| 2024年 | 2025年 | 平年値 | |
| 8-17 | 28.6 | 27.7 | 26.7 |
| 8-18 | 28.6 | 27.7 | 26.5 |
| 8-19 | 27.6 | 28.2 | 26.5 |
| 8-20 | 26.4 | 28.5 | 26.5 |
| 8-21 | 26.1 | 28.8 | 26.6 |
| 8-22 | 26 | 27.9 | 26.5 |
| 8-23 | 26.1 | 27.3 | 26.7 |
| 8-24 | 26.3 | 27.7 | 26.8 |
| 8-25 | 27 | 27 | 26.9 |
| 8-26 | 27.6 | 27.1 | 27 |
| 8-27 | 26.9 | --- | 27 |
| 8-28 | 26.7 | --- | 27 |
| 8-29 | 26.9 | --- | 27.1 |
| 8-30 | 26.2 | --- | 26.9 |
| 8-31 | 26.1 | --- | 26.8 |