| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2026-01-01 | 阴 | -4°/-12° | 0.0 mm |
| 2026-01-02 | 中雪 | -3°/-4° | 7.8 mm |
| 2026-01-03 | 中雪 | -3°/-9° | 4.5 mm |
| 2026-01-04 | 小雪 | -9°/-12° | 1.8 mm |
| 2026-01-05 | 阴 | -11°/-16° | 0.0 mm |
| 2026-01-06 | 中雪 | -3°/-15° | 4.4 mm |
| 2026-01-07 | 中雪 | -3°/-14° | 6.5 mm |
| 2026-01-08 | 阴 | -12°/-17° | 0.0 mm |
| 2026-01-09 | 阴 | -11°/-16° | 0.0 mm |
| 2026-01-10 | 小雪 | -7°/-11° | 0.5 mm |
| 2026-01-11 | 小雪 | -6°/-7° | 2.3 mm |
| 2026-01-12 | 小雪 | -7°/-13° | 0.1 mm |
| 2026-01-13 | 小雪 | -8°/-12° | 0.5 mm |
| 2026-01-14 | 小雪 | -5°/-11° | 0.4 mm |
| 2026-01-15 | 中雪 | -1°/-6° | 3.3 mm |
| 2026-01-16 | 阴 | 0°/-4° | 0.0 mm |
| 2026-01-17 | 阴 | 0°/-5° | 0.0 mm |
| 2026-01-18 | 阴 | 0°/0° | 0.0 mm |
| 2026-01-19 | 雾 | 0°/-8° | 0.0 mm |
| 2026-01-20 | 雾 | -2°/-7° | 0.0 mm |
| 2026-01-21 | 小毛毛雨 | -1°/-9° | 0.2 mm |
| 2026-01-22 | 小毛毛雨 | -4°/-11° | 1.2 mm |
| 2026-01-23 | 小毛毛雨 | -9°/-15° | 0.6 mm |
| 2026-01-24 | 阴 | -9°/-17° | 0.0 mm |
| 2026-01-25 | 小雪 | -7°/-14° | 0.2 mm |
| 2026-01-26 | 小雪 | -7°/-15° | 1.2 mm |
| 2026-01-27 | 阴 | -8°/-19° | 0.0 mm |
| 2026-01-28 | 阴 | -10°/-19° | 0.0 mm |
| 2026-01-29 | 阴 | -10°/-19° | 0.0 mm |
| 2026-01-30 | 多云 | -10°/-22° | 0.0 mm |
| 2026-01-31 | 阴 | -13°/-22° | 0.0 mm |
2026年01月赫尔辛基共记录 31 天，平均最高 -5℃、最低 -12℃，降水日 16 天。