| 2025年 | 2026年 | 平年値 | |
| 8-11 | 28.2 | 28.3 | 28.7 |
| 8-12 | 25.6 | 28.5 | 27.5 |
| 8-13 | 25.3 | 28 | 25.7 |
| 8-14 | --- | 28.3 | 26.3 |
| 8-15 | 29 | 28.6 | 27.5 |
| 8-16 | 27.3 | 28.6 | 28.1 |
| 8-17 | 27.4 | --- | 28.4 |
| 8-18 | 27.5 | --- | 28.6 |
| 8-19 | 28.1 | --- | 27.3 |
| 8-20 | 28.1 | 27 | 27.5 |
| 8-21 | 28.4 | 28.7 | 27.2 |
| 8-22 | 27.8 | --- | 27 |
| 8-23 | 27.3 | --- | 28.3 |
| 8-24 | 27.4 | 29.1 | 28.7 |
| 8-25 | 27.2 | 29.9 | 28.7 |