| 2025年 | 2026年 | 平年値 | |
| 8-2 | 30.4 | --- | 30.4 |
| 8-3 | 30.4 | --- | 30.4 |
| 8-4 | 30.7 | --- | 30.7 |
| 8-5 | 30.9 | --- | 30.9 |
| 8-6 | 32.6 | --- | 32.6 |
| 8-7 | 29.3 | --- | 29.3 |
| 8-8 | 29.1 | --- | 29.1 |
| 8-9 | 28.6 | --- | 28.6 |
| 8-10 | 27.2 | --- | 27.2 |
| 8-11 | 27.5 | --- | 27.5 |
| 8-12 | 26.2 | --- | 26.2 |
| 8-13 | 27.1 | --- | 27.1 |
| 8-14 | 28 | --- | 28 |
| 8-15 | 28.3 | --- | 28.3 |
| 8-16 | 28.1 | --- | 28.1 |