| Stations | January to March | Apr to Jun | Jul to Sep | Oct to Dec |
| Haikou | 27.3 | 29.2 | 35.6 | 22.0 |
| Wenchang | 30.7 | 30.6 | 34.3 | 21.7 |
| Qionghai | 39.0 | 39.0 | 43.3 | 31.0 |
| Wanning | 41.3 | 37.0 | 42.3 | 34.7 |
| Linshui | 39.0 | 39.3 | 40.3 | 36.0 |
| Sanya | 42.3 | 44.3 | 41.0 | 44.3 |
| Ledong | 38.3 | 42.7 | 40.7 | 44.0 |
| Dongfang | 36.3 | 41.3 | 40.7 | 39.7 |
| Changjian | 40.3 | 39.7 | 42.3 | 40.3 |
| Danzhou | 31.7 | 38.3 | 41.0 | 33.7 |
| Lingao | 27.0 | 34.7 | 36.3 | 26.7 |
| Chengmai | 30.3 | 35.7 | 38.0 | 27.0 |
| Dingan | 29.7 | 34.7 | 42.0 | 27.0 |
| Tunchang | 36.7 | 41.3 | 48.3 | 33.0 |
| Qiongzhoung | 44.7 | 44.6 | 51.3 | 44.7 |
| Baisha | 42.7 | 43.3 | 51.0 | 46.7 |
| Wuzhishan | 48.7 | 42.0 | 43.3 | 50.3 |
| Baoting | 45.0 | 43.7 | 47.0 | 47.7 |