Chart of year Passau-Donau / Donau
| Date | Water temperature [°C] | Maximum [°C] | Minimum [°C] |
|---|---|---|---|
| 23.07.2026 | 22.9 | 23.2 | 22.8 |
| 22.07.2026 | 23.3 | 23.6 | 22.9 |
| 21.07.2026 | 23.4 | 23.8 | 23.0 |
| 20.07.2026 | 24.0 | 24.4 | 23.6 |
| 19.07.2026 | 24.5 | 24.8 | 24.1 |
| 18.07.2026 | 24.9 | 25.4 | 24.5 |
| 17.07.2026 | 24.8 | 25.3 | 24.3 |