California tide station
Alcatraz Island tide times
Today, Sunday, October 18, 2026: high tide at 8:01 AM (4.4 ft) and 5:35 PM (4.8 ft); low tide at 12:43 PM (3.5 ft). Water temperature 63.9 F at buoy RCMC1 (6.7 mi away).
High tide▲
8:01AM
4.4FT MLLW
high
Low tide▼
12:43PM
3.5FT MLLW
low
High tide▲
5:35PM
4.8FT MLLW
high
Water temp°F
63.9
17.7C
buoy RCMC1, 6.7 mi
predicted height above MLLWnightnow (build time; your browser updates it)
As of 2:20 AM the tide is rising toward high tide at 8:01 AM (4.4 ft).
First Quarter 52% litSunrise 7:21 AMSunset 6:28 PMDaylight 11h 06mPDT
- High tide at Alcatraz Island, California on is at 8:01 AM (4.4 ft above MLLW) and 5:35 PM (4.8 ft above MLLW).
- Low tide at Alcatraz Island on is at 12:43 PM (3.5 ft).
- Today's tidal range at Alcatraz Island is 1.2 ft (highest high 4.8 ft, lowest low 3.5 ft).
- The nearest NOAA water temperature to Alcatraz Island is 63.9 F at buoy RCMC1 (6.7 mi away), as of .
- Sunrise 7:21 AM, sunset 6:28 PM (PDT); moon first quarter, 52% illuminated.
- Predictions are NOAA CO-OPS tide predictions for station 9414792 (subordinate station), heights above MLLW.
Next 7 days at Alcatraz Island
| Date | Tide 1 | Tide 2 | Tide 3 | Tide 4 | Sunrise | Sunset | Moon |
|---|---|---|---|---|---|---|---|
| Sun Oct 18today | 8:01 AM4.4 ft | 12:43 PM3.5 ft | 5:35 PM4.8 ft | 7:21 AM | 6:28 PM | 52% | |
| Mon Oct 19 | 1:00 AM0.7 ft | 8:41 AM4.5 ft | 1:49 PM3.2 ft | 6:49 PM4.7 ft | 7:22 AM | 6:27 PM | 62% |
| Tue Oct 20 | 1:53 AM0.6 ft | 9:11 AM4.7 ft | 2:40 PM2.7 ft | 7:58 PM4.7 ft | 7:23 AM | 6:25 PM | 72% |
| Wed Oct 21 | 2:38 AM0.6 ft | 9:37 AM5.0 ft | 3:22 PM2.1 ft | 9:00 PM4.8 ft | 7:24 AM | 6:24 PM | 81% |
| Thu Oct 22 | 3:16 AM0.7 ft | 10:01 AM5.3 ft | 3:59 PM1.5 ft | 9:57 PM4.8 ft | 7:25 AM | 6:23 PM | 89% |
| Fri Oct 23 | 3:52 AM0.9 ft | 10:26 AM5.6 ft | 4:36 PM0.9 ft | 10:51 PM4.9 ft | 7:26 AM | 6:22 PM | 95% |
| Sat Oct 24 | 4:27 AM1.3 ft | 10:53 AM5.9 ft | 5:13 PM0.2 ft | 11:45 PM5.0 ft | 7:27 AM | 6:20 PM | 98% |
Water temperature near Alcatraz Island
63.9 F (17.7 C)
NDBC buoy RCMC1 (9414863 - Richmond, CA), 6.7 mi away, observed 08:48 UTC October 18, 2026
Water temperature is the nearest NOAA reading to Alcatraz Island, not a measurement at the tide gauge itself (this station has no water-temperature sensor). See water temperature by state for every sensor and buoy.
Tide tables
October 2026 tide table
| Date | Tide 1 | Tide 2 | Tide 3 | Tide 4 | Sunrise | Sunset | Moon |
|---|---|---|---|---|---|---|---|
| Thu Oct 1 | 7:06 AM | 6:53 PM | 71% | ||||
| Fri Oct 2 | 7:07 AM | 6:51 PM | 61% | ||||
| Sat Oct 3 | 7:07 AM | 6:50 PM | 51% | ||||
| Sun Oct 4 | 7:08 AM | 6:48 PM | 40% | ||||
| Mon Oct 5 | 7:09 AM | 6:47 PM | 30% | ||||
| Tue Oct 6 | 7:10 AM | 6:45 PM | 21% | ||||
| Wed Oct 7 | 7:11 AM | 6:44 PM | 13% | ||||
| Thu Oct 8 | 7:12 AM | 6:42 PM | 7% | ||||
| Fri Oct 9 | 7:13 AM | 6:41 PM | 2% | ||||
| Sat Oct 10 | 7:14 AM | 6:39 PM | 0% | ||||
| Sun Oct 11 | 7:15 AM | 6:38 PM | 0% | ||||
| Mon Oct 12 | 7:16 AM | 6:36 PM | 3% | ||||
| Tue Oct 13 | 7:17 AM | 6:35 PM | 7% | ||||
| Wed Oct 14 | 7:18 AM | 6:34 PM | 14% | ||||
| Thu Oct 15 | 7:18 AM | 6:32 PM | 22% | ||||
| Fri Oct 16 | 5:46 AM4.2 ft | 9:46 AM3.7 ft | 3:25 PM5.2 ft | 10:50 PM0.5 ft | 7:19 AM | 6:31 PM | 31% |
| Sat Oct 17 | 7:02 AM4.2 ft | 11:14 AM3.7 ft | 4:24 PM4.9 ft | 11:56 PM0.6 ft | 7:20 AM | 6:29 PM | 41% |
| Sun Oct 18today | 8:01 AM4.4 ft | 12:43 PM3.5 ft | 5:35 PM4.8 ft | 7:21 AM | 6:28 PM | 52% | |
| Mon Oct 19 | 1:00 AM0.7 ft | 8:41 AM4.5 ft | 1:49 PM3.2 ft | 6:49 PM4.7 ft | 7:22 AM | 6:27 PM | 62% |
| Tue Oct 20 | 1:53 AM0.6 ft | 9:11 AM4.7 ft | 2:40 PM2.7 ft | 7:58 PM4.7 ft | 7:23 AM | 6:25 PM | 72% |
| Wed Oct 21 | 2:38 AM0.6 ft | 9:37 AM5.0 ft | 3:22 PM2.1 ft | 9:00 PM4.8 ft | 7:24 AM | 6:24 PM | 81% |
| Thu Oct 22 | 3:16 AM0.7 ft | 10:01 AM5.3 ft | 3:59 PM1.5 ft | 9:57 PM4.8 ft | 7:25 AM | 6:23 PM | 89% |
| Fri Oct 23 | 3:52 AM0.9 ft | 10:26 AM5.6 ft | 4:36 PM0.9 ft | 10:51 PM4.9 ft | 7:26 AM | 6:22 PM | 95% |
| Sat Oct 24 | 4:27 AM1.3 ft | 10:53 AM5.9 ft | 5:13 PM0.2 ft | 11:45 PM5.0 ft | 7:27 AM | 6:20 PM | 98% |
| Sun Oct 25 | 5:02 AM1.6 ft | 11:21 AM6.2 ft | 5:52 PM-0.3 ft | 7:28 AM | 6:19 PM | 100% | |
| Mon Oct 26 | 12:39 AM5.0 ft | 5:39 AM2.1 ft | 11:53 AM6.5 ft | 6:35 PM-0.8 ft | 7:29 AM | 6:18 PM | 99% |
| Tue Oct 27 | 1:35 AM5.0 ft | 6:19 AM2.5 ft | 12:29 PM6.6 ft | 7:20 PM-1.0 ft | 7:30 AM | 6:17 PM | 96% |
| Wed Oct 28 | 2:33 AM4.9 ft | 7:02 AM2.9 ft | 1:10 PM6.7 ft | 8:10 PM-1.1 ft | 7:31 AM | 6:15 PM | 91% |
| Thu Oct 29 | 3:35 AM4.7 ft | 7:50 AM3.2 ft | 1:57 PM6.5 ft | 9:05 PM-1.0 ft | 7:32 AM | 6:14 PM | 85% |
| Fri Oct 30 | 4:41 AM4.7 ft | 8:50 AM3.4 ft | 2:53 PM6.2 ft | 10:07 PM-0.7 ft | 7:33 AM | 6:13 PM | 76% |
| Sat Oct 31 | 5:49 AM4.7 ft | 10:08 AM3.4 ft | 3:58 PM5.8 ft | 11:14 PM-0.4 ft | 7:34 AM | 6:12 PM | 67% |
November 2026 tide table
| Date | Tide 1 | Tide 2 | Tide 3 | Tide 4 | Sunrise | Sunset | Moon |
|---|---|---|---|---|---|---|---|
| Sun Nov 1 | 5:54 AM4.8 ft | 10:42 AM3.2 ft | 4:13 PM5.4 ft | 11:22 PM-0.1 ft | 6:36 AM | 5:11 PM | 56% |
| Mon Nov 2 | 6:49 AM5.0 ft | 12:09 PM2.7 ft | 5:35 PM5.0 ft | 6:37 AM | 5:10 PM | 45% | |
| Tue Nov 3 | 12:24 AM0.1 ft | 7:35 AM5.3 ft | 1:19 PM2.1 ft | 6:57 PM4.8 ft | 6:38 AM | 5:09 PM | 35% |
| Wed Nov 4 | 1:18 AM0.5 ft | 8:14 AM5.6 ft | 2:17 PM1.4 ft | 8:11 PM4.7 ft | 6:39 AM | 5:08 PM | 25% |
| Thu Nov 5 | 2:05 AM0.9 ft | 8:49 AM5.9 ft | 3:06 PM0.7 ft | 9:17 PM4.7 ft | 6:40 AM | 5:07 PM | 16% |
| Fri Nov 6 | 2:47 AM1.3 ft | 9:22 AM6.1 ft | 3:50 PM0.2 ft | 10:17 PM4.7 ft | 6:41 AM | 5:06 PM | 9% |
| Sat Nov 7 | 3:27 AM1.8 ft | 9:52 AM6.2 ft | 4:29 PM-0.2 ft | 11:12 PM4.7 ft | 6:42 AM | 5:05 PM | 4% |
| Sun Nov 8 | 4:05 AM2.3 ft | 10:20 AM6.2 ft | 5:06 PM-0.4 ft | 6:43 AM | 5:04 PM | 1% | |
| Mon Nov 9 | 12:04 AM4.7 ft | 4:43 AM2.7 ft | 10:49 AM6.2 ft | 5:42 PM-0.5 ft | 6:44 AM | 5:03 PM | 0% |
| Tue Nov 10 | 12:53 AM4.7 ft | 5:20 AM3.0 ft | 11:18 AM6.1 ft | 6:18 PM-0.5 ft | 6:45 AM | 5:02 PM | 1% |
| Wed Nov 11 | 1:41 AM4.6 ft | 5:59 AM3.3 ft | 11:49 AM5.9 ft | 6:55 PM-0.4 ft | 6:46 AM | 5:01 PM | 5% |
| Thu Nov 12 | 2:29 AM4.6 ft | 6:39 AM3.5 ft | 12:24 PM5.7 ft | 7:35 PM-0.3 ft | 6:47 AM | 5:00 PM | 10% |
| Fri Nov 13 | 3:18 AM4.5 ft | 7:24 AM3.6 ft | 1:03 PM5.5 ft | 8:18 PM-0.1 ft | 6:48 AM | 5:00 PM | 18% |
| Sat Nov 14 | 4:10 AM4.4 ft | 8:19 AM3.6 ft | 1:48 PM5.2 ft | 9:06 PM0.1 ft | 6:49 AM | 4:59 PM | 26% |
| Sun Nov 15 | 5:01 AM4.4 ft | 9:32 AM3.6 ft | 2:41 PM4.9 ft | 9:57 PM0.3 ft | 6:50 AM | 4:58 PM | 36% |
| Mon Nov 16 | 5:47 AM4.5 ft | 10:56 AM3.4 ft | 3:45 PM4.5 ft | 10:50 PM0.5 ft | 6:51 AM | 4:57 PM | 47% |
| Tue Nov 17 | 6:26 AM4.7 ft | 12:07 PM3.0 ft | 4:58 PM4.3 ft | 11:42 PM0.7 ft | 6:53 AM | 4:57 PM | 57% |
| Wed Nov 18 | 6:59 AM4.9 ft | 1:03 PM2.4 ft | 6:17 PM4.1 ft | 6:54 AM | 4:56 PM | 68% | |
| Thu Nov 19 | 12:30 AM1.0 ft | 7:29 AM5.3 ft | 1:50 PM1.7 ft | 7:34 PM4.1 ft | 6:55 AM | 4:56 PM | 77% |
| Fri Nov 20 | 1:15 AM1.3 ft | 7:59 AM5.6 ft | 2:31 PM0.9 ft | 8:45 PM4.2 ft | 6:56 AM | 4:55 PM | 85% |
| Sat Nov 21 | 1:58 AM1.7 ft | 8:29 AM6.0 ft | 3:12 PM0.2 ft | 9:49 PM4.4 ft | 6:57 AM | 4:54 PM | 92% |
| Sun Nov 22 | 2:41 AM2.1 ft | 9:02 AM6.4 ft | 3:53 PM-0.5 ft | 10:48 PM4.7 ft | 6:58 AM | 4:54 PM | 97% |
| Mon Nov 23 | 3:25 AM2.5 ft | 9:39 AM6.7 ft | 4:36 PM-1.1 ft | 11:45 PM4.8 ft | 6:59 AM | 4:53 PM | 99% |
| Tue Nov 24 | 4:10 AM2.8 ft | 10:19 AM6.9 ft | 5:21 PM-1.5 ft | 7:00 AM | 4:53 PM | 100% | |
| Wed Nov 25 | 12:40 AM4.9 ft | 4:57 AM3.0 ft | 11:03 AM7.0 ft | 6:10 PM-1.7 ft | 7:01 AM | 4:53 PM | 98% |
| Thu Nov 26 | 1:34 AM4.9 ft | 5:48 AM3.2 ft | 11:52 AM7.0 ft | 7:00 PM-1.6 ft | 7:02 AM | 4:52 PM | 94% |
| Fri Nov 27 | 2:28 AM4.9 ft | 6:44 AM3.2 ft | 12:45 PM6.7 ft | 7:53 PM-1.4 ft | 7:03 AM | 4:52 PM | 88% |
| Sat Nov 28 | 3:23 AM4.9 ft | 7:49 AM3.2 ft | 1:42 PM6.2 ft | 8:48 PM-1.0 ft | 7:04 AM | 4:52 PM | 80% |
| Sun Nov 29 | 4:17 AM5.0 ft | 9:07 AM3.0 ft | 2:46 PM5.6 ft | 9:45 PM-0.5 ft | 7:05 AM | 4:51 PM | 71% |
| Mon Nov 30 | 5:10 AM5.2 ft | 10:33 AM2.7 ft | 3:59 PM5.0 ft | 10:42 PM0.1 ft | 7:06 AM | 4:51 PM | 61% |
How these predictions are made
Alcatraz Island is a subordinate station: NOAA derives its tides from the reference station SAN FRANCISCO (Golden Gate) by applying fixed offsets.
High tide time
+0h 14m
relative to SAN FRANCISCO (Golden Gate)
Low tide time
+0h 18m
relative to reference
High tide height
+0.00 ft
difference
Low tide height
+0.00 ft
difference
Nearby tide stations
- San Francisco, North Point, Pier 411.2 mi · next high 8:00 AM
- Angel Island, East Garrison2.5 mi · next high 8:03 AM
- Angel Island (west side)2.7 mi · next high 8:00 AM
- SAN FRANCISCO (Golden Gate)3.0 mi · next high 7:47 AM
- Rincon Point, Pier 22 1/23.0 mi · next high 7:56 AM
- Yerba Buena Island3.3 mi · next high 8:12 AM
Questions
What time is high tide at Alcatraz Island today?
High tide at Alcatraz Island, California on Sunday, October 18, 2026 is at 8:01 AM (4.4 ft above MLLW) and 5:35 PM (4.8 ft above MLLW), NOAA prediction, local time.
What time is low tide at Alcatraz Island today?
Low tide at Alcatraz Island on Sunday, October 18, 2026 is at 12:43 PM (3.5 ft).
What is the water temperature at Alcatraz Island?
The nearest NOAA water-temperature reading to Alcatraz Island is 63.9 F at buoy RCMC1 (6.7 mi away), as of October 18, 2026.
Not for navigation. Predictions do not include weather; wind and pressure can move the real water level by a foot or more. Source: NOAA CO-OPS station 9414792.