Weather Comparison
Side-by-side weather comparison for August
| Metric | Siem Reap | Bangkok | Better |
|---|---|---|---|
| Average HighHigher is warmer | 31°C (88°F) | 31°C (88°F) | Tie |
| Average LowHigher is milder | 25°C (77°F) | 25°C (77°F) | Tie |
| Rain DaysFewer is drier | 25 days | 24 days▲ | Bangkok |
| PrecipitationLess is drier | 173 mm | 147 mm▲ | Bangkok |
| Sunshine HoursMore is sunnier | 9h/day▲ | 8h/day | Siem Reap |
| HumidityLower is more comfortable | 82% | 82% | Tie |
| UV IndexLower is safer | 8 | 8 | Tie |
| Wind SpeedCalmer is better | 15 km/h▲ | 16 km/h | Siem Reap |
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.
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.
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%.
Highs of 31°C, lows of 25°C, 25 rain days
Highs of 31°C, lows of 25°C, 24 rain days
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.
The table below shows average high temperatures and rain days for every month. August is highlighted for quick reference.
| Month | Siem Reap | Bangkok | ||
|---|---|---|---|---|
| High | Rain | High | Rain | |
| Jan | 31°C | 2d | 31°C | 3d |
| Feb | 33°C | 3d | 32°C | 3d |
| Mar | 34°C | 9d | 34°C | 6d |
| Apr | 34°C | 15d | 35°C | 11d |
| May | 33°C | 22d | 33°C | 21d |
| Jun | 32°C | 21d | 32°C | 22d |
| Jul | 32°C | 22d | 32°C | 23d |
| Aug | 31°C | 25d | 31°C | 24d |
| Sep | 30°C | 26d | 31°C | 26d |
| Oct | 30°C | 23d | 30°C | 21d |
| Nov | 30°C | 9d | 31°C | 7d |
| Dec | 30°C | 3d | 31°C | 2d |
Siem Reap Weather in August
Full forecast, packing tips, and activities
Bangkok Weather in August
Full forecast, packing tips, and activities