The average air temperature in Sanya in February is + 25 ° C, the water temperature is + 25 ° C, these figures can of course vary from year to year: the air temperature may drop to + 20 ° C or rise to + 27 ° C. In general, the period from October to April is considered on. Hainan is the best time for rest, because in these months the least amount of precipitation falls and comfortable weather is established without exhausting heat.