Haikou weather in October
Temperature, sea and sunshine in October: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in October
Good
Best time to visit: October – April
What is the weather like in Haikou in October?
In October, Haikou is hot: daytime highs average 27 °C, and even at night it stays warm at around 25 °C. The sea averages 27.4 °C – lovely and warm for swimming. Expect around 5 hours of sunshine a day. It rains often – on about 15 days, adding up to 196 mm. The air is often humid and muggy. All in all, October is a good month for a holiday in Haikou.
October compared
How the weather changes from September to November. Tap a month to open it.
| SeptemberSep | OctoberOct | NovemberNov | |
|---|---|---|---|
| Score | 45 | 62 | 75 |
| Day | 29° | 27° | 25° |
| Night | 26° | 25° | 22° |
| Sea | 28° | 27° | 25° |
| Sun | 6 h | 5 h | 4 h |
| Rain days | 19 | 15 | 8 |
More details for October
- Daylight
- 11 h 43 min06:33 – 18:16
- UV index
- 9 · very highclear sky, noon (estimate)All months
- Muggy days
- 29 daysdew point 18 °C or moreAll months
- Wind
- 25 km/haverage daily peakAll months
- Cloud cover
- 54 %on averageAll months
- Hot days
- 1 day30 °C or moreAll months
- Time zone
- UTC+8Asia/Shanghai
How the score comes together
- Temperatureweight 50 %95 %
- Sunshineweight 20 %38 %
- Few rainy daysweight 30 %24 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Insect repellent
- Rain jacket or umbrella
Haikou in October: quick answers
Is Haikou hot in October?
Yes. In October, Haikou is hot: daytime highs average 27 °C and nights stay around 25 °C.
Can you swim in Haikou in October?
Yes. In October the sea averages 27.4 °C – lovely and warm for swimming.
Does it rain much in Haikou in October?
It rains often – on about 15 days, adding up to 196 mm.
Haikou month by month
The whole year in HaikouAll destinations: ChinaWhere to go in OctoberSea temperature in October
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