Visit Sapa in Vietnam
Balancing on the edges of a rice field with endless views. A trek through the valley of Sapa is definitely a must for the bucket list.
An Hải in September averages 31°C (88°F) during the day and 26°C (79°F) at night. September is part of the rainy season, so frequent rainfall is typical.
If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit An Hải. Our weather planner can help you explore destinations with more pleasant weather conditions.
Pick a month to see the average temperature, rainfall and sunshine in An Hải - and find the best time to visit.
48-year average (1976-2025)
Based on our historical records, temperatures in An Hải typically stay consistent throughout September, with daily highs averaging around 31°C (88°F). Nights are warm, with lows around 25°C (77°F).
48-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Browse day-by-day weather records for An Hải spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Based on 32 years of weather observations (1993-2025), these are the most extreme conditions recorded in An Hải.
Find out more about the weather in Vietnam and which places have the best travel conditions in this month. See all of Vietnam in September →
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
Warm but pleasant conditions in An Hải in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. Bring sunglasses since you'll have some sunny periods throughout the month
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Humidity
See the full An Hải climate overview or explore weather in Vietnam.
Where to go in September - average daytime high across popular destinations.
Need travel inspiration? Check out our bucket list articles and be inspired.
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