Roche Harbor — WA, United States
Tide times & tide chart
↑7:39am↓6:15pm
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 |
|---|---|---|---|
| Mon 19 Oct 2026 | Low | 1.1 ft | |
| Mon 19 Oct 2026 | High | 7.3 ft | |
| Mon 19 Oct 2026 | Low | 5.5 ft | |
| Mon 19 Oct 2026 | High | 5.2 ft | |
| Tue 20 Oct 2026 | Low | 1.5 ft | |
| Tue 20 Oct 2026 | High | 7.3 ft | |
| Tue 20 Oct 2026 | Low | 4.9 ft | |
| Wed 21 Oct 2026 | High | 5.2 ft | |
| Wed 21 Oct 2026 | Low | 1.9 ft | |
| Wed 21 Oct 2026 | High | 7.2 ft | |
| Wed 21 Oct 2026 | Low | 4.1 ft | |
| Thu 22 Oct 2026 | High | 5.4 ft | |
| Thu 22 Oct 2026 | Low | 2.3 ft | |
| Thu 22 Oct 2026 | High | 7.3 ft | |
| Thu 22 Oct 2026 | Low | 3.0 ft | |
| Fri 23 Oct 2026 | High | 5.8 ft | |
| Fri 23 Oct 2026 | Low | 2.9 ft | |
| Fri 23 Oct 2026 | High | 7.3 ft | |
| Fri 23 Oct 2026 | Low | 1.8 ft | |
| Sat 24 Oct 2026 | High | 6.4 ft | |
| Sat 24 Oct 2026 | Low | 3.6 ft | |
| Sat 24 Oct 2026 | High | 7.4 ft | |
| Sat 24 Oct 2026 | Low | 0.5 ft | |
| Sun 25 Oct 2026 | High | 7.0 ft | |
| Sun 25 Oct 2026 | Low | 4.4 ft | |
| Sun 25 Oct 2026 | High | 7.5 ft | |
| Sun 25 Oct 2026 | Low | -0.8 ft |
Station facts
- Position
- 48.6100° N, 123.1550° W
- Time zone
- America/Los_Angeles
- Datum
- MLLW datum · NOAA reference highs and lows, adjusted by published offsets
- Region
- WA, United States
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)
How we check predictions — dated samples and their limits.
Nearby
- Hanbury PointMosquito Pass · San Juan Island1.8 nm SSW
- Waldron IslandSan Juan Islands6.6 nm NE
- Friday HarborSan Juan Island6.9 nm SE
- Kanaka BaySan Juan Island8.0 nm SSE
- OrcasOrcas Island8.2 nm E
- Bedwell Harbour8.8 nm NNW