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 SummaryMostly dry. Cool air temperatures (max 18°C on Sat afternoon, min 10°C on Fri night). Wind will be generally light. | Days 5–7 Weather SummaryMostly dry. Cool air temperatures (max 14°C on Tue afternoon, min 10°C on Wed night). Wind will be generally light. | Days 8–10 Weather SummaryLight rain (total 3mm), mostly falling on Thu night. Very mild (max 14°C on Fri afternoon, min 10°C on Fri night). Winds decreasing (fresh winds from the WNW on Fri afternoon, calm by Sat morning). | Days 11–13 Weather SummaryMostly dry. Warm (max 21°C on Wed afternoon, min 10°C on Sun night). Wind will be generally light. | |||||||||||||||||||||||||||||||||
Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | Thursday 25 | Friday 26 | Saturday 27 | Sunday 28 | Monday 29 | Tuesday 30 | Wed 1 | |||||||||||||||||||||||||
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 | 10:48PM1.55m | 10:38AM1.39m | 11:11PM1.60m | 11:26AM1.37m | 11:32PM1.65m | 12:12PM1.36m | 11:53PM1.68m | 12:57PM1.34m | 00:17AM1.71m | 1:43PM1.31m | 00:42AM1.72m | 2:31PM1.28m | 1:11AM1.72m | 3:24PM1.25m | 1:45AM1.71m | 4:23PM1.22m | 2:25AM1.67m | 5:30PM1.21m | 6:37PM1.24m | 7:35PM1.30m | 5:32AM1.51m | |||||||||||||||
Low Tide | 4:41AM0.39m | 4:35PM0.28m | 5:16AM0.25m | 5:05PM0.37m | 5:50AM0.12m | 5:34PM0.47m | 6:21AM0.01m | 6:03PM0.58m | 6:53AM-0.09m | 6:32PM0.69m | 7:26AM-0.16m | 7:03PM0.80m | 8:04AM-0.21m | 7:36PM0.89m | 8:47AM-0.22m | 8:15PM0.97m | 9:36AM-0.21m | 9:08PM1.03m | 10:33AM-0.18m | 10:25PM1.05m | 11:36AM-0.14m | 00:00AM1.00m | 12:39PM-0.11m | |||||||||||||
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 |  |  |  | | | | | | | | | | | | | | |  | | | | | | |  | | | | | | | | | | | |
some clouds | some clouds | clear | clear | clear | clear | clear | clear | clear | some clouds | some clouds | some clouds | some clouds | some clouds | some clouds | some clouds | clear | some clouds | rain shwrs | some clouds | clear | clear | clear | clear | clear | cloudy | some clouds | some clouds | clear | clear | clear | clear | clear | clear | clear | clear | |
km/h | ||||||||||||||||||||||||||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max°C | 11 | 14 | 18 | 15 | 15 | 18 | 16 | 17 | 18 | 12 | 13 | 14 | 12 | 13 | 13 | 12 | 12 | 13 | 12 | 13 | 14 | 11 | 13 | 14 | 12 | 13 | 14 | 12 | 13 | 16 | 12 | 14 | 17 | 13 | 17 | 21 |
Moonrise | 4:04 | — | 5:02 | — | — | 6:00 | — | — | 6:59 | — | — | 8:00 | — | — | — | 9:03 | — | — | 10:09 | — | — | 11:14 | — | — | — | 12:17 | — | — | 1:13 | — | — | 2:02 | — | — | 2:42 | — |
Moonset | 4:42 | 5:04 | — | — | 5:24 | — | — | 5:45 | — | — | 6:07 | — | — | 6:33 | — | — | 7:02 | — | — | 7:38 | — | — | 8:23 | — | — | 9:17 | — | — | 10:20 | — | — | 11:29 | — | — | 12:42 | — |
 | — | 6:26 | — | — | 6:24 | — | — | 6:24 | — | — | 6:22 | — | — | 6:20 | — | — | 6:20 | — | — | 6:18 | — | — | 6:16 | — | — | 6:16 | — | — | 6:15 | — | — | 6:13 | — | — | 6:13 | — |
 | — | — | 7:50 | — | — | 7:51 | — | — | 7:52 | — | — | 7:52 | — | — | 7:53 | — | — | 7:54 | — | — | 7:55 | — | — | 7:57 | — | — | 7:58 | — | — | 7:58 | — | — | 7:59 | — | — | 8:00 |
Today's sea temperature in Alcatraz Island, San Francisco Bay is 15.0 °C (Statistics for 19 Apr 1981-2005 – mean: 11.9 max: 13.9 min: 10.7°C) | ||||||||||||||||||||||||||||||||||||
Nearest