Boulogne-sur-Mer — France
Tide times & tide chart
Predictions are not observations — conditions vary with weather and river flow. Not for navigation.
Slackwater predicts tides and currents offline, on your phone — tides worldwide, currents across the US and Canada.
Requires iOS 26 or later.
Tide times for the next 7 days
| Day | Tide | Time | Height |
|---|---|---|---|
| Tue 20 Oct 2026 | Low | 11.3 ft | |
| Tue 20 Oct 2026 | High | 20.5 ft | |
| Tue 20 Oct 2026 | Low | 11.5 ft | |
| Tue 20 Oct 2026 | High | 20.8 ft | |
| Wed 21 Oct 2026 | Low | 11.0 ft | |
| Wed 21 Oct 2026 | High | 21.4 ft | |
| Wed 21 Oct 2026 | Low | 10.6 ft | |
| Wed 21 Oct 2026 | High | 22.3 ft | |
| Thu 22 Oct 2026 | Low | 9.6 ft | |
| Thu 22 Oct 2026 | High | 23.2 ft | |
| Thu 22 Oct 2026 | Low | 8.9 ft | |
| Thu 22 Oct 2026 | High | 24.2 ft | |
| Fri 23 Oct 2026 | Low | 7.8 ft | |
| Fri 23 Oct 2026 | High | 25.2 ft | |
| Fri 23 Oct 2026 | Low | 7.1 ft | |
| Fri 23 Oct 2026 | High | 26.1 ft | |
| Sat 24 Oct 2026 | Low | 6.1 ft | |
| Sat 24 Oct 2026 | High | 27.0 ft | |
| Sat 24 Oct 2026 | Low | 5.5 ft | |
| Sat 24 Oct 2026 | High | 27.8 ft | |
| Sun 25 Oct 2026 | Low | 4.8 ft | |
| Sun 25 Oct 2026 | High | 28.5 ft | |
| Sun 25 Oct 2026 | Low | 4.4 ft | |
| Sun 25 Oct 2026 | High | 29.1 ft | |
| Mon 26 Oct 2026 | Low | 4.0 ft | |
| Mon 26 Oct 2026 | High | 29.5 ft | |
| Mon 26 Oct 2026 | Low | 3.7 ft |
Station facts
- Position
- 50.7274° N, 1.5777° E
- Time zone
- Europe/Paris
- Datum
- LAT datum · computed from harmonic constituents
- Country
- France
Heights are measured above chart datum. A negative height means there is that much less water than the charted depth shows.
Slackwater database (https://github.com/openwatersio/slackwater-database). Source: Hart-Davis, M., Dettmering, D., Seitz, F. (2025), TICON-4: TIdal CONstants based on GESLA-4 sea-level records, SEANOE, https://doi.org/10.17882/109129. Licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Modified: see https://github.com/openwatersio/slackwater-database#modifications-to-source-data
How we check predictions — dated samples and their limits.