Pacific Northwest
Roche Harbor
San Juan Island · Washington · NOAA station 9449834 · Tide predictions
48.6100, -123.1550
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48-hour outlook
Drag across the curve to inspect any time. Weather icons show the forecast at each high tide.
Drawn from the high/low predictions — NOAA publishes high/low only for this station.
The next seven days
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H = high tide · L = low tide · highs & lows in local time
On the water nearby
New Dungeness buoy · 19 mi S · Station 46088
Wind & wave reports →
Nearby tide stations
- Hanbury Point, Mosquito Pass, San Juan I. · 2.1 mi S
- WALDRON ISLAND, PUGET SOUND · 7.5 mi NE
- Friday Harbor, San Juan Island · 7.9 mi SE
- Kanaka Bay, San Juan Island · 9.2 mi S
- Orcas, Orcas Island · 9.4 mi E
Plan ahead
2027 tide extremes for this station
Highest predicted high tide: 8.8 ft — Sun Jan 24 · 6:55 AM
Lowest predicted low tide: -3.6 ft — Sun Jul 4 · 11:27 AM
Biggest single-day swing: 11.9 ft on Sun Jun 6
Best daytime minus tides of 2027
| Date | Low tide | Height |
|---|---|---|
| Sun Jul 4 | 11:27 AM | -3.6 ft |
| Sun Jun 6 | 12:28 PM | -3.5 ft |
| Sat Jun 5 | 11:41 AM | -3.5 ft |
| Sat Jul 3 | 10:40 AM | -3.4 ft |
| Mon Jul 5 | 12:14 PM | -3.3 ft |
| Mon Jun 7 | 1:17 PM | -3.2 ft |
| Fri Jun 4 | 10:57 AM | -3.1 ft |
| Sat May 8 | 12:44 PM | -2.9 ft |
| Fri Jul 2 | 9:54 AM | -2.9 ft |
| Sun May 9 | 1:32 PM | -2.9 ft |
198 minus tides (below 0 ft) are predicted here in 2027. The table shows up to the 10 lowest that fall between 7 AM and 7 PM — the ones worth planning a clam dig or tidepool walk around.
About this station
NOAA builds the predictions for Roche Harbor, San Juan Island from the PORT TOWNSEND station: high tides about 0.90× the height, 33 min later; low tides about the same height, 47 min later.
Puget Sound and the Columbia estuary amplify mixed tides far inland — ranges past 10 ft in the South Sound — with river flow stacked on top.