Ha Long Bay weather in March
Temperature, sea and sunshine in March: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in March
Good
Best time to visit: November – April
What is the weather like in Ha Long Bay in March?
In March, Ha Long Bay is warm: daytime highs average 24 °C, and nights cool down to about 19 °C. The sea averages 20.1 °C – refreshing for a swim. The sun is scarce, with only about 3 hours a day. Rain falls on about 9 days, adding up to 42 mm. The air is often humid and muggy. All in all, March is a good month for a holiday in Ha Long Bay.
March compared
How the weather changes from February to April. Tap a month to open it.
| FebruaryFeb | MarchMar | AprilApr | |
|---|---|---|---|
| Score | 77 | 70 | 65 |
| Day | 21° | 24° | 27° |
| Night | 16° | 19° | 22° |
| Sea | 19° | 20° | 23° |
| Sun | 3 h | 3 h | 4 h |
| Rain days | 6 | 9 | 12 |
More details for March
- Daylight
- 12 h 0 min06:02 – 18:01
- UV index
- 10 · very highclear sky, noon (estimate)All months
- Muggy days
- 18 daysdew point 18 °C or moreAll months
- Wind
- 15 km/haverage daily peakAll months
- Cloud cover
- 76 %on averageAll months
- Hot days
- 1 day30 °C or moreAll months
- Time zone
- UTC+7Asia/Bangkok
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %0 %
- Few rainy daysweight 30 %65 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Nature escape”.
What to pack in March
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Insect repellent
- Rain jacket or umbrella
Ha Long Bay in March: quick answers
Is Ha Long Bay hot in March?
Warm rather than hot: in March, daytime highs in Ha Long Bay average 24 °C and nights cool to about 19 °C.
Can you swim in Ha Long Bay in March?
Yes. In March the sea averages 20.1 °C – refreshing for a swim.
Does it rain much in Ha Long Bay in March?
Rain falls on about 9 days, adding up to 42 mm.
Ha Long Bay month by month
The whole year in Ha Long BayAll destinations: VietnamWhere to go in MarchSea temperature in March
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