Alcatraz Island tide times

Alcatraz Island, CAAlcatraz IslandNOAA 9414792Wednesday, September 30 · PDTWed Sep 30Predictions onlyChange station
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Today at Alcatraz Island the next low tide is at 9:18 PM (−0.3 ft) and the next high tide is at 2:24 PM (6.3 ft). Tomorrow's first low is at 8:54 AM. Spring tides peak today, so expect bigger highs and lower lows.

Estimated now
4.9 ft ↑
Rising 0.9 ft per hour
Next high
2:24 PM
In 2 h 44 min · 6.3 ft
Next low
9:18 PM
In 9 h 38 min · −0.3 ft
Tide range today
6.6 ft
Spring tides Wednesday
Predictions only. No live gauge at this station.

Today's tide

Estimated curve between high and low timesNightHeight above MLLW
−2 ft0 ft2 ft4 ft6 ftNOW 11:393:25 AMHigh · 4.7 ft8:06 AMLow · 2.7 ft2:24 PMHigh · 6.3 ft9:18 PMLow · −0.3 ft
Tide chart for Alcatraz Island, today. High 4.7 ft at 3:25 AM, low 2.7 ft at 8:06 AM, high 6.3 ft at 2:24 PM, low −0.3 ft at 9:18 PM.

Heights and times are estimated from the reference station using NOAA offsets. Only the high and low points are official; the curve between them is drawn by us.

Today's tides

ft above MLLW
  • High3:25 AM4.7 ft
  • Low8:06 AM2.7 ft
  • High2:24 PM6.3 ft
  • Low9:18 PM−0.3 ft
Tide times for Alcatraz Island
TideTimeHeight
High3:25 AM4.7 ft
Low8:06 AM2.7 ft
High2:24 PM6.3 ft
Low9:18 PM−0.3 ft
Sunrise
7:05 AM
First light 6:39
Sunset
6:56 PM
Last light 7:22
Moon
81%
Waning gibbous
Tide range
6.6 ft
Spring tides Wed

Best windows today

Plan the week →
  • Fishing
    6:00 to 9:00 PM

    Today's best window (6:00 to 7:00 AM) has passed. Dawn light with the outgoing tide around the 8:06 AM low. Second window 7:00 to 8:00 PM.

  • Tidepools & shelling
    No daylight low today

    No daylight low today.

  • Surfing
    Next: Thu 9:00 AM to 12:00 PM
    Earlier today: 8:00 to 11:00 AM

    Today's best window (8:00 to 11:00 AM) has passed.

  • Shallow boat launch
    Avoid 7:00 PM to 12:00 AM

    Under 1.5 ft around low water. Launch before 7:00 PM.

Plan the week

Moving water around the turn often fishes best. Local species and bait matter more than any chart.

Next 7 days

September calendar →
High and low tides for the next 7 days, heights in ft
DayTide 1Tide 2Tide 3Tide 4Range, ft
TodayWed 30H3:25a4.7L8:06a2.7H2:24p6.3L9:18p−0.36.6 spring tide
ThuOct 1H4:38a4.4L8:54a3.1H3:12p6.2L10:22p−0.26.4 spring tide
FriOct 2H6:01a4.3L9:59a3.4H4:12p6.0L11:35p−0.16.1 spring tide
SatOct 3H7:25a4.4L11:30a3.5H5:25p5.82.2
SunOct 4L12:52a−0.1H8:30a4.7L1:06p3.3H6:46p5.65.7
MonOct 5L2:00a−0.1H9:18a5.0L2:21p2.8H8:03p5.65.7
TueOct 6L2:56a−0.1H9:58a5.3L3:20p2.1H9:12p5.65.6

Spring tides Wednesday to Friday. Lows drop to −0.3 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 9414792.

Nearby stations

Currents

Alcatraz Island, 0.5 mile north of

  • Current predictions are delayed. Try again soon.

Current predictions for Alcatraz Island, 0.5 mile north of, 0.6 mi away. Currents near inlets can be strong. Not for navigation.

Station details

Datum
Mean lower low water
Predictions
NOAA, from this station's own tide records
Live gauge
None
Coordinates
37.827° N, 122.417° W
Time zone
Pacific, UTC−7
Station ID
NOAA 9414792

About the tides at Alcatraz Island

Alcatraz Island has a mixed tide. The two daily highs, and especially the two lows, can differ a lot in height. The average range is about 4.0 ft. Spring tides add a little more at both ends. The next spring tides peak today, with a range of 6.6 ft. Neap tides follow on Saturday, when the range shrinks to 2.2 ft.

Alcatraz Island is a subordinate station, so NOAA publishes only its high and low times and heights. The nearest other station is San Francisco, 1 mi away. For tidal currents, see Alcatraz Island, 0.5 mile north of.

Height unitsftmAdd this tide widget to your site. It's free.Week plannerPrintable September calendar

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.