Haikou 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: October – April
What is the weather like in Haikou in March?
In March, Haikou is warm: daytime highs average 25 °C, and even at night it stays warm at around 21 °C. The sea averages 20.6 °C – refreshing for a swim. Expect around 4 hours of sunshine a day. Rain falls on about 8 days, adding up to 36 mm. The air is often humid and muggy. All in all, March is a good month for a holiday in Haikou.
March compared
How the weather changes from February to April. Tap a month to open it.
| FebruaryFeb | MarchMar | AprilApr | |
|---|---|---|---|
| Score | 77 | 76 | 65 |
| Day | 22° | 25° | 28° |
| Night | 18° | 21° | 23° |
| Sea | 19° | 21° | 23° |
| Sun | 3 h | 4 h | 5 h |
| Rain days | 6 | 8 | 11 |
More details for March
- Daylight
- 12 h 0 min06:48 – 18:48
- UV index
- 10 · very highclear sky, noon (estimate)All months
- Muggy days
- 24 daysdew point 18 °C or moreAll months
- Wind
- 23 km/haverage daily peakAll months
- Cloud cover
- 57 %on averageAll months
- Hot days
- 3 days30 °C or moreAll months
- Time zone
- UTC+8Asia/Shanghai
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %18 %
- Few rainy daysweight 30 %75 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in March
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Insect repellent
Haikou in March: quick answers
Is Haikou hot in March?
Warm rather than hot: in March, daytime highs in Haikou average 25 °C and nights cool to about 21 °C. On about 3 days the thermometer climbs to 30 °C or more.
Can you swim in Haikou in March?
Yes. In March the sea averages 20.6 °C – refreshing for a swim.
Does it rain much in Haikou in March?
Rain falls on about 8 days, adding up to 36 mm.
Haikou month by month
The whole year in HaikouAll destinations: ChinaWhere 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