Weather Comparison
Side-by-side weather comparison for July
| Metric | Hanoi | Vientiane | Better |
|---|---|---|---|
| Average HighHigher is warmer | 32°C (90°F)▲ | 30°C (86°F) | Hanoi |
| Average LowHigher is milder | 26°C (79°F)▲ | 24°C (75°F) | Hanoi |
| Rain DaysFewer is drier | 21 days▲ | 28 days | Hanoi |
| PrecipitationLess is drier | 267 mm▲ | 377 mm | Hanoi |
| Sunshine HoursMore is sunnier | 8h/day▲ | 7h/day | Hanoi |
| HumidityLower is more comfortable | 78% | 78% | Tie |
| UV IndexLower is safer | 9 | 9 | Tie |
| Wind SpeedCalmer is better | 12 km/h | 10 km/h▲ | Vientiane |
Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Hanoi edges ahead as the better destination in July. Hanoi offers 8 hours of daily sunshine with only 21 rain days, while Vientiane sees 7 sunshine hours and 28 rain days.
Hanoi can feel quite hot at 32°C, so plan for heat. Vientiane runs hot at 30°C.
For travelers who prioritize dry weather, Hanoi is the stronger choice in July. Hanoi receives 1 more hour of sunshine per day, which matters for sightseeing and outdoor activities.
Hanoi reaches an average high of 32°C (90°F) and drops to 26°C (79°F) at night during July. The daily temperature range is 6°C, meaning relatively stable temperatures from day to night.
Vientiane averages 30°C (86°F) for the high and 24°C (75°F) for the low, with a daily range of 6°C. The 2°C difference is noticeable but not dramatic.
Both cities are in the Northern Hemisphere, so they share the same seasonal pattern in July.
Hanoi receives approximately 267 mm of rainfall across 21 rain days during July. Rain is frequent, so waterproof gear is essential.
Vientiane sees 377 mm over 28 rain days. That makes Hanoi the drier option by 7 rain days and 110 mm of total precipitation.
Both cities share similar humidity levels at 78%.
Highs of 32°C, lows of 26°C, 21 rain days
Highs of 30°C, lows of 24°C, 28 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 July.
The table below shows average high temperatures and rain days for every month. July is highlighted for quick reference.
| Month | Hanoi | Vientiane | ||
|---|---|---|---|---|
| High | Rain | High | Rain | |
| Jan | 20°C | 8d | 27°C | 2d |
| Feb | 22°C | 8d | 30°C | 2d |
| Mar | 25°C | 11d | 32°C | 6d |
| Apr | 29°C | 11d | 34°C | 11d |
| May | 31°C | 17d | 32°C | 23d |
| Jun | 33°C | 19d | 30°C | 26d |
| Jul | 32°C | 21d | 30°C | 28d |
| Aug | 31°C | 23d | 30°C | 28d |
| Sep | 30°C | 19d | 30°C | 24d |
| Oct | 28°C | 12d | 29°C | 11d |
| Nov | 25°C | 7d | 29°C | 3d |
| Dec | 21°C | 7d | 27°C | 1d |
Hanoi Weather in July
Full forecast, packing tips, and activities
Vientiane Weather in July
Full forecast, packing tips, and activities