| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2025-01-01 | 晴天 | 9°/4° | 0.0 mm |
| 2025-01-02 | 阴 | 11°/3° | 0.0 mm |
| 2025-01-03 | 中雪 | 3°/1° | 13.9 mm |
| 2025-01-04 | 毛毛雨 | 7°/0° | 1.0 mm |
| 2025-01-05 | 阴 | 8°/0° | 0.0 mm |
| 2025-01-06 | 中雨 | 10°/2° | 10.0 mm |
| 2025-01-07 | 小毛毛雨 | 11°/6° | 0.5 mm |
| 2025-01-08 | 阴 | 10°/4° | 0.0 mm |
| 2025-01-09 | 阴 | 10°/3° | 0.0 mm |
| 2025-01-10 | 阴 | 7°/1° | 0.0 mm |
| 2025-01-11 | 晴天 | 9°/2° | 0.0 mm |
| 2025-01-12 | 小毛毛雨 | 8°/2° | 0.3 mm |
| 2025-01-13 | 阴 | 11°/2° | 0.0 mm |
| 2025-01-14 | 阴 | 11°/2° | 0.0 mm |
| 2025-01-15 | 阴 | 12°/3° | 0.0 mm |
| 2025-01-16 | 阴 | 6°/1° | 0.0 mm |
| 2025-01-17 | 晴间多云 | 8°/1° | 0.0 mm |
| 2025-01-18 | 晴天 | 8°/0° | 0.0 mm |
| 2025-01-19 | 小雨 | 10°/2° | 2.4 mm |
| 2025-01-20 | 小毛毛雨 | 9°/6° | 0.3 mm |
| 2025-01-21 | 小毛毛雨 | 9°/5° | 0.5 mm |
| 2025-01-22 | 晴间多云 | 11°/3° | 0.0 mm |
| 2025-01-23 | 小毛毛雨 | 12°/3° | 0.2 mm |
| 2025-01-24 | 阴 | 11°/4° | 0.0 mm |
| 2025-01-25 | 小雨 | 9°/2° | 5.2 mm |
| 2025-01-26 | 阴 | 9°/1° | 0.0 mm |
| 2025-01-27 | 阴 | 8°/1° | 0.0 mm |
| 2025-01-28 | 小毛毛雨 | 12°/4° | 0.6 mm |
| 2025-01-29 | 阴 | 11°/4° | 0.0 mm |
| 2025-01-30 | 阴 | 10°/2° | 0.0 mm |
| 2025-01-31 | 阴 | 9°/1° | 0.0 mm |
2025年01月水户市共记录 31 天，平均最高 9℃、最低 2℃，降水日 11 天。