West Coast
Hercules
Refugio Landing · California · NOAA station 9415074 · Tide predictions
38.0233, -122.2920
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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 · 25 mi SW · Station 46237
Wind & wave reports →
Nearby tide stations
- Selby · 3.6 mi NE
- Pinole Point · 3.9 mi W
- Mare Island · 4.0 mi NE
- Crockett · 4.5 mi NE
- Vallejo, Mare Island Strait · 6.2 mi N
Plan ahead
2027 tide extremes for this station
Highest predicted high tide: 7.5 ft — Thu Jan 21 · 10:54 AM
Lowest predicted low tide: -1.5 ft — Sun Jun 6 · 9:00 AM
Biggest single-day swing: 8.9 ft on Sun Jul 4
Best daytime minus tides of 2027
| Date | Low tide | Height |
|---|---|---|
| Sun Jun 6 | 9:00 AM | -1.5 ft |
| Sat Jun 5 | 8:12 AM | -1.5 ft |
| Sun Jul 4 | 7:59 AM | -1.5 ft |
| Mon Jul 5 | 8:45 AM | -1.4 ft |
| Mon Jun 7 | 9:49 AM | -1.4 ft |
| Thu Jan 21 | 6:19 PM | -1.4 ft |
| Sat Jul 3 | 7:12 AM | -1.3 ft |
| Fri Jun 4 | 7:26 AM | -1.2 ft |
| Sat May 8 | 9:10 AM | -1.2 ft |
| Tue Jul 6 | 9:30 AM | -1.2 ft |
189 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 Hercules, Refugio Landing from the SAN FRANCISCO (Golden Gate) station: high tides about 1.05× the height, 75 min later; low tides about 0.85× the height, 99 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.