Haikou weather in March
In March, Haikou has an average high of 25 °C77 °F and an average low of 20 °C67 °F, with about 48 mm1.9 in of precipitation. It is the 9th warmest month of the year and ranks 10th for precipitation.
How March compares with other months
Compared with February, March is 2.4 °C4.3 °F warmer on average and wetter by 20 mm0.8 in. Compared with April, March is 2.9 °C5.2 °F cooler on average and drier by 41 mm1.6 in. Daylight lasts about 12.0 hours around the middle of the month. Average relative humidity is 84% and the average cloud amount 68%.
Is March a good time to visit Haikou?
Yes — March is one of the most comfortable months to visit Haikou by our comfort score, which favours average highs of 21–28 °C, lows above 5 °C, little rain and moderate humidity.
What to wear in March
For Haikou in March, pack light summer clothes such as T-shirts, shorts or light dresses.
March in nearby places
| Place | High °C°F | Low °C°F | Precip. mmin |
|---|---|---|---|
| Haikou | 2577 | 2067 | 481.9 |
| Xiuying | 2680 | 1967 | 421.7 |
| Wenchang | 2679 | 2067 | 552.2 |
| Qionghai | 2578 | 2170 | 562.2 |
| Nada | 3086 | 1864 | 441.7 |
| Zhanjiang | 2373 | 1967 | 512.0 |
| Wanning | 2578 | 2170 | 562.2 |
| Wuzhishan | 3187 | 1762 | 431.7 |
| Lianjiang | 2780 | 1762 | 562.2 |
Nearby places that are more than 1 °C1.8 °F warmer in March: Nada and Wuzhishan; cooler: Zhanjiang.
Other months in Haikou
- January21 °C70 °F / 17 °C62 °F
- February23 °C73 °F / 17 °C63 °F
- March25 °C77 °F / 20 °C67 °F
- April28 °C83 °F / 23 °C73 °F
- May30 °C86 °F / 25 °C77 °F
- June30 °C87 °F / 27 °C80 °F
- July30 °C87 °F / 26 °C80 °F
- August30 °C86 °F / 26 °C80 °F
- September29 °C85 °F / 26 °C79 °F
- October28 °C82 °F / 24 °C76 °F
- November25 °C77 °F / 22 °C71 °F
- December22 °C71 °F / 18 °C65 °F
Frequently asked questions
How warm is Haikou in March?
In March the average high in Haikou is 25 °C (77 °F) and the average low is 20 °C (67 °F).
Does it rain a lot in Haikou in March?
On average about 48 mm (1.9 in) of precipitation falls in March; it ranks 10th of the 12 months.
Is March the warmest month in Haikou?
No. The warmest month in Haikou is June, with an average high of 30 °C (87 °F). The coldest month is January, with an average low of 17 °C (62 °F).
How long is the day in Haikou in March?
In the middle of March the day in Haikou lasts about 12.0 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Haikou in March?
The average relative humidity in March is about 84%. Combined with warm days, it can feel muggy.
How cloudy is Haikou in March?
On average about 68% of the sky is covered by cloud in March. This is the mean cloud amount from satellite data, not the number of sunny days.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.