Hoi An weather in August
Temperature, sea and sunshine in August: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in August
Poor
Best time to visit: February – April
What is the weather like in Hoi An in August?
In August, Hoi An is hot: daytime highs average 33 °C, and even at night it stays warm at around 27 °C. The sea averages 29.8 °C – almost as warm as a bath. The sun shines for around 7 hours a day. It is the rainy season: rain falls on about 19 days, totalling 147 mm. On about 28 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, August is not an ideal month for a holiday in Hoi An.
August compared
How the weather changes from July to September. Tap a month to open it.
| JulyJul | AugustAug | SeptemberSep | |
|---|---|---|---|
| Score | 29 | 29 | 40 |
| Day | 33° | 33° | 30° |
| Night | 27° | 27° | 26° |
| Sea | 30° | 30° | 29° |
| Sun | 8 h | 7 h | 6 h |
| Rain days | 17 | 19 | 23 |
More details for August
- Daylight
- 12 h 40 min05:31 – 18:12
- UV index
- 13 · extremeclear sky, noon (estimate)
- Muggy days
- 31 daysdew point 18 °C or more
- Wind
- 12 km/haverage daily peak
- Cloud cover
- 80 %on average
- Hot days
- 28 days30 °C or more
- Time zone
- UTC+7Asia/Ho_Chi_Minh
How the score comes together
- Temperatureweight 50 %30 %
- Sunshineweight 20 %70 %
- Few rainy daysweight 30 %0 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in August
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
- Rain jacket or umbrella
Hoi An in August: quick answers
Is Hoi An hot in August?
Yes. In August, Hoi An is hot: daytime highs average 33 °C and nights stay around 27 °C. On about 28 days the thermometer climbs to 30 °C or more.
Can you swim in Hoi An in August?
Yes. In August the sea averages 29.8 °C – almost as warm as a bath.
Does it rain much in Hoi An in August?
It rains often – on about 19 days, adding up to 147 mm.
Hoi An month by month
The whole year in Hoi AnAll destinations: Vietnam
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, GeoNames (CC BY 4.0)