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 —.
Days 1–4 Weather SummaryModerate rain (total 14mm), heaviest on Thu night. Cool air temperatures (max 15°C on Fri morning, min 9°C on Tue night). Wind will be generally light. | Days 5–7 Weather SummaryLight rain (total 6mm), mostly falling on Sun morning. Cool air temperatures (max 15°C on Sat morning, min 9°C on Sun night). Wind will be generally light. | Days 8–10 Weather SummaryMostly dry. Very mild (max 14°C on Thu afternoon, min 7°C on Mon night). Wind will be generally light. | Days 11–13 Weather SummaryMostly dry. Very mild (max 14°C on Fri morning, min 8°C on Fri night). Wind will be generally light. | |||||||||||||||||||||||||||||||||
Wednesday 25 | Thursday 26 | Friday 27 | Saturday 28 | Sunday 29 | Monday 30 | Tuesday 31 | Wednesday 1 | Thursday 2 | Friday 3 | Saturday 4 | Sun 5 | |||||||||||||||||||||||||
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 | |
Wave Height Map |  |  |  |  |  |  |  |  |  |  |  |  |  | |||||||||||||||||||||||
High Tide | 7:58PM1.09m | 7:23AM1.73m | 9:18PM1.15m | 7:58AM1.78m | 10:20PM1.23m | 8:34AM1.82m | 11:09PM1.30m | 9:12AM1.87m | 11:52PM1.36m | 9:51AM1.91m | 00:30AM1.40m | 10:31AM1.94m | 1:07AM1.43m | 11:12AM1.96m | 1:40AM1.45m | 11:54AM1.96m | 2:16AM1.48m | 12:40PM1.90m | 2:52AM1.53m | 1:29PM1.77m | 3:29AM1.60m | 2:25PM1.61m | 4:07AM1.68m | 3:33PM1.41m | ||||||||||||
Low Tide | 00:44AM0.72m | 2:30PM0.23m | 1:35AM0.84m | 3:12PM0.07m | 2:25AM0.93m | 3:49PM-0.06m | 3:11AM0.99m | 4:25PM-0.17m | 3:53AM1.03m | 5:01PM-0.25m | 4:33AM1.04m | 5:38PM-0.31m | 5:13AM1.04m | 6:15PM-0.35m | 5:54AM1.00m | 6:54PM-0.34m | 6:42AM0.96m | 7:33PM-0.28m | 7:36AM0.90m | 8:14PM-0.17m | 8:39AM0.82m | 8:57PM-0.01m | 9:51AM0.69m | |||||||||||||
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 |  |  |  | | |  | | |  | |  |  |  |  |  | | | | | | | | | | | | | | | | | | | | | |
some clouds | some clouds | cloudy | light rain | some clouds | cloudy | heavy rain | some clouds | cloudy | cloudy | cloudy | light rain | rain shwrs | rain shwrs | clear | clear | clear | clear | clear | some clouds | some clouds | some clouds | some clouds | some clouds | some clouds | some clouds | clear | some clouds | some clouds | clear | clear | clear | clear | clear | some clouds | clear | |
km/h | ||||||||||||||||||||||||||||||||||||
— | — | — | 1.0 | — | — | 13 | — | — | — | — | 1.0 | 1.0 | 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max°C | 11 | 11 | 11 | 11 | 13 | 13 | 14 | 15 | 14 | 14 | 15 | 15 | 14 | 13 | 12 | 11 | 12 | 12 | 9 | 9 | 10 | 9 | 11 | 11 | 11 | 12 | 14 | 13 | 14 | 14 | 10 | 13 | 14 | 11 | 10 | 12 |
Moonrise | — | 2:30 | — | — | 3:31 | — | — | 4:34 | — | — | 5:38 | — | — | 6:40 | — | — | 7:37 | — | — | 8:28 | — | — | 9:10 | — | — | 9:45 | — | — | 10:16 | — | — | 10:42 | — | — | 11:08 | — |
Moonset | 12:45 | 1:09 | — | — | 1:37 | — | — | 2:10 | — | — | 2:51 | — | — | — | 3:41 | — | — | 4:41 | — | — | 5:48 | — | — | 6:59 | — | — | 8:11 | — | — | — | 9:21 | — | — | 10:31 | — | 11:41 |
 | — | 7:22 | — | — | 7:24 | — | — | 7:24 | — | — | 7:24 | — | — | 7:24 | — | — | 7:24 | — | — | 7:24 | — | — | 7:24 | — | — | 7:24 | — | — | 7:24 | — | — | 7:24 | — | — | 7:24 | — |
 | — | — | 4:57 | — | — | 4:57 | — | — | 4:58 | — | — | 4:59 | — | — | 4:59 | — | — | 5:00 | — | — | 5:00 | — | — | 5:00 | — | — | 5:01 | — | — | 5:02 | — | — | 5:04 | — | — | 5:05 |
Today's sea temperature in Alcatraz Island, San Francisco Bay is 12.0 °C (Statistics for 24 Dec 1981-2005 – mean: 12.3 max: 14.9 min: 10.7°C) | ||||||||||||||||||||||||||||||||||||
Forecast update inUpdates in hr min sUpdate imminent
Nearest