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Weather Comparison

Bangkok vs Siem Reap

Side-by-side weather comparison for August

Bangkok: 31°CSiem Reap: 31°C364 km apart

August Weather: Bangkok vs Siem Reap

MetricBangkokSiem ReapBetter
Average HighHigher is warmer31°C (88°F)31°C (88°F)Tie
Average LowHigher is milder25°C (77°F)25°C (77°F)Tie
Rain DaysFewer is drier24 days25 daysBangkok
PrecipitationLess is drier147 mm173 mmBangkok
Sunshine HoursMore is sunnier8h/day9h/daySiem Reap
HumidityLower is more comfortable82%82%Tie
UV IndexLower is safer88Tie
Wind SpeedCalmer is better16 km/h15 km/hSiem Reap

Which City is Better in August?

Bangkok and Siem Reap are closely matched in August. 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.

Bangkok can feel quite hot at 31°C, so plan for heat. Siem Reap runs hot at 31°C.

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

Temperature Comparison in August

Bangkok reaches an average high of 31°C (88°F) and drops to 25°C (77°F) at night during August. The daily temperature range is 6°C, meaning relatively stable temperatures from day to night.

Siem Reap averages 31°C (88°F) for the high and 25°C (77°F) for the low, with a daily range of 6°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 August.

Rainfall Comparison in August

Bangkok receives approximately 147 mm of rainfall across 24 rain days during August. Rain is frequent, so waterproof gear is essential.

Siem Reap sees 173 mm over 25 rain days. That makes Bangkok the drier option by 1 rain day and 26 mm of total precipitation.

Both cities share similar humidity levels at 82%.

What to Pack: Bangkok vs Siem Reap

Packing for Bangkok in August

Highs of 31°C, lows of 25°C, 24 rain days

  • lightweight breathable clothing
  • sunscreen SPF 50+
  • sunglasses
  • a wide-brimmed hat
  • waterproof jacket
  • compact umbrella
  • waterproof shoes
  • moisture-wicking fabrics

Packing for Siem Reap in August

Highs of 31°C, lows of 25°C, 25 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 August.

Year-Round Comparison: Bangkok vs Siem Reap

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.August is highlighted for quick reference.

MonthBangkokSiem Reap
HighRainHighRain
Jan31°C3d31°C2d
Feb32°C3d33°C3d
Mar34°C6d34°C9d
Apr35°C11d34°C15d
May33°C21d33°C22d
Jun32°C22d32°C21d
Jul32°C23d32°C22d
Aug31°C24d31°C25d
Sep31°C26d30°C26d
Oct30°C21d30°C23d
Nov31°C7d30°C9d
Dec31°C2d30°C3d
31°

Bangkok Weather in August

Full forecast, packing tips, and activities

31°

Siem Reap Weather in August

Full forecast, packing tips, and activities

Frequently Asked Questions

Is Bangkok warmer than Siem Reap in August?
Bangkok and Siem Reap have the same average high temperature of 31°C (88°F) in August. The average lows are 25°C and 25°C respectively.
Which city gets more rain in August, Bangkok or Siem Reap?
Siem Reap gets more rain in August with 25 rain days and 173 mm of precipitation. Bangkok is the drier option with 24 rain days.
Is it better to visit Bangkok or Siem Reap in August?
It depends on your preferences. Bangkok averages 31°C and 8 hours of daily sunshine with 24 rain days. Siem Reap averages 31°C with 9 sunshine hours and 25 rain days. If you prefer cooler conditions, choose Siem Reap. For drier weather, Bangkok is the better pick.
How far apart are Bangkok and Siem Reap?
Bangkok and Siem Reap are approximately 364 km (226 miles) apart. Bangkok is located in Thailand (Asia) while Siem Reap is in Cambodia (Asia).
What is the best month to visit Bangkok and Siem Reap?
For Bangkok, February tends to be the best month with 11 hours of daily sunshine and a high of 32°C. For Siem Reap, February is typically ideal with 11 sunshine hours and 33°C highs.

Compare Bangkok and Siem Reap 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.

Bangkok coordinates: 13.76°N, 100.50°E | Siem Reap coordinates: 13.37°N, 103.84°E