| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2026-09-01 | 毛毛雨 | 30°/16° | 1.0 mm |
| 2026-09-02 | 中阵雨 | 28°/16° | 18.0 mm |
| 2026-09-03 | 毛毛雨 | 29°/16° | 1.0 mm |
| 2026-09-04 | 小毛毛雨 | 29°/16° | 0.1 mm |
| 2026-09-05 | 小毛毛雨 | 30°/16° | 0.1 mm |
| 2026-09-06 | 阴 | 30°/16° | 0.0 mm |
| 2026-09-07 | 毛毛雨 | 29°/16° | 1.5 mm |
| 2026-09-08 | 阴 | 28°/16° | 0.0 mm |
| 2026-09-09 | 阴 | 29°/15° | 0.0 mm |
| 2026-09-10 | 阴 | 29°/15° | 0.0 mm |
| 2026-09-11 | 阴 | 30°/16° | 0.0 mm |
| 2026-09-12 | 小毛毛雨 | 30°/15° | 0.3 mm |
| 2026-09-13 | 阴 | 29°/15° | 0.0 mm |
| 2026-09-14 | 阴 | 28°/15° | 0.0 mm |
| 2026-09-15 | 中阵雨 | 27°/16° | 10.5 mm |
| 2026-09-16 | 小毛毛雨 | 27°/16° | 0.6 mm |
| 2026-09-17 | 阵雨 | 27°/16° | 4.0 mm |
| 2026-09-18 | 阵雨 | 26°/17° | 10.7 mm |
| 2026-09-19 | 阵雨 | 29°/16° | 9.3 mm |
| 2026-09-20 | 阵雨 | 26°/17° | 16.8 mm |
| 2026-09-21 | 中阵雨 | 24°/17° | 23.6 mm |
| 2026-09-22 | 阵雨 | 25°/17° | 12.8 mm |
| 2026-09-23 | 阵雨 | 25°/16° | 11.8 mm |
| 2026-09-24 | 阵雨 | 24°/16° | 16.7 mm |
| 2026-09-25 | 小毛毛雨 | 27°/16° | 0.8 mm |
| 2026-09-26 | 大毛毛雨 | 26°/16° | 3.9 mm |
| 2026-09-27 | 阵雨 | 25°/17° | 8.6 mm |
| 2026-09-28 | 雷阵雨 | 24°/16° | 12.2 mm |
| 2026-09-29 | 阵雨 | 27°/17° | 9.4 mm |
| 2026-09-30 | 雷阵雨 | 26°/17° | 28.9 mm |
2026年09月圣塞瓦斯蒂安共记录 30 天，平均最高 27℃、最低 16℃，降水日 23 天。