Haikou weather in July
In July, Haikou has an average high of 30 °C87 °F and an average low of 26 °C80 °F, with about 236 mm9.3 in of precipitation. It is the 2nd warmest month of the year and ranks 4th for precipitation.
How July compares with other months
Compared with June, July is about the same temperature and wetter by 31 mm1.2 in. Compared with August, July is about the same temperature and drier by 77 mm3.0 in. Daylight lasts about 13.2 hours around the middle of the month. Average relative humidity is 87% and the average cloud amount 68%.
Is July a good time to visit Haikou?
July is not among the most comfortable months by our comfort score: it is hot (average high 30 °C87 °F), it is fairly wet (236 mm9.3 in) and it is humid (87%). The most comfortable months in Haikou are December–March.
What to wear in July
For Haikou in July, pack very light, breathable clothing, a sun hat and plenty of water and a good rain jacket or umbrella and quick-drying shoes.
July in nearby places
| Place | High °C°F | Low °C°F | Precip. mmin |
|---|---|---|---|
| Haikou | 3087 | 2680 | 2369.3 |
| Xiuying | 3187 | 2780 | 25310.0 |
| Wenchang | 3187 | 2678 | 2168.5 |
| Qionghai | 3086 | 2780 | 2108.3 |
| Nada | 3188 | 2476 | 25610 |
| Zhanjiang | 3085 | 2781 | 27611 |
| Wanning | 3086 | 2780 | 2108.3 |
| Wuzhishan | 3086 | 2374 | 26210 |
| Lianjiang | 3187 | 2678 | 29712 |
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 July?
In July the average high in Haikou is 30 °C (87 °F) and the average low is 26 °C (80 °F).
Does it rain a lot in Haikou in July?
On average about 236 mm (9.3 in) of precipitation falls in July; it ranks 4th of the 12 months.
Is July 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 July?
In the middle of July the day in Haikou lasts about 13.2 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Haikou in July?
The average relative humidity in July is about 87%. Combined with warm days, it can feel muggy.
How cloudy is Haikou in July?
On average about 68% of the sky is covered by cloud in July. 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.