Weather Comparison
Side-by-side weather comparison for August
| Metric | Bangkok | Siem Reap | 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 | 24 days▲ | 25 days | Bangkok |
| PrecipitationLess is drier | 147 mm▲ | 173 mm | Bangkok |
| Sunshine HoursMore is sunnier | 8h/day | 9h/day▲ | Siem Reap |
| HumidityLower is more comfortable | 82% | 82% | Tie |
| UV IndexLower is safer | 8 | 8 | Tie |
| Wind SpeedCalmer is better | 16 km/h | 15 km/h▲ | Siem Reap |
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.
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.
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%.
Highs of 31°C, lows of 25°C, 24 rain days
Highs of 31°C, lows of 25°C, 25 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 | Bangkok | Siem Reap | ||
|---|---|---|---|---|
| High | Rain | High | Rain | |
| Jan | 31°C | 3d | 31°C | 2d |
| Feb | 32°C | 3d | 33°C | 3d |
| Mar | 34°C | 6d | 34°C | 9d |
| Apr | 35°C | 11d | 34°C | 15d |
| May | 33°C | 21d | 33°C | 22d |
| Jun | 32°C | 22d | 32°C | 21d |
| Jul | 32°C | 23d | 32°C | 22d |
| Aug | 31°C | 24d | 31°C | 25d |
| Sep | 31°C | 26d | 30°C | 26d |
| Oct | 30°C | 21d | 30°C | 23d |
| Nov | 31°C | 7d | 30°C | 9d |
| Dec | 31°C | 2d | 30°C | 3d |
Bangkok Weather in August
Full forecast, packing tips, and activities
Siem Reap Weather in August
Full forecast, packing tips, and activities