| 2025年 | 2026年 | 平年値 | |
| 8-2 | 28.9 | --- | 17.9 |
| 8-3 | 29.3 | --- | 26.7 |
| 8-4 | 26.6 | --- | 25.6 |
| 8-5 | 24.7 | --- | 24.7 |
| 8-6 | 26.4 | --- | 25.4 |
| 8-7 | 25.7 | --- | 24.9 |
| 8-8 | 28.3 | --- | 26.8 |
| 8-9 | 28 | --- | 26.3 |
| 8-10 | 27.8 | --- | 26.2 |
| 8-11 | 27.6 | --- | 26.6 |
| 8-12 | 24.9 | --- | 25.4 |
| 8-13 | 24.5 | --- | 25.8 |
| 8-14 | 26.6 | --- | 26.9 |
| 8-15 | 29 | --- | 27.4 |
| 8-16 | 29.8 | --- | 27.8 |