Today's tide
Today's tides
ft above MLLW- Low4:11 AM0.5 ft
- High10:44 AM5.0 ft
- Low4:58 PM2.1 ft
- High9:31 PM5.0 ft
Tomorrow's tide (predicted)
Tomorrow's tides
ft above MLLW- Low4:56 AM0.5 ft
- High11:10 AM5.3 ft
- Low5:40 PM1.7 ft
- High10:33 PM5.1 ft
| Tide | Time | Height |
|---|---|---|
| Low | 4:11 AM | 0.5 ft |
| High | 10:44 AM | 5.0 ft |
| Low | 4:58 PM | 2.1 ft |
| High | 9:31 PM | 5.0 ft |
Best windows today
- Fishing5:00 to 6:00 PM
Moving water near sunset, as the tide rises toward the 9:31 PM high.
- Tidepools & shellingNo daylight low today
No daylight low today. The next good one is Friday at 6:00 PM.
- Surfing5:00 to 7:00 PM
Mid tide from 5:00 to 7:00 PM. No wind sensor at this station.
- Shallow boat launchAvoid 2:00 to 6:00 AM
Under 1.5 ft around low water. Launch before 2:00 AM.
Best windows tomorrow
- Fishing6:00 to 7:00 PM
Moving water near sunset, as the tide rises toward the 10:33 PM high.
- Tidepools & shellingNo daylight low today
No daylight low today. The next good one is Friday at 6:00 PM.
- Surfing7:00 to 9:00 AM
Mid tide from 7:00 to 9:00 AM. No wind sensor at this station.
- Shallow boat launchAvoid 3:00 to 7:00 AM
Under 1.5 ft around low water. Launch before 3:00 AM.
Next 7 days
October calendar →| Day | Tide 1 | Tide 2 | Tide 3 | Tide 4 | Range, ft |
|---|---|---|---|---|---|
| TodayTue 20 | L4:11a0.5 | H10:44a5.0 | L4:58p2.1 | H9:31p5.0 | 4.5 |
| WedOct 21 | L4:56a0.5 | H11:10a5.3 | L5:40p1.7 | H10:33p5.1 | 4.8 |
| ThuOct 22 | L5:34a0.6 | H11:34a5.6 | L6:17p1.2 | H11:30p5.2 | 5.0 |
| FriOct 23 | L6:10a0.7 | H11:59a6.0 | L6:54p0.7 | 5.3 | |
| SatOct 24 | H12:24a5.3 | L6:45a1.0 | H12:26p6.3 | L7:31p0.2 | 6.1 |
| SunOct 25 | H1:18a5.3 | L7:20a1.3 | H12:54p6.7 | L8:10p−0.3 | 6.9 |
| MonOct 26 | H2:12a5.3 | L7:57a1.6 | H1:26p6.9 | L8:53p−0.6 | 7.6 spring tide |
Spring tides Monday. Lows drop to −0.6 ft, the best shelling days this week. Spring and neap tides
Tide predictions and observations: NOAA National Ocean Service, Center for Operational Oceanographic Products and Services (CO-OPS), station 9415344.
Nearby stations
Currents
Petaluma River entrance
- Slack3:58 AM
- Max flood7:34 AM 0.7 kn
- Slack10:27 AM
- Max ebb12:29 PM 0.6 kn
- Slack4:14 PM
- Max flood6:34 PM 0.5 kn
- Slack9:15 PM
- Max ebb11:51 PM 1.0 kn
Current predictions for Petaluma River entrance, 5 mi away. Currents near inlets can be strong. Not for navigation.
Station details
- Datum
- Mean lower low water
- Predictions
- NOAA subordinate, from San Francisco, San Francisco Bay
- Live gauge
- None
- Coordinates
- 38.162° N, 122.550° W
- Time zone
- Pacific, UTC−7
- Station ID
- NOAA 9415344
About the tides at Hog Island
Tides here are mixed. On average the two daily highs differ by 1.0 ft, so check which low is the lower one before you head out. The pattern follows the reference station at San Francisco, San Francisco Bay. The average range is about 4.6 ft. Spring tides add a little more at both ends. The next spring tides peak on October 28, with a range of 8.0 ft. Neap tides follow on October 30, when the range shrinks to 4.0 ft. In the next 12 months the highest predicted tide here is 7.7 ft on December 24, and the lowest is −1.4 ft on December 24.
Hog Island is a subordinate station. NOAA predicts its tides by adjusting San Francisco, San Francisco Bay: highs come about 107 min and lows about 156 min later than there. NOAA measured the tide here from 1979 to 1980 to set up these predictions. The nearest other station is Petaluma River entrance, 4 mi away, where high tide comes about 24 min earlier. For tidal currents, see Petaluma River entrance.
Predictions are based on San Francisco, San Francisco Bay.
Tide predictions and water levels from NOAA CO-OPS. For planning only, not for navigation. Real water levels can differ because of wind, air pressure and river flow. Always check conditions on site.