Sanya (Tianya) weather by month & the best time to visit
China · coastal city break · tropical — wet & dry seasons climate
The best time to visit Sanya (Tianya) is February — its sunniest month (Sunshine Score 88/100), with January and March close behind. Sanya (Tianya) averages about 2,058 hours of sunshine a year. Daytime highs around 28°C / 82°F and roughly 15 mm of rain in February.
When is the best time to visit Sanya (Tianya)?
For sunshine, the best time to visit Sanya (Tianya) is February, then January and March. The dullest month is June (63/100, 191 mm of rain). The full month-by-month picture is in the table below.
How sunny is Sanya (Tianya)?
Sanya (Tianya) gets a moderate 2,058 hours of sunshine a year. February (88/100) is noticeably better than June (63). It ranks #132 of 254 destinations in China for annual sunshine, below the national median of 2,110 hours. Rain has a clear season: the wettest stretch, around September, carries about 53% of the annual 1,930 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 87 | 25° / 77°F | 16° / 61°F | 21 mm | 6 | 25° / 77°F |
| February | 88 | 28° / 82°F | 17° / 63°F | 15 mm | 7 | 25° / 77°F |
| March | 84 | 30° / 86°F | 20° / 68°F | 36 mm | 8 | 25° / 77°F |
| April | 76 | 32° / 90°F | 23° / 73°F | 81 mm | 9 | 28° / 82°F |
| May | 64 | 32° / 90°F | 25° / 77°F | 145 mm | 9 | 30° / 86°F |
| June | 63 | 31° / 88°F | 26° / 79°F | 191 mm | 9 | 30° / 86°F |
| July | 63 | 31° / 88°F | 26° / 79°F | 266 mm | 9 | 30° / 86°F |
| August | 63 | 31° / 88°F | 26° / 79°F | 287 mm | 9 | 29° / 84°F |
| September | 63 | 31° / 88°F | 25° / 77°F | 329 mm | 8 | 30° / 86°F |
| October | 63 | 29° / 84°F | 23° / 73°F | 408 mm | 7 | 30° / 86°F |
| November | 71 | 28° / 82°F | 20° / 68°F | 110 mm | 6 | 28° / 82°F |
| December | 83 | 25° / 77°F | 17° / 63°F | 41 mm | 6 | 26° / 79°F |
Sea temperature in Sanya (Tianya) by month
The sea off Sanya (Tianya) is warmest in May at around 30°C / 86°F, and coolest in January at 25°C / 77°F. The water sits at a comfortable 21°C or warmer roughly all year round. Month-by-month sea-surface temperatures are in the Sea column of the table above.
Head-to-head
How Sanya (Tianya) compares month by month: Sanya (Tianya) vs Haikou (Meilan) · Sanya (Tianya) vs Huế · Sanya (Tianya) vs Qionghai (Basuo) · all comparisons
Sanya (Tianya): questions and answers
What kind of destination is Sanya (Tianya)?
Sanya (Tianya) is a coastal city break in China with a tropical — wet & dry seasons climate — the sea reaches 30°C at its warmest and is swimmable (21°C+) year-round.
How many hours of sunshine does Sanya (Tianya) get a year?
Sanya (Tianya) gets about 2,058 hours of sunshine a year, at its best around February.
When is the best time to visit Sanya (Tianya)?
The sunniest time to visit Sanya (Tianya) is February, when the Sunshine Score peaks at 88/100 (with January and March close behind). Expect daytime highs around 28°C / 82°F.
What is the least sunny month in Sanya (Tianya)?
June is the least sunny month in Sanya (Tianya), scoring 63/100 with about 191 mm of rain.
What is the sea temperature in Sanya (Tianya)?
The sea in Sanya (Tianya) ranges from about 25°C (January) to 30°C (May). Month-by-month sea temperatures are on this page.
How strong is the sun in Sanya (Tianya)?
The typical midday UV index in Sanya (Tianya) peaks around 9 (very high) in April, easing to about 6 (high) in January. Month-by-month midday UV values are in the UV column of the table on this page.
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