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 05:54 AM and sunset is at 08:17 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 18°C on Tue afternoon, min 10°C on Sun morning). Wind will be generally light. | Days 7–9 Weather SummaryMostly dry. Warm (max 23°C on Fri morning, min 10°C on Wed night). Wind will be generally light. | Days 10–12 Weather SummaryMostly dry. Very mild (max 19°C on Sat afternoon, min 10°C on Mon night). Wind will be generally light. | |||||||||||||||||||||||||||||||||
Thursday 22 | Friday 23 | Saturday 24 | Sunday 25 | Monday 26 | Tuesday 27 | Wednesday 28 | Thursday 29 | Friday 30 | Saturday 31 | Sunday 1 | Monday 2 | |||||||||||||||||||||||||
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 | 8:14AM1.26m | 8:54PM1.73m | 9:34AM1.28m | 9:29PM1.86m | 10:46AM1.33m | 10:06PM1.98m | 11:52AM1.39m | 10:46PM2.07m | 12:54PM1.43m | 11:29PM2.11m | 1:52PM1.46m | 00:15AM2.10m | 2:48PM1.48m | 1:04AM2.03m | 3:43PM1.47m | 1:55AM1.92m | 4:37PM1.47m | 2:49AM1.76m | 5:30PM1.48m | 6:21PM1.50m | 7:08PM1.53m | |||||||||||||||
Low Tide | 2:03PM0.21m | 3:19AM0.17m | 2:52PM0.36m | 4:09AM-0.09m | 3:40PM0.52m | 4:57AM-0.31m | 4:29PM0.66m | 5:45AM-0.47m | 5:19PM0.78m | 6:34AM-0.55m | 6:11PM0.86m | 7:24AM-0.56m | 7:06PM0.91m | 8:14AM-0.51m | 8:06PM0.94m | 9:06AM-0.41m | 9:11PM0.94m | 9:59AM-0.29m | 10:25PM0.90m | 10:52AM-0.14m | 11:42PM0.82m | 11:45AM0.01m | 00:56AM0.69m | |||||||||||||
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 | |  | | |  |  | | | | | | | | | | | | | | | | | | | | | | | | | | |  | | | |
clear | clear | clear | clear | clear | some clouds | some clouds | clear | clear | clear | clear | some clouds | clear | clear | clear | clear | clear | clear | clear | clear | some clouds | clear | clear | clear | clear | clear | clear | clear | clear | some clouds | clear | clear | clear | cloudy | clear | some clouds | |
km/h | ||||||||||||||||||||||||||||||||||||
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max°C | 15 | 15 | 12 | 12 | 13 | 11 | 13 | 14 | 11 | 12 | 14 | 12 | 15 | 16 | 12 | 15 | 18 | 13 | 16 | 18 | 13 | 15 | 17 | 14 | 23 | 23 | 16 | 17 | 19 | 14 | 16 | 16 | 13 | 14 | 15 | 11 |
Moonrise | 2:59 | — | — | 3:25 | — | — | 3:53 | — | — | 4:26 | — | — | 5:06 | — | — | 5:56 | — | — | 6:55 | — | — | 8:03 | — | — | 9:15 | — | — | 10:26 | — | — | 11:33 | — | — | 12:37 | — | — |
Moonset | — | 3:24 | — | — | 4:36 | — | — | 5:53 | — | — | 7:12 | — | — | 8:32 | — | — | — | 9:47 | — | — | 10:52 | — | — | 11:44 | — | — | — | 12:25 | — | — | 12:58 | — | — | 1:25 | — | — |
 | 5:54 | — | — | 5:54 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — | 5:48 | — | — | 5:48 | — | — | 5:48 | — | — |
 | — | 8:17 | — | — | 8:19 | — | — | 8:19 | — | — | 8:20 | — | — | 8:21 | — | — | 8:22 | — | — | 8:22 | — | — | 8:22 | — | — | 8:23 | — | — | 8:24 | — | — | 8:24 | — | — | 8:25 | — |
Today's sea temperature in Alcatraz Island, San Francisco Bay is 16.4 °C (Statistics for 22 May 1981-2005 – mean: 12.1 max: 14.7 min: 10.1°C) | ||||||||||||||||||||||||||||||||||||
Forecast update inUpdates in hr min sUpdate imminent
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