Haikou (Meilan) vs Sanya (Tianya): which is sunnier?
🇨🇳 China vs 🇨🇳 China · 212 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 Haikou (Meilan)'s 1,736. Sanya (Tianya) has the higher Sunshine Score in 6 of 12 months, Haikou (Meilan) in 1 (5 within 2 points).
Scores are the 0–100 Sunshine Score — sunshine, daytime warmth and dryness in one number, per month.
At a glance
| Haikou (Meilan) | Sanya (Tianya) | |
|---|---|---|
| Sunshine hours / year | 1,736 | 2,058 |
| Sunniest month | February (84/100) | February (88/100) |
| Nov–Feb average score | 80/100 | 82/100 |
| Jun–Aug average score | 61/100 | 63/100 |
| Rain / year | 1,841 mm | 1,930 mm |
| Warmest sea | 32°C / 90°F | 30°C / 86°F |
| Peak midday UV | 10 (very high) | 9 (very high) |
Haikou (Meilan) vs Sanya (Tianya) month by month
| Month | Sunshine Score | Day high °C | Rain mm | Sea °C | ||||
|---|---|---|---|---|---|---|---|---|
| Haikou (Meilan) | Sanya (Tianya) | Haikou (Meilan) | Sanya (Tianya) | Haikou (Meilan) | Sanya (Tianya) | Haikou (Meilan) | Sanya (Tianya) | |
| January | 83 | 87 | 21° | 25° | 33 | 21 | 21° | 25° |
| February | 84 | 88 | 22° | 28° | 28 | 15 | 22° | 25° |
| March | 80 | 84 | 25° | 30° | 47 | 36 | 23° | 25° |
| April | 73 | 76 | 28° | 32° | 88 | 81 | 28° | 28° |
| May | 61 | 64 | 30° | 32° | 190 | 145 | 29° | 30° |
| June | 61 | 63 | 30° | 31° | 205 | 191 | 31° | 30° |
| July | 61 | 63 | 30° | 31° | 236 | 266 | 31° | 30° |
| August | 61 | 63 | 30° | 31° | 313 | 287 | 32° | 29° |
| September | 61 | 63 | 29° | 31° | 293 | 329 | 31° | 30° |
| October | 61 | 63 | 28° | 29° | 278 | 408 | 28° | 30° |
| November | 74 | 71 | 25° | 28° | 81 | 110 | 26° | 28° |
| December | 80 | 83 | 22° | 25° | 49 | 41 | 21° | 26° |
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 Haikou (Meilan) · Dec Sanya (Tianya).
When to pick which
- November–February: too close to call — Haikou (Meilan) averages 80/100, Sanya (Tianya) 82/100. Sanya (Tianya) is the warmer, around 27°C daytime highs vs 23°C. See the winter sun ranking.
- March–May: Sanya (Tianya) (average score 75/100 vs 71). Sanya (Tianya) is the warmer, around 31°C daytime highs vs 28°C.
- June–August: too close to call — Haikou (Meilan) averages 61/100, Sanya (Tianya) 63/100. Daytime highs are similar (30°C vs 31°C).
- September–October: too close to call — Haikou (Meilan) averages 61/100, Sanya (Tianya) 63/100. Daytime highs are similar (29°C vs 30°C).
Sea temperature
Haikou (Meilan)'s sea gets warmer: 32°C / 90°F at its peak vs 30°C. Swimmable water (21°C+): Haikou (Meilan) all year, Sanya (Tianya) all year. Month-by-month sea temperatures are in the table above.
Full month-by-month guides: Haikou (Meilan) weather by month · Sanya (Tianya) weather by month · Best time to visit China.
More comparisons: Haikou (Meilan) vs Zhanjiang · Haikou (Meilan) vs Beihai · Haikou (Meilan) vs Qionghai (Basuo) · Sanya (Tianya) vs Huế · Sanya (Tianya) vs Qionghai (Basuo) · all head-to-heads