnom Penh?
For Phu Quoc, February tends to be the best month with 11 hours of daily sunshine and a high of 28°C. For Phnom Penh, February is typically ideal with 11 sunshine hours and 33°C highs.

Compare Phu Quoc and Phnom Penh in Other Months

Climate data sourced from the Open-Meteo Historical Weather API, using ERA5 reanalysis data covering 30-year normals from 1991 to 2020. All temperatures shown in Celsius with Fahrenheit equivalents. Rain days count days with 1 mm or more of precipitation. Sunshine hours represent average daily values. This comparison is generated from long-term climate averages and individual trips may vary.

Phu Quoc coordinates: 10.29°N, 103.98°E | Phnom Penh coordinates: 11.54°N, 104.89°E