| 2025年 | 2026年 | 平年値 | |
| 8-2 | 30 | 0 | 28.6 |
| 8-3 | 30.4 | 0 | 28.5 |
| 8-4 | 27.5 | 0 | 27.3 |
| 8-5 | 25.7 | 0 | 26.7 |
| 8-6 | 27 | 0 | 27.4 |
| 8-7 | 26.3 | 0 | 26.7 |
| 8-8 | 29 | 0 | 27.7 |
| 8-9 | 28.3 | 0 | 28.2 |
| 8-10 | 28 | 0 | 27.9 |
| 8-11 | 27.9 | 0 | 27.9 |
| 8-12 | 25.7 | 0 | 27.6 |
| 8-13 | 25.5 | 0 | 27.8 |
| 8-14 | 26.3 | 0 | 27.4 |
| 8-15 | 29.1 | 0 | 27.5 |
| 8-16 | 27.4 | --- | 27.4 |