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Hourly Forecast
Daylight Hours
06:34
Sunrise
18:33
Sunset
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Waxing Gibbous
15:05
Moonrise
02:20
Moonset
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View stargazing scoreWeather in Sanya today, September 21, 2026
Rain features in Sanya on September 21, 2026, so keep waterproofs handy through the day. The damp theme is strongest where shower chances rise. Expect a brighter morning, with limited cloud around 53% by 07:00. Conditions start on a settled note.
The temperature range runs from about 25°C up to 29°C. Relative humidity sits between 67% and 89%, reaching its peak around 07:00. Winds stay light, near 6.1 km/h by 20:00, so the day feels still more than breezy.
Expect the wet theme to continue later, as rain odds reach 42% near 15:00. Cloud amounts hold near 67% around 20:00. Views remain open at about 16.1 km. The sun rises at 06:34 and sets at 18:33, for a total of 11 hours 59 minutes of sunlight today.
The practical takeaway for Sanya on September 21, 2026 is simple: plan for rain, keep layers handy, and work around a high of about 29°C.
Frequently asked questions about weather in Sanya
How warm does it get in Sanya?
The warmest month in Sanya is June, with average high temperatures of 30°C. The average temperature during this period is around 29°C.
How cold does it get in Sanya?
The coldest month in Sanya is January, with average low temperatures of 19°C. The average temperature during this period is around 21°C.
What is the wettest time of year in Sanya?
The wettest month in Sanya is July, with an average of 300mm of precipitation.
What is the driest time of year in Sanya?
The driest month in Sanya is December, with an average of 12mm of precipitation.
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