| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2023-12-01 | 晴天 | 10°/4° | 0.0 mm |
| 2023-12-02 | 晴天 | 11°/4° | 0.0 mm |
| 2023-12-03 | 晴天 | 12°/5° | 0.0 mm |
| 2023-12-04 | 晴天 | 12°/5° | 0.0 mm |
| 2023-12-05 | 晴天 | 11°/6° | 1.5 mm |
| 2023-12-06 | 晴天 | 14°/10° | 4.2 mm |
| 2023-12-07 | 晴天 | 17°/9° | 0.0 mm |
| 2023-12-08 | 晴天 | 15°/8° | 0.0 mm |
| 2023-12-09 | 晴天 | 16°/9° | 0.0 mm |
| 2023-12-10 | 晴天 | 18°/10° | 0.0 mm |
| 2023-12-11 | 晴天 | 13°/11° | 1.5 mm |
| 2023-12-12 | 晴天 | 13°/9° | 15.3 mm |
| 2023-12-13 | 晴天 | 13°/6° | 0.0 mm |
| 2023-12-14 | 晴天 | 12°/6° | 0.0 mm |
| 2023-12-15 | 晴天 | 11°/9° | 0.7 mm |
| 2023-12-16 | 晴天 | 18°/9° | 0.4 mm |
| 2023-12-17 | 晴天 | 15°/4° | 0.0 mm |
| 2023-12-18 | 晴天 | 8°/3° | 0.0 mm |
| 2023-12-19 | 晴天 | 7°/3° | 1.5 mm |
| 2023-12-20 | 晴天 | 11°/5° | 0.0 mm |
| 2023-12-21 | 晴天 | 11°/4° | 0.0 mm |
| 2023-12-22 | 晴天 | 8°/2° | 0.0 mm |
| 2023-12-23 | 晴天 | 8°/1° | 0.0 mm |
| 2023-12-24 | 晴天 | 8°/2° | 0.0 mm |
| 2023-12-25 | 晴天 | 10°/2° | 0.3 mm |
| 2023-12-26 | 晴天 | 11°/3° | 0.0 mm |
| 2023-12-27 | 晴天 | 10°/4° | 0.0 mm |
| 2023-12-28 | 晴天 | 8°/3° | 0.0 mm |
| 2023-12-29 | 晴天 | 12°/4° | 0.0 mm |
| 2023-12-30 | 晴天 | 13°/5° | 0.3 mm |
| 2023-12-31 | 晴天 | 12°/8° | 3.8 mm |
2023年12月水户市共记录 31 天，平均最高 11℃、最低 5℃，降水日 10 天。