Haikou weather in June
In June, Haikou has an average high of 30 °C87 °F and an average low of 27 °C80 °F, with about 205 mm8.1 in of precipitation. June is the warmest month of the year and ranks 5th for precipitation.
How June compares with other months
Compared with May, June is 0.8 °C1.4 °F warmer on average and wetter by 15 mm0.6 in. Compared with July, June is about the same temperature and drier by 31 mm1.2 in. Daylight lasts about 13.3 hours around the middle of the month. Average relative humidity is 87% and the average cloud amount 74%.
Is June a good time to visit Haikou?
June is not among the most comfortable months by our comfort score: it is hot (average high 30 °C87 °F), it is fairly wet (205 mm8.1 in) and it is humid (87%). The most comfortable months in Haikou are December–March.
What to wear in June
For Haikou in June, pack very light, breathable clothing, a sun hat and plenty of water and a good rain jacket or umbrella and quick-drying shoes.
June in nearby places
| Place | High °C°F | Low °C°F | Precip. mmin |
|---|---|---|---|
| Haikou | 3087 | 2780 | 2058.1 |
| Xiuying | 3188 | 2780 | 1977.8 |
| Wenchang | 3187 | 2679 | 1837.2 |
| Qionghai | 3086 | 2781 | 1777.0 |
| Nada | 3289 | 2576 | 1917.5 |
| Zhanjiang | 3086 | 2781 | 26710 |
| Wanning | 3086 | 2781 | 1777.0 |
| Wuzhishan | 3187 | 2474 | 1957.7 |
| Lianjiang | 3188 | 2578 | 25610 |
Nearby places that are more than 1 °C1.8 °F cooler: Wuzhishan.
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 June?
In June the average high in Haikou is 30 °C (87 °F) and the average low is 27 °C (80 °F).
Does it rain a lot in Haikou in June?
On average about 205 mm (8.1 in) of precipitation falls in June; it ranks 5th of the 12 months.
Is June the warmest month in Haikou?
Yes. June is the warmest month in Haikou. The coldest month is January, with an average low of 17 °C (62 °F).
How long is the day in Haikou in June?
In the middle of June the day in Haikou lasts about 13.3 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Haikou in June?
The average relative humidity in June is about 87%. Combined with warm days, it can feel muggy.
How cloudy is Haikou in June?
On average about 74% of the sky is covered by cloud in June. 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.