| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2025-12-01 | 阵雨 | 30°/20° | 7.2 mm |
| 2025-12-02 | 中阵雨 | 30°/20° | 6.2 mm |
| 2025-12-03 | 毛毛雨 | 30°/20° | 3.0 mm |
| 2025-12-04 | 阵雨 | 30°/20° | 4.6 mm |
| 2025-12-05 | 大毛毛雨 | 30°/20° | 2.7 mm |
| 2025-12-06 | 中阵雨 | 30°/20° | 7.0 mm |
| 2025-12-07 | 阵雨 | 30°/20° | 6.9 mm |
| 2025-12-08 | 中阵雨 | 29°/20° | 7.5 mm |
| 2025-12-09 | 阵雨 | 30°/20° | 7.1 mm |
| 2025-12-10 | 中阵雨 | 30°/20° | 7.7 mm |
| 2025-12-11 | 阵雨 | 31°/19° | 3.2 mm |
| 2025-12-12 | 阵雨 | 30°/20° | 3.8 mm |
| 2025-12-13 | 中阵雨 | 31°/20° | 9.6 mm |
| 2025-12-14 | 小毛毛雨 | 30°/20° | 1.5 mm |
| 2025-12-15 | 小毛毛雨 | 31°/20° | 0.7 mm |
| 2025-12-16 | 阵雨 | 30°/20° | 8.0 mm |
| 2025-12-17 | 阵雨 | 30°/20° | 4.6 mm |
| 2025-12-18 | 雷阵雨 | 30°/20° | 9.8 mm |
| 2025-12-19 | 阴 | 30°/20° | 0.0 mm |
| 2025-12-20 | 阵雨 | 30°/20° | 3.5 mm |
| 2025-12-21 | 中阵雨 | 30°/20° | 4.5 mm |
| 2025-12-22 | 晴天 | 30°/19° | 0.0 mm |
| 2025-12-23 | 晴间多云 | 31°/21° | 0.0 mm |
| 2025-12-24 | 小毛毛雨 | 31°/21° | 0.3 mm |
| 2025-12-25 | 中阵雨 | 31°/20° | 5.0 mm |
| 2025-12-26 | 雷阵雨 | 30°/20° | 31.8 mm |
| 2025-12-27 | 阵雨 | 29°/19° | 3.4 mm |
| 2025-12-28 | 毛毛雨 | 30°/19° | 2.1 mm |
| 2025-12-29 | 雷阵雨 | 30°/19° | 7.1 mm |
| 2025-12-30 | 晴天 | 30°/19° | 0.0 mm |
| 2025-12-31 | 晴天 | 30°/20° | 0.0 mm |
2025年12月圣塞瓦斯蒂安共记录 31 天，平均最高 30℃、最低 19℃，降水日 26 天。