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 06:26 AM and sunset is at 07:50 PM.
Days 1–3 Weather SummaryMostly dry. Cool air temperatures (max 18°C on Sat afternoon, min 11°C on Sat morning). Wind will be generally light. | Days 4–6 Weather SummaryLight rain (total 2mm), mostly falling on Thu night. Cool air temperatures (max 14°C on Tue afternoon, min 10°C on Wed night). Wind will be generally light. | Days 7–9 Weather SummaryMostly dry. Very mild (max 14°C on Fri morning, min 9°C on Fri night). Winds decreasing (fresh winds from the W on Fri afternoon, calm by Sat morning). | Days 10–12 Weather SummaryMostly dry. Warm (max 22°C on Wed afternoon, min 9°C on Mon 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 | Wednesday 1 | |||||||||||||||||||||||||
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 | 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 | 8:20PM1.40m | |||||||||||||||
Low Tide | 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 | 1:24AM0.86m | |||||||||||||
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clear | clear | clear | clear | clear | clear | clear | clear | some clouds | some clouds | clear | some clouds | some clouds | clear | clear | clear | clear | rain shwrs | some clouds | clear | clear | clear | clear | some clouds | clear | clear | some clouds | some clouds | some clouds | clear | clear | clear | clear | clear | clear | clear | |
km/h | ||||||||||||||||||||||||||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2.0 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max°C | 14 | 18 | 15 | 15 | 18 | 15 | 16 | 17 | 12 | 12 | 14 | 12 | 13 | 14 | 12 | 12 | 14 | 12 | 14 | 14 | 12 | 13 | 14 | 12 | 11 | 13 | 11 | 13 | 14 | 11 | 12 | 16 | 17 | 18 | 22 | 16 |
Moonrise | — | 5:02 | — | — | 6:00 | — | — | 6:59 | — | — | 8:00 | — | — | — | 9:03 | — | — | 10:09 | — | — | 11:14 | — | — | — | 12:17 | — | — | 1:13 | — | — | 2:02 | — | — | 2:42 | — | — |
Moonset | 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 20 Apr 1981-2005 – mean: 11.9 max: 13.9 min: 10.7°C) | ||||||||||||||||||||||||||||||||||||
Nearest