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Weather Comparison

Siem Reap vs Bangkok

Side-by-side weather comparison for August

Siem Reap: 31°CBangkok: 31°C364 km apart

August Weather: Siem Reap vs Bangkok

MetricSiem ReapBangkokBetter
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 drier25 days24 daysBangkok
PrecipitationLess is drier173 mm147 mmBangkok
Sunshine HoursMore is sunnier9h/day8h/daySiem Reap
HumidityLower is more comfortable82%82%Tie
UV IndexLower is safer88Tie
Wind SpeedCalmer is better15 km/h16 km/hSiem Reap

Which City is Better in August?

Siem Reap and Bangkok 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.

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

Siem Reap 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.

Bangkok 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

Siem Reap receives approximately 173 mm of rainfall across 25 rain days during August. Rain is frequent, so waterproof gear is essential.

Bangkok sees 147 mm over 24 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: Siem Reap vs Bangkok

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

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

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: Siem Reap vs Bangkok

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.

MonthSiem ReapBangkok
HighRainHighRain
Jan31°C2d31°C3d
Feb33°C3d32°C3d
Mar34°C9d34°C6d
Apr34°C15d35°C11d
May33°C22d33°C21d
Jun32°C21d32°C22d
Jul32°C22d32°C23d
Aug31°C25d31°C24d
Sep30°C26d31°C26d
Oct30°C23d30°C21d
Nov30°C9d31°C7d
Dec30°C3d31°C2d
31°

Siem Reap Weather in August

Full forecast, packing tips, and activities

31°

Bangkok Weather in August

Full forecast, packing tips, and activities

Frequently Asked Questions

Is Siem Reap warmer than Bangkok in August?
Siem Reap and Bangkok 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, Siem Reap or Bangkok?
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 Siem Reap or Bangkok in August?
It depends on your preferences. Siem Reap averages 31°C and 9 hours of daily sunshine with 25 rain days. Bangkok averages 31°C with 8 sunshine hours and 24 rain days. If you prefer cooler conditions, choose Bangkok. For fewer rain days, Bangkok is the better pick.
How far apart are Siem Reap and Bangkok?
Siem Reap and Bangkok are approximately 364 km (226 miles) apart. Siem Reap is located in Cambodia (Asia) while Bangkok is in Thailand (Asia).
What is the best month to visit Siem Reap and Bangkok?
For Siem Reap, January tends to be the best month with 11 hours of daily sunshine and a high of 31°C. For Bangkok, January is typically ideal with 11 sunshine hours and 31°C highs.

Compare Siem Reap and Bangkok 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.

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