Weather in Hạ Long in September
Hạ Long, Vietnam averages a high of 29.6°C (85.3°F) and low of 24.9°C (76.8°F) in September, with 20 rain days and 8.8 hours of daily sunshine. Travel score: 65.8/100 (Good). The best time to visit Hạ Long is November.
High
30°C85°F
Low
25°C77°F
🌧️
20
rain days
☀️
8.8
hrs/day sunshine
💧
84%
humidity
66— Good
September in Hạ Long is hot and rainy — pack an umbrella and enjoy indoor attractions too.
What are the average temperatures in Hạ Long?
How much does it rain in Hạ Long in September?
Hạ Long receives an average of 252.7mm of rainfall across 20 rainy days in September. The annual total is 1731.4mm.
What should I pack for Hạ Long in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 30°C
🧥
Waterproof jacket
Frequent rain expected (20 rainy days)
☔
Umbrella
Essential for the rainy season
👢
Waterproof shoes
Keep your feet dry in wet conditions
🧴
Sunscreen SPF 30+
9 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Traveling to Vietnam in September?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31