tidealmanac

Alcatraz Island, CA tide chart

NOAA station 9414792 · Subordinate station · Datum MLLW · Local time (America/Los_Angeles)

Change stationFull year 2026

Today · Sun, Oct 18

High tideLow tide
  1. High8:01 AM4.4 ft1.33 m
  2. Low12:43 PM3.5 ft1.08 m
  3. High5:35 PM4.8 ft1.45 m

This is a subordinate station: NOAA predicts its highs and lows from a nearby reference station and publishes no curve for it. Nothing is interpolated.

Next high8:41 AM4.5 ft1.38 m · in 11h 15m
Next low1:00 AM0.7 ft0.20 m · in 3h 34m
Range today1.2 ft0.37 m3 predicted tides today
MoonFirstFirst quarter · neap tides

October 2026

Full year
Date1st tide2nd tide3rd tide4th tide
1Thu
4:38 AMHigh · 4.4 ft1.35 m
8:54 AMLow · 3.1 ft0.95 m
3:12 PMHigh · 6.2 ft1.90 m
10:22 PMLow · -0.2 ft-0.06 m
2Fri
6:01 AMHigh · 4.3 ft1.32 m
9:59 AMLow · 3.4 ft1.05 m
4:12 PMHigh · 6.0 ft1.83 m
11:35 PMLow · -0.1 ft-0.03 m
3Sat
7:25 AMHigh · 4.4 ft1.35 m
11:30 AMLow · 3.5 ft1.08 m
5:25 PMHigh · 5.8 ft1.76 m
4Sun
12:52 AMLow · -0.1 ft-0.02 m
8:30 AMHigh · 4.7 ft1.42 m
1:06 PMLow · 3.3 ft1.00 m
6:46 PMHigh · 5.6 ft1.72 m
5Mon
2:00 AMLow · -0.1 ft-0.03 m
9:18 AMHigh · 5.0 ft1.51 m
2:21 PMLow · 2.8 ft0.84 m
8:03 PMHigh · 5.6 ft1.71 m
6Tue
2:56 AMLow · -0.1 ft-0.02 m
9:58 AMHigh · 5.3 ft1.60 m
3:20 PMLow · 2.1 ft0.64 m
9:12 PMHigh · 5.6 ft1.70 m
7Wed
3:43 AMLow · 0.1 ft0.02 m
10:33 AMHigh · 5.5 ft1.69 m
4:12 PMLow · 1.5 ft0.45 m
10:13 PMHigh · 5.5 ft1.69 m
8Thu
4:24 AMLow · 0.3 ft0.11 m
11:05 AMHigh · 5.8 ft1.76 m
4:58 PMLow · 0.9 ft0.28 m
11:09 PMHigh · 5.4 ft1.65 m
9Fri
5:02 AMLow · 0.7 ft0.23 m
11:36 AMHigh · 6.0 ft1.82 m
5:41 PMLow · 0.4 ft0.14 m
10Sat
12:03 AMHigh · 5.3 ft1.60 m
5:37 AMLow · 1.2 ft0.37 m
12:04 PMHigh · 6.1 ft1.85 m
6:21 PMLow · 0.1 ft0.04 m
11Sun
12:54 AMHigh · 5.1 ft1.55 m
6:12 AMLow · 1.7 ft0.53 m
12:32 PMHigh · 6.1 ft1.85 m
7:01 PMLow · -0.1 ft-0.02 m
12Mon
1:46 AMHigh · 4.9 ft1.49 m
6:48 AMLow · 2.3 ft0.69 m
1:00 PMHigh · 6.0 ft1.84 m
7:39 PMLow · -0.1 ft-0.04 m
13Tue
2:38 AMHigh · 4.7 ft1.43 m
7:24 AMLow · 2.7 ft0.83 m
1:28 PMHigh · 5.9 ft1.80 m
8:19 PMLow · 0.0 ft-0.01 m
14Wed
3:33 AMHigh · 4.5 ft1.37 m
8:02 AMLow · 3.1 ft0.96 m
2:00 PMHigh · 5.7 ft1.74 m
9:03 PMLow · 0.1 ft0.03 m
15Thu
4:35 AMHigh · 4.3 ft1.32 m
8:47 AMLow · 3.5 ft1.05 m
2:38 PMHigh · 5.5 ft1.67 m
9:52 PMLow · 0.3 ft0.10 m
16Fri
5:46 AMHigh · 4.2 ft1.29 m
9:46 AMLow · 3.7 ft1.12 m
3:25 PMHigh · 5.2 ft1.59 m
10:50 PMLow · 0.5 ft0.16 m
17Sat
7:02 AMHigh · 4.2 ft1.29 m
11:14 AMLow · 3.7 ft1.13 m
4:24 PMHigh · 5.0 ft1.51 m
11:56 PMLow · 0.6 ft0.19 m
18Sun
8:01 AMHigh · 4.4 ft1.33 m
12:43 PMLow · 3.5 ft1.08 m
5:35 PMHigh · 4.8 ft1.45 m
19Mon
1:00 AMLow · 0.7 ft0.20 m
8:41 AMHigh · 4.5 ft1.38 m
1:49 PMLow · 3.2 ft0.96 m
6:49 PMHigh · 4.7 ft1.42 m
20Tue
1:53 AMLow · 0.6 ft0.19 m
9:11 AMHigh · 4.7 ft1.44 m
2:40 PMLow · 2.7 ft0.82 m
7:58 PMHigh · 4.7 ft1.43 m
21Wed
2:38 AMLow · 0.6 ft0.20 m
9:37 AMHigh · 5.0 ft1.51 m
3:22 PMLow · 2.1 ft0.65 m
9:00 PMHigh · 4.8 ft1.45 m
22Thu
3:16 AMLow · 0.7 ft0.23 m
10:01 AMHigh · 5.3 ft1.60 m
3:59 PMLow · 1.5 ft0.46 m
9:57 PMHigh · 4.8 ft1.48 m
23Fri
3:52 AMLow · 0.9 ft0.29 m
10:26 AMHigh · 5.6 ft1.70 m
4:36 PMLow · 0.9 ft0.26 m
10:51 PMHigh · 4.9 ft1.50 m
24Sat
4:27 AMLow · 1.3 ft0.38 m
10:53 AMHigh · 5.9 ft1.80 m
5:13 PMLow · 0.2 ft0.07 m
11:45 PMHigh · 5.0 ft1.52 m
25Sun
5:02 AMLow · 1.7 ft0.50 m
11:21 AMHigh · 6.2 ft1.90 m
5:52 PMLow · -0.3 ft-0.10 m
26Mon
12:39 AMHigh · 5.0 ft1.52 m
5:39 AMLow · 2.1 ft0.63 m
11:53 AMHigh · 6.5 ft1.98 m
6:35 PMLow · -0.8 ft-0.24 m
27Tue
1:35 AMHigh · 5.0 ft1.51 m
6:19 AMLow · 2.5 ft0.76 m
12:29 PMHigh · 6.6 ft2.03 m
7:20 PMLow · -1.0 ft-0.32 m
28Wed
2:33 AMHigh · 4.9 ft1.48 m
7:02 AMLow · 2.9 ft0.87 m
1:10 PMHigh · 6.7 ft2.03 m
8:10 PMLow · -1.1 ft-0.34 m
29Thu
3:35 AMHigh · 4.7 ft1.45 m
7:50 AMLow · 3.2 ft0.97 m
1:57 PMHigh · 6.5 ft1.99 m
9:05 PMLow · -1.0 ft-0.30 m
30Fri
4:41 AMHigh · 4.6 ft1.42 m
8:50 AMLow · 3.4 ft1.03 m
2:53 PMHigh · 6.2 ft1.90 m
10:07 PMLow · -0.7 ft-0.22 m
31Sat
5:49 AMHigh · 4.7 ft1.42 m
10:08 AMLow · 3.4 ft1.05 m
3:58 PMHigh · 5.8 ft1.78 m
11:14 PMLow · -0.4 ft-0.13 m
Thu14:38 AM4.4 ft1.35 m8:54 AM3.1 ft0.95 m3:12 PM6.2 ft1.90 m10:22 PM-0.2 ft-0.06 mFri26:01 AM4.3 ft1.32 m9:59 AM3.4 ft1.05 m4:12 PM6.0 ft1.83 m11:35 PM-0.1 ft-0.03 mSat37:25 AM4.4 ft1.35 m11:30 AM3.5 ft1.08 m5:25 PM5.8 ft1.76 mSun412:52 AM-0.1 ft-0.02 m8:30 AM4.7 ft1.42 m1:06 PM3.3 ft1.00 m6:46 PM5.6 ft1.72 mMon52:00 AM-0.1 ft-0.03 m9:18 AM5.0 ft1.51 m2:21 PM2.8 ft0.84 m8:03 PM5.6 ft1.71 mTue62:56 AM-0.1 ft-0.02 m9:58 AM5.3 ft1.60 m3:20 PM2.1 ft0.64 m9:12 PM5.6 ft1.70 mWed73:43 AM0.1 ft0.02 m10:33 AM5.5 ft1.69 m4:12 PM1.5 ft0.45 m10:13 PM5.5 ft1.69 mShow the whole month

Heights relative to MLLW; times local to the station. Predictions from NOAA CO-OPS; not for navigation.

Nearby stations

Distance from this station. A nearer station is not necessarily the right one for your shore.
San Francisco, North Point, Pier 41CA · NOAA 9414305 · 1 mi (2 km)Angel Island, East GarrisonCA · NOAA 9414818 · 3 mi (4 km)Angel Island (west side)CA · NOAA 9414817 · 3 mi (4 km)San Francisco (Golden Gate)CA · NOAA 9414290 · 3 mi (5 km)