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 06:09 AM and sunset is at 08:01 PM.
Days 1–3 Weather SummaryHeavy rain (total 24mm), heaviest during Sat morning. Cool air temperatures (max 16°C on Fri afternoon, min 8°C on Sun night). Winds increasing (calm on Fri morning, fresh winds from the W by Sat afternoon). | Days 4–6 Weather SummaryMostly dry. Warm air temperatures (max 21°C on Wed afternoon, min 9°C on Mon morning). Wind will be generally light. | Days 7–9 Weather SummaryMostly dry. Warm (max 25°C on Thu afternoon, min 14°C on Sat night). Wind will be generally light. | Days 10–12 Weather SummaryMostly dry. Very mild (max 18°C on Sun afternoon, min 10°C on Mon night). Wind will be generally light. | |||||||||||||||||||||||||||||||||
Friday 3 | Saturday 4 | Sunday 5 | Monday 6 | Tuesday 7 | Wednesday 8 | Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | |||||||||||||||||||||||||
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 | 8:13AM1.44m | 9:33PM1.63m | 9:28AM1.45m | 10:07PM1.76m | 10:36AM1.46m | 10:41PM1.87m | 11:40AM1.47m | 11:15PM1.95m | 12:41PM1.47m | 11:51PM1.99m | 1:40PM1.45m | 00:29AM1.98m | 2:39PM1.43m | 1:08AM1.93m | 3:38PM1.39m | 1:51AM1.84m | 4:39PM1.37m | 2:38AM1.72m | 5:41PM1.35m | 6:40PM1.36m | 7:32PM1.39m | |||||||||||||||
Low Tide | 2:31PM-0.01m | 3:27AM0.38m | 3:20PM0.09m | 4:18AM0.11m | 4:06PM0.22m | 5:06AM-0.13m | 4:51PM0.36m | 5:53AM-0.33m | 5:35PM0.51m | 6:38AM-0.45m | 6:20PM0.65m | 7:24AM-0.49m | 7:07PM0.78m | 8:11AM-0.46m | 7:58PM0.87m | 9:00AM-0.37m | 8:56PM0.94m | 9:53AM-0.26m | 10:04PM0.98m | 10:49AM-0.13m | 11:22PM0.95m | 11:46AM-0.01m | 00:41AM0.87m | |||||||||||||
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 | |  |  |  |  | | | |  | | | | | | | | | | | | | | | | | | | | | | | | | | | |
clear | clear | some clouds | heavy rain | rain shwrs | clear | clear | clear | clear | some clouds | clear | clear | clear | clear | clear | clear | clear | clear | clear | clear | clear | some clouds | some clouds | some clouds | clear | some clouds | some clouds | clear | clear | clear | some clouds | clear | some clouds | clear | clear | clear | |
km/h | ||||||||||||||||||||||||||||||||||||
— | — | — | 20 | 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max°C | 15 | 16 | 13 | 11 | 11 | 10 | 11 | 12 | 10 | 11 | 12 | 11 | 13 | 17 | 14 | 17 | 21 | 18 | 21 | 25 | 20 | 21 | 24 | 19 | 20 | 22 | 17 | 17 | 18 | 13 | 13 | 15 | 13 | 15 | 17 | 13 |
Moonrise | 3:46 | — | — | 4:13 | — | — | 4:40 | — | — | 5:07 | — | — | 5:37 | — | — | 6:13 | — | — | 6:55 | — | — | 7:45 | — | — | 8:43 | — | — | 9:45 | — | — | 10:50 | — | — | 11:54 | — | — |
Moonset | — | 3:09 | — | — | 4:22 | — | — | 5:35 | — | — | 6:50 | — | — | 8:06 | — | — | — | 9:22 | — | — | 10:34 | — | — | 11:38 | — | — | — | 12:33 | — | — | 1:17 | — | — | 1:52 | — | — |
 | 6:09 | — | — | 6:09 | — | — | 6:07 | — | — | 6:07 | — | — | 6:05 | — | — | 6:05 | — | — | 6:03 | — | — | 6:03 | — | — | 6:01 | — | — | 6:01 | — | — | 6:00 | — | — | 6:00 | — | — |
 | — | 8:01 | — | — | 8:02 | — | — | 8:04 | — | — | 8:05 | — | — | 8:06 | — | — | 8:07 | — | — | 8:07 | — | — | 8:07 | — | — | 8:08 | — | — | 8:09 | — | — | 8:10 | — | — | 8:12 | — |
Today's sea temperature in Alcatraz Island, San Francisco Bay is 15.2 °C (Statistics for 03 May 1981-2005 – mean: 12.0 max: 14.2 min: 10.2°C) | ||||||||||||||||||||||||||||||||||||
Nearest