| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2026-05-01 | 阴 | 21°/6° | 0.0 mm |
| 2026-05-02 | 阴 | 21°/6° | 0.0 mm |
| 2026-05-03 | 毛毛雨 | 16°/6° | 0.8 mm |
| 2026-05-04 | 小雨 | 13°/7° | 3.9 mm |
| 2026-05-05 | 小毛毛雨 | 12°/3° | 0.3 mm |
| 2026-05-06 | 阴 | 11°/0° | 0.0 mm |
| 2026-05-07 | 阴 | 13°/2° | 0.0 mm |
| 2026-05-08 | 多云 | 15°/2° | 0.0 mm |
| 2026-05-09 | 阴 | 12°/4° | 0.0 mm |
| 2026-05-10 | 阴 | 13°/3° | 0.0 mm |
| 2026-05-11 | 小毛毛雨 | 14°/5° | 0.1 mm |
| 2026-05-12 | 毛毛雨 | 14°/7° | 1.6 mm |
| 2026-05-13 | 阵雨 | 18°/10° | 6.1 mm |
| 2026-05-14 | 小毛毛雨 | 13°/6° | 1.1 mm |
| 2026-05-15 | 阴 | 15°/6° | 0.0 mm |
| 2026-05-16 | 大毛毛雨 | 18°/8° | 3.2 mm |
| 2026-05-17 | 阴 | 14°/5° | 0.0 mm |
| 2026-05-18 | 阴 | 20°/4° | 0.0 mm |
| 2026-05-19 | 中阵雨 | 19°/12° | 11.2 mm |
| 2026-05-20 | 小毛毛雨 | 19°/11° | 0.2 mm |
| 2026-05-21 | 阴 | 20°/10° | 0.0 mm |
| 2026-05-22 | 大毛毛雨 | 18°/9° | 6.5 mm |
| 2026-05-23 | 小毛毛雨 | 24°/8° | 0.4 mm |
| 2026-05-24 | 小毛毛雨 | 19°/11° | 1.2 mm |
| 2026-05-25 | 大毛毛雨 | 16°/10° | 1.8 mm |
| 2026-05-26 | 阴 | 18°/7° | 0.0 mm |
| 2026-05-27 | 毛毛雨 | 14°/6° | 2.0 mm |
| 2026-05-28 | 阴 | 16°/8° | 0.0 mm |
| 2026-05-29 | 阴 | 17°/6° | 0.0 mm |
| 2026-05-30 | 晴天 | 22°/7° | 0.0 mm |
| 2026-05-31 | 阴 | 16°/8° | 0.0 mm |
2026年05月赫尔辛基共记录 31 天，平均最高 16℃、最低 6℃，降水日 15 天。