Sanya (Tianya) vs Qionghai (Basuo): which is sunnier?
🇨🇳 China vs 🇨🇳 China · 144 km apart · long-term climate normals (NASA POWER, 2001–2020)
Sanya (Tianya) is the sunnier overall: about 2,058 hours of sunshine a year to Qionghai (Basuo)'s 1,734. Sanya (Tianya) has the higher Sunshine Score in 6 of 12 months; the other 6 are within 2 points.
Scores are the 0–100 Sunshine Score — sunshine, daytime warmth and dryness in one number, per month.


At a glance
| Sanya (Tianya) | Qionghai (Basuo) | |
|---|---|---|
| Sunshine hours / year | 2,058 | 1,734 |
| Sunniest month | February (88/100) | February (83/100) |
| Nov–Feb average score | 82/100 | 78/100 |
| Jun–Aug average score | 63/100 | 61/100 |
| Rain / year | 1,930 mm | 1,843 mm |
| Warmest sea | 30°C / 86°F | 30°C / 86°F |
| Peak midday UV | 9 (very high) | 10 (very high) |
Sanya (Tianya) vs Qionghai (Basuo) month by month
| Month | Sunshine Score | Day high °C | Rain mm | Sea °C | ||||
|---|---|---|---|---|---|---|---|---|
| Sanya (Tianya) | Qionghai (Basuo) | Sanya (Tianya) | Qionghai (Basuo) | Sanya (Tianya) | Qionghai (Basuo) | Sanya (Tianya) | Qionghai (Basuo) | |
| January | 87 | 82 | 25° | 22° | 21 | 38 | 25° | 23° |
| February | 88 | 83 | 28° | 24° | 15 | 31 | 25° | 23° |
| March | 84 | 78 | 30° | 25° | 36 | 56 | 25° | 25° |
| April | 76 | 72 | 32° | 28° | 81 | 89 | 28° | 27° |
| May | 64 | 61 | 32° | 30° | 145 | 168 | 30° | 29° |
| June | 63 | 61 | 31° | 30° | 191 | 177 | 30° | 30° |
| July | 63 | 61 | 31° | 30° | 266 | 210 | 30° | 29° |
| August | 63 | 61 | 31° | 30° | 287 | 278 | 29° | 29° |
| September | 63 | 61 | 31° | 30° | 329 | 287 | 30° | 30° |
| October | 63 | 61 | 29° | 28° | 408 | 339 | 30° | 28° |
| November | 71 | 70 | 28° | 26° | 110 | 104 | 28° | 26° |
| December | 83 | 77 | 25° | 23° | 41 | 66 | 26° | 23° |
The sunnier month by month: Jan Sanya (Tianya) · Feb Sanya (Tianya) · Mar Sanya (Tianya) · Apr Sanya (Tianya) · May Sanya (Tianya) · Jun even · Jul even · Aug even · Sep even · Oct even · Nov even · Dec Sanya (Tianya).
When to pick which
- November–February: Sanya (Tianya) (average score 82/100 vs 78). Sanya (Tianya) is the warmer, around 27°C daytime highs vs 24°C. See the winter sun ranking.
- March–May: Sanya (Tianya) (average score 75/100 vs 70). Sanya (Tianya) is the warmer, around 31°C daytime highs vs 28°C.
- June–August: too close to call — Sanya (Tianya) averages 63/100, Qionghai (Basuo) 61/100. Daytime highs are similar (31°C vs 30°C).
- September–October: too close to call — Sanya (Tianya) averages 63/100, Qionghai (Basuo) 61/100. Daytime highs are similar (30°C vs 29°C).
Sea temperature
Both seas peak at 30°C / 86°F. Swimmable water (21°C+): Sanya (Tianya) all year, Qionghai (Basuo) all year. Month-by-month sea temperatures are in the table above.
Full month-by-month guides: Sanya (Tianya) weather by month · Qionghai (Basuo) weather by month · Best time to visit China.
More comparisons: Sanya (Tianya) vs Haikou (Meilan) · Sanya (Tianya) vs Huế · Qionghai (Basuo) vs Haikou (Meilan) · Qionghai (Basuo) vs Zhanjiang · all head-to-heads