Weather Comparison
Side-by-side weather comparison for August
| Metric | Vientiane | Hanoi | Better |
|---|---|---|---|
| Average HighHigher is warmer | 31°C (88°F) | 31°C (88°F) | Tie |
| Average LowHigher is milder | 24°C (75°F) | 25°C (77°F)▲ | Hanoi |
| Rain DaysFewer is drier | 15 days▲ | 23 days | Vientiane |
| PrecipitationLess is drier | 175 mm▲ | 320 mm | Vientiane |
| Sunshine HoursMore is sunnier | 6h/day | 8h/day▲ | Hanoi |
| HumidityLower is more comfortable | 78% | 78% | Tie |
| UV IndexLower is safer | 9 | 9 | Tie |
| Wind SpeedCalmer is better | 15 km/h | 11 km/h▲ | Hanoi |
Vientiane and Hanoi 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.
Vientiane can feel quite hot at 31°C, so plan for heat. Hanoi runs hot at 31°C.
For travelers who prioritize dry weather, Vientiane is the stronger choice in August. Hanoi receives 2 more hours of sunshine per day, which matters for sightseeing and outdoor activities.
Vientiane reaches an average high of 31°C (88°F) and drops to 24°C (75°F) at night during August. The daily temperature range is 7°C, meaning relatively stable temperatures from day to night.
Hanoi 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.
Vientiane receives approximately 175 mm of rainfall across 15 rain days during August. Rain is frequent, so waterproof gear is essential.
Hanoi sees 320 mm over 23 rain days. That makes Vientiane the drier option by 8 rain days and 145 mm of total precipitation.
Both cities share similar humidity levels at 78%.
Highs of 31°C, lows of 24°C, 15 rain days
Highs of 31°C, lows of 25°C, 23 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 | Vientiane | Hanoi | ||
|---|---|---|---|---|
| High | Rain | High | Rain | |
| Jan | 28°C | 7d | 20°C | 8d |
| Feb | 29°C | 9d | 22°C | 8d |
| Mar | 30°C | 12d | 25°C | 11d |
| Apr | 31°C | 15d | 29°C | 11d |
| May | 32°C | 17d | 31°C | 17d |
| Jun | 32°C | 18d | 33°C | 19d |
| Jul | 32°C | 17d | 32°C | 21d |
| Aug | 31°C | 15d | 31°C | 23d |
| Sep | 30°C | 12d | 30°C | 19d |
| Oct | 29°C | 9d | 28°C | 12d |
| Nov | 28°C | 7d | 25°C | 7d |
| Dec | 28°C | 6d | 21°C | 7d |
Vientiane Weather in August
Full forecast, packing tips, and activities
Hanoi Weather in August
Full forecast, packing tips, and activities