Mild
Average highs are around 22°C, so days are mild rather than hot.
December verdict
Haikou, Hainan, China in December
Weather score57Good
Good for holiday weather
Average highs are around 22°C, so days are mild rather than hot. Sunshine averages 4.7h per day, so this is not one of the brighter months. Rainfall averages 35mm, which is relatively low for holiday planning.
December weather
Monthly averages
Temp
22°C
Rain
35mm
Sun
4.7h
Sea
22°C
Weather score
57
Good
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 35mm, which is relatively low for holiday planning.
Limited sun
Sunshine averages 4.7h per day, so this is not one of the brighter months.
Swimmable
Sea temperatures average 22°C, which can work for swimming but may feel fresh.
Map
Weather map
Compare Haikou, Hainan, China with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
December22°C average high
December is cooler than the yearly average, which can make sightseeing feel gentler than in hotter months.
Warmest monthsMay to September
This stretch sets the upper range for average daytime heat.
Rain
December35mm average rain
December is one of Haikou's driest months, making outdoor days easier to plan than in wetter parts of the year.
Driest monthsJanuary to April and November to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
December4.7 hours average sun
December is below Haikou's yearly sunshine average, so bright-day planning is less reliable than in peak months.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
December22°C average sea
December is below Haikou's yearly sea-temperature average, so swimming can feel fresher.
Warmest seaMay to October
Sea temperatures are usually near 26°C in this stretch, so swimming comfort is at its strongest.
Weather score
December57 weather score
December sits close to Haikou's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsMarch to April and October to November
These months have the strongest weather score in the monthly averages.
