Ha Long Bay weather in April
Temperature, sea and sunshine in April: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in April
Good
Best time to visit: November – April
What is the weather like in Ha Long Bay in April?
In April, Ha Long Bay is hot: daytime highs average 27 °C, and even at night it stays warm at around 22 °C. The sea averages 22.9 °C – refreshing for a swim. Expect around 4 hours of sunshine a day. Rain is frequent, with about 12 rainy days and 73 mm in total. The air is often humid and muggy. All in all, April is a good month for a holiday in Ha Long Bay.
April compared
How the weather changes from March to May. Tap a month to open it.
More details for April
- Daylight
- 12 h 37 min05:34 – 18:10
- UV index
- 12 · extremeclear sky, noon (estimate)All months
- Muggy days
- 25 daysdew point 18 °C or moreAll months
- Wind
- 16 km/haverage daily peakAll months
- Cloud cover
- 71 %on averageAll months
- Hot days
- 5 days30 °C or moreAll months
- Time zone
- UTC+7Asia/Bangkok
How the score comes together
- Temperatureweight 50 %96 %
- Sunshineweight 20 %23 %
- Few rainy daysweight 30 %43 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Nature escape”.
What to pack in April
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Insect repellent
- Rain jacket or umbrella
Ha Long Bay in April: quick answers
Is Ha Long Bay hot in April?
Yes. In April, Ha Long Bay is hot: daytime highs average 27 °C and nights stay around 22 °C. On about 5 days the thermometer climbs to 30 °C or more.
Can you swim in Ha Long Bay in April?
Yes. In April the sea averages 22.9 °C – refreshing for a swim.
Does it rain much in Ha Long Bay in April?
Rain is frequent, with about 12 rainy days and 73 mm in total.
Ha Long Bay month by month
The whole year in Ha Long BayAll destinations: VietnamWhere to go in AprilSea temperature in April
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences