Alcatraz Island, San Francisco Bay Sea Conditions table showing wave height, swell direction and period.
High and low tide times are also provided on the table along with the moon phase and forecast weather. Sunrise today is at — and sunset is at 05:45 PM.
Days 1–4 Weather SummaryHeavy rain (total 21mm), heaviest during Sun afternoon. Cool air temperatures (max 15°C on Sun morning, min 10°C on Fri night). Winds increasing (calm on Fri night, fresh winds from the S by Sun afternoon). | Days 5–7 Weather SummaryHeavy rain (total 21mm), heaviest during Mon night. Cool air temperatures (max 12°C on Mon afternoon, min 6°C on Tue night). Winds decreasing (fresh winds from the W on Mon night, calm by Wed night). | Days 8–10 Weather SummaryMostly dry. Very mild (max 12°C on Sat afternoon, min 5°C on Thu night). Wind will be generally light. | Days 11–13 Weather SummaryMostly dry. Very mild (max 17°C on Mon afternoon, min 8°C on Sun night). Wind will be generally light. | ||||||||||||||||||||||||||||||||||||||||||||
Fri 13 | Saturday 14 | Sunday 15 | Monday 16 | Tuesday 17 | Wednesday 18 | Thursday 19 | Friday 20 | Saturday 21 | Sunday 22 | Monday 23 | Tuesday 24 | Wednesday 25 | Thursday 26 | Friday 27 | Saturday 28 | ||||||||||||||||||||||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
Wave Height Map |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | |||||||||||||||||||||||||||||||
High Tide | 10:51PM1.37m | 9:03AM1.79m | 11:17PM1.41m | 9:47AM1.83m | 11:43PM1.45m | 10:29AM1.83m | 00:08AM1.50m | 11:11AM1.81m | 00:33AM1.57m | 11:54AM1.75m | 00:59AM1.64m | 12:40PM1.65m | 1:27AM1.71m | 1:32PM1.51m | 1:57AM1.77m | 2:32PM1.36m | 2:33AM1.82m | 3:49PM1.22m | 3:16AM1.84m | 5:29PM1.14m | 4:10AM1.83m | 7:15PM1.18m | 8:33PM1.28m | 9:26PM1.38m | 7:43AM1.86m | ||||||||||||||||||||||
Low Tide | 3:37PM-0.04m | 3:21AM0.94m | 4:12PM-0.11m | 4:00AM0.85m | 4:44PM-0.16m | 4:36AM0.76m | 5:15PM-0.17m | 5:13AM0.66m | 5:45PM-0.14m | 5:51AM0.54m | 6:15PM-0.06m | 6:33AM0.43m | 6:46PM0.08m | 7:19AM0.32m | 7:20PM0.25m | 8:10AM0.23m | 7:56PM0.46m | 9:09AM0.16m | 8:37PM0.67m | 10:18AM0.11m | 9:31PM0.86m | 11:36AM0.05m | 10:51PM1.00m | 12:55PM-0.04m | 00:28AM1.02m | 2:02PM-0.13m | 1:47AM0.95m | 2:58PM-0.21m | |||||||||||||||||||
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clear | some clouds | cloudy | cloudy | light rain | cloudy | mod rain | mod rain | light rain | light rain | mod rain | light rain | light rain | rain shwrs | clear | clear | some clouds | clear | clear | clear | clear | clear | clear | clear | clear | clear | clear | clear | clear | clear | cloudy | some clouds | clear | clear | clear | clear | clear | clear | clear | some clouds | some clouds | some clouds | some clouds | cloudy | cloudy | cloudy | mod rain | |
km/h | |||||||||||||||||||||||||||||||||||||||||||||||
— | — | — | — | 1 | — | 9 | 8 | 3 | 1 | 9 | 5 | 2 | 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 8 | |
max°C | 13 | 11 | 13 | 13 | 13 | 15 | 13 | 11 | 11 | 12 | 11 | 10 | 10 | 9 | 10 | 11 | 9 | 9 | 10 | 8 | 9 | 11 | 10 | 10 | 12 | 9 | 12 | 15 | 12 | 14 | 17 | 14 | 15 | 16 | 13 | 15 | 16 | 12 | 15 | 15 | 12 | 16 | 16 | 13 | 15 | 15 | 14 |
Moonrise | — | — | 5:33 | — | — | 6:10 | — | — | 6:41 | — | — | 7:09 | — | — | 7:34 | — | — | 7:59 | — | — | 8:24 | — | — | 8:51 | — | — | 9:22 | — | — | 10:00 | — | — | 10:46 | — | — | 11:43 | — | — | 12:49 | — | — | 2:01 | — | — | — | 3:14 | — |
Moonset | — | — | — | 3:02 | — | — | 4:08 | — | — | 5:15 | — | — | 6:21 | — | — | 7:28 | — | — | 8:36 | — | — | — | 9:45 | — | — | 10:57 | — | — | — | 12:11 | — | — | 1:25 | — | — | 2:35 | — | — | 3:38 | — | — | 4:31 | — | — | 5:14 | — | — |
 | — | — | 7:00 | — | — | 6:58 | — | — | 6:56 | — | — | 6:56 | — | — | 6:54 | — | — | 6:54 | — | — | 6:52 | — | — | 6:50 | — | — | 6:50 | — | — | 6:48 | — | — | 6:47 | — | — | 6:46 | — | — | 6:45 | — | — | 6:43 | — | — | 6:41 | — | — |
 | 5:45 | — | — | 5:46 | — | — | 5:47 | — | — | 5:49 | — | — | 5:51 | — | — | 5:52 | — | — | 5:52 | — | — | 5:53 | — | — | 5:54 | — | — | 5:55 | — | — | 5:57 | — | — | 5:58 | — | — | 5:59 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — |
Today's sea temperature in Alcatraz Island, San Francisco Bay is 13.6° C (Statistics for 13 Feb 1981-2005 – mean: 12.1 max: 13.9 min: 10.5°C) | |||||||||||||||||||||||||||||||||||||||||||||||
Nearest