| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2026-09-01 | 小毛毛雨 | 29°/18° | 0.6 mm |
| 2026-09-02 | 阵雨 | 28°/18° | 4.3 mm |
| 2026-09-03 | 小毛毛雨 | 29°/18° | 0.3 mm |
| 2026-09-04 | 小毛毛雨 | 28°/19° | 0.5 mm |
| 2026-09-05 | 小毛毛雨 | 30°/19° | 0.2 mm |
| 2026-09-06 | 小毛毛雨 | 30°/19° | 0.2 mm |
| 2026-09-07 | 小毛毛雨 | 30°/18° | 0.1 mm |
| 2026-09-08 | 小毛毛雨 | 30°/19° | 2.1 mm |
| 2026-09-09 | 小毛毛雨 | 30°/19° | 1.3 mm |
| 2026-09-10 | 阴 | 31°/18° | 0.0 mm |
| 2026-09-11 | 小毛毛雨 | 28°/18° | 1.8 mm |
| 2026-09-12 | 小毛毛雨 | 30°/19° | 0.7 mm |
| 2026-09-13 | 小毛毛雨 | 29°/18° | 1.0 mm |
| 2026-09-14 | 阵雨 | 28°/18° | 6.2 mm |
| 2026-09-15 | 阵雨 | 28°/18° | 4.7 mm |
| 2026-09-16 | 小毛毛雨 | 28°/18° | 1.8 mm |
| 2026-09-17 | 阵雨 | 28°/18° | 5.8 mm |
| 2026-09-18 | 小毛毛雨 | 28°/18° | 0.9 mm |
| 2026-09-19 | 中阵雨 | 29°/18° | 14.1 mm |
| 2026-09-20 | 中阵雨 | 28°/19° | 16.7 mm |
| 2026-09-21 | 中阵雨 | 22°/19° | 29.7 mm |
| 2026-09-22 | 中阵雨 | 25°/19° | 19.5 mm |
| 2026-09-23 | 中阵雨 | 28°/19° | 17.1 mm |
| 2026-09-24 | 阵雨 | 26°/19° | 4.6 mm |
| 2026-09-25 | 小毛毛雨 | 26°/19° | 0.4 mm |
| 2026-09-26 | 阵雨 | 25°/19° | 7.5 mm |
| 2026-09-27 | 中阵雨 | 25°/19° | 10.4 mm |
| 2026-09-28 | 阵雨 | 26°/19° | 6.2 mm |
| 2026-09-29 | 大毛毛雨 | 26°/19° | 5.5 mm |
| 2026-09-30 | 雷阵雨 | 26°/18° | 21.5 mm |
2026年09月圣塞瓦斯蒂安 德亚利共记录 30 天，平均最高 27℃、最低 18℃，降水日 29 天。