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 06:50 AM and sunset is at 04:58 PM.
Days 1–3 Weather SummaryMostly dry. Cool air temperatures (max 15°C on Thu morning, min 9°C on Thu night). Wind will be generally light. | Days 4–6 Weather SummaryMostly dry. Cool air temperatures (max 14°C on Mon afternoon, min 9°C on Sun night). Wind will be generally light. | Days 7–9 Weather SummaryModerate rain (total 10mm), heaviest on Fri night. Very mild (max 18°C on Thu afternoon, min 10°C on Wed morning). Wind will be generally light. | Days 10–12 Weather SummaryModerate rain (total 16mm), heaviest on Sun night. Very mild (max 14°C on Sun morning, min 11°C on Sat night). Winds decreasing (fresh winds from the S on Sun afternoon, calm by Mon afternoon). | |||||||||||||||||||||||||||||||||
Thursday 14 | Friday 15 | Saturday 16 | Sunday 17 | Monday 18 | Tuesday 19 | Wednesday 20 | Thursday 21 | Friday 22 | Saturday 23 | Sunday 24 | Monday 25 | |||||||||||||||||||||||||
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 | 9:45AM2.05m | 11:16PM1.52m | 10:22AM2.11m | 00:16AM1.52m | 11:01AM2.12m | 1:15AM1.51m | 11:43AM2.07m | 2:13AM1.49m | 12:28PM1.98m | 3:13AM1.47m | 1:18PM1.86m | 4:13AM1.46m | 2:11PM1.71m | 5:12AM1.47m | 3:12PM1.56m | 6:05AM1.50m | 4:22PM1.42m | 6:50AM1.55m | 5:39PM1.30m | 7:27AM1.60m | 6:58PM1.24m | 7:58AM1.66m | 8:13PM1.22m | |||||||||||||
Low Tide | 4:26PM-0.29m | 4:06AM0.61m | 5:12PM-0.44m | 4:53AM0.73m | 5:59PM-0.50m | 5:41AM0.85m | 6:47PM-0.48m | 6:33AM0.94m | 7:37PM-0.39m | 7:31AM1.00m | 8:30PM-0.27m | 8:38AM1.03m | 9:26PM-0.13m | 9:56AM1.01m | 10:24PM0.01m | 11:17AM0.93m | 11:20PM0.14m | 12:29PM0.79m | 00:13AM0.26m | 1:29PM0.62m | 1:00AM0.38m | 2:19PM0.45m | 1:44AM0.50m | |||||||||||||
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 |  |  | | |  | | | |  | | | | | | | | | | | | | |  | | |  |  | | | | |  | |  | | |
clear | some clouds | some clouds | clear | clear | clear | some clouds | clear | clear | cloudy | cloudy | clear | clear | clear | clear | some clouds | cloudy | clear | clear | clear | some clouds | cloudy | some clouds | cloudy | some clouds | cloudy | mod rain | light rain | cloudy | clear | clear | some clouds | rain shwrs | light rain | rain shwrs | some clouds | |
km/h | ||||||||||||||||||||||||||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 10 | 2.0 | — | — | — | — | 11 | 2.0 | 1.0 | — | |
max°C | 15 | 14 | 11 | 12 | 13 | 10 | 12 | 12 | 11 | 12 | 12 | 12 | 13 | 14 | 11 | 12 | 13 | 12 | 14 | 16 | 14 | 16 | 18 | 16 | 17 | 17 | 15 | 13 | 13 | 12 | 14 | 14 | 13 | 14 | 13 | 13 |
Moonrise | — | 4:03 | — | — | 4:41 | — | — | 5:27 | — | — | 6:23 | — | — | 7:26 | — | — | 8:34 | — | — | — | 9:41 | — | — | 10:47 | — | — | 11:49 | — | — | — | 12:48 | — | — | 1:46 | — | — |
Moonset | 5:24 | — | — | 6:43 | — | — | 8:01 | — | — | 9:15 | — | — | 10:20 | — | — | 11:12 | — | — | 11:54 | — | — | 12:28 | — | — | 12:55 | — | — | 1:18 | — | — | 1:40 | — | — | 2:00 | — | — |
 | 6:50 | — | — | 6:50 | — | — | 6:52 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — | 6:56 | — | — | 6:58 | — | — | 6:58 | — | — | 7:00 | — | — | 7:01 | — | — |
 | — | 4:58 | — | — | 4:57 | — | — | 4:55 | — | — | 4:55 | — | — | 4:54 | — | — | 4:53 | — | — | 4:53 | — | — | 4:52 | — | — | 4:52 | — | — | 4:52 | — | — | 4:52 | — | — | 4:52 | — |
Today's sea temperature in Alcatraz Island, San Francisco Bay is 14.2 °C (Statistics for 14 Nov 1981-2005 – mean: 13.4 max: 16.1 min: 11.5°C) | ||||||||||||||||||||||||||||||||||||
Forecast update inUpdates in hr min sUpdate imminent
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