Haikou weather in July
Temperature, sea and sunshine in July: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in July
Fair
Best time to visit: October – April
What is the weather like in Haikou in July?
In July, Haikou is hot: daytime highs average 31 °C, and even at night it stays warm at around 27 °C. The sea averages 28.8 °C – lovely and warm for swimming. The sun shines for around 7 hours a day. It rains often – on about 17 days, adding up to 178 mm. On about 24 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, July is a so-so month for a holiday in Haikou.
July compared
How the weather changes from June to August. Tap a month to open it.
More details for July
- Daylight
- 13 h 14 min06:07 – 19:22
- UV index
- 12 · extremeclear sky, noon (estimate)All months
- Muggy days
- 31 daysdew point 18 °C or moreAll months
- Wind
- 20 km/haverage daily peakAll months
- Cloud cover
- 74 %on averageAll months
- Hot days
- 24 days30 °C or moreAll months
- Time zone
- UTC+8Asia/Shanghai
How the score comes together
- Temperatureweight 50 %48 %
- Sunshineweight 20 %73 %
- Few rainy daysweight 30 %6 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in July
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
- Rain jacket or umbrella
Haikou in July: quick answers
Is Haikou hot in July?
Yes. In July, Haikou is hot: daytime highs average 31 °C and nights stay around 27 °C. On about 24 days the thermometer climbs to 30 °C or more.
Can you swim in Haikou in July?
Yes. In July the sea averages 28.8 °C – lovely and warm for swimming.
Does it rain much in Haikou in July?
It rains often – on about 17 days, adding up to 178 mm.
Haikou month by month
The whole year in HaikouAll destinations: ChinaWhere to go in JulySea temperature in July
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