West Coast
Steamboat Slough
Snug Harbor Marina · California · NOAA station 9415414 · Tide predictions
38.1833, -121.6550
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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
San Francisco Bar, CA (142) buoy · 60 mi SW · Station 46237
Wind & wave reports →
Nearby tide stations
- Rio Vista · 3.3 mi SW
- Georgiana Slough entrance · 5.8 mi SE
- Threemile Slough · 5.8 mi SW
- Threemile Slough entrance · 6.9 mi S
- Korths Harbor, San Joaquin River · 7.6 mi SE
Plan ahead
2027 tide extremes for this station
Highest predicted high tide: 4.9 ft — Sun Jul 4 · 3:53 AM
Lowest predicted low tide: -0.4 ft — Fri Jan 22 · 11:34 PM
Biggest single-day swing: 5.2 ft on Sun Jul 4
Best daytime minus tides of 2027
| Date | Low tide | Height |
|---|---|---|
| Mon Jun 7 | 2:24 PM | -0.4 ft |
| Sun Jun 6 | 1:39 PM | -0.3 ft |
| Mon Jul 5 | 1:19 PM | -0.3 ft |
| Tue Jun 8 | 3:10 PM | -0.3 ft |
| Tue Jul 6 | 1:59 PM | -0.3 ft |
| Sat Jun 5 | 12:52 PM | -0.3 ft |
| Sun Jul 4 | 12:37 PM | -0.3 ft |
| Wed May 19 | 11:34 AM | -0.3 ft |
| Wed Jun 9 | 3:54 PM | -0.3 ft |
| Thu May 20 | 12:20 PM | -0.2 ft |
154 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 Steamboat Slough, Snug Harbor Marina from the PORT CHICAGO, SUISUN BAY station: high tides about 0.80× the height, 144 min later; low tides about 0.65× the height, 168 min later.
Mixed semidiurnal tides — two unequal highs and two unequal lows a day — with ranges growing as you head north. Harbor entrances feel the swell as much as the tide.