Hoi An weather in May
Temperature, sea and sunshine in May: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in May
Fair
Best time to visit: February – April
What is the weather like in Hoi An in May?
In May, Hoi An is hot: daytime highs average 32 °C, and even at night it stays warm at around 26 °C. The sea averages 27.7 °C – lovely and warm for swimming. The sun shines for around 9 hours a day. It is the rainy season: rain falls on about 16 days, totalling 119 mm. On about 25 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, May is a so-so month for a holiday in Hoi An.
May compared
How the weather changes from April to June. Tap a month to open it.
More details for May
- Daylight
- 12 h 51 min05:17 – 18:08
- UV index
- 13 · extremeclear sky, noon (estimate)
- Muggy days
- 31 daysdew point 18 °C or more
- Wind
- 13 km/haverage daily peak
- Cloud cover
- 70 %on average
- Hot days
- 25 days30 °C or more
- Time zone
- UTC+7Asia/Ho_Chi_Minh
How the score comes together
- Temperatureweight 50 %35 %
- Sunshineweight 20 %93 %
- Few rainy daysweight 30 %12 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in May
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
- Rain jacket or umbrella
Hoi An in May: quick answers
Is Hoi An hot in May?
Yes. In May, Hoi An is hot: daytime highs average 32 °C and nights stay around 26 °C. On about 25 days the thermometer climbs to 30 °C or more.
Can you swim in Hoi An in May?
Yes. In May the sea averages 27.7 °C – lovely and warm for swimming.
Does it rain much in Hoi An in May?
It rains often – on about 16 days, adding up to 119 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)