Alcatraz Island, San Francisco Bay Sea Conditions and Tide Table

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 06:41 AM and sunset is at 07:35 PM.

	Days 1–3 Weather Summary Mostly dry. Cool air temperatures (max 19°C on Fri afternoon, min 14°C on Fri night). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Warm air temperatures (max 22°C on Mon afternoon, min 14°C on Mon morning). Wind will be generally light.									Days 7–9 Weather Summary Mostly dry. Warm (max 28°C on Thu afternoon, min 16°C on Fri night). Wind will be generally light.									Days 10–12 Weather Summary Mostly dry. Warm (max 24°C on Tue afternoon, min 16°C on Sun morning). Wind will be generally light.									Days 13–16 Weather Summary Mostly dry. Warm (max 22°C on Wed afternoon, min 16°C on Wed night). Wind will be generally light.
	Friday 4			Saturday 5			Sunday 6			Monday 7			Tuesday 8			Wednesday 9			Thursday 10			Friday 11			Saturday 12			Sunday 13			Monday 14			Tuesday 15			Wednesday 16			Thursday 17			Friday 18			Sat 19
	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	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM
Wave Height Map See all maps
High Tide	7:32AM1.23m		5:40PM1.86m	8:55AM1.31m		6:54PM1.87m	9:51AM1.41m		8:08PM1.90m	10:35AM1.49m		9:14PM1.93m		11:13AM1.58m	10:13PM1.94m		11:48AM1.65m	11:08PM1.91m		12:21PM1.71m	00:00AM1.84m		12:53PM1.76m	00:51AM1.74m		1:23PM1.80m	1:43AM1.62m		1:52PM1.81m	2:36AM1.50m		2:21PM1.79m	3:34AM1.38m		2:52PM1.76m	4:42AM1.29m		3:28PM1.70m		6:08AM1.24m	4:14PM1.64m		7:44AM1.26m
Low Tide		11:14AM1.04m	1:13AM0.05m		12:48PM1.07m	2:24AM-0.04m		2:11PM1.00m	3:23AM-0.11m		3:17PM0.87m	4:13AM-0.15m		4:13PM0.71m	4:56AM-0.14m			5:03PM0.55m	5:36AM-0.08m		5:51PM0.41m	6:13AM0.03m		6:37PM0.30m	6:49AM0.19m		7:22PM0.22m	7:24AM0.37m		8:07PM0.18m	8:00AM0.56m		8:53PM0.17m	8:38AM0.75m		9:41PM0.19m	9:21AM0.91m		10:38PM0.23m	10:18AM1.05m		11:44PM0.26m		11:43AM1.12m
Wave Height (m) Direction Period (s)	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	some clouds	some clouds	clear	cloudy	cloudy	some clouds	some clouds	clear	some clouds	some clouds	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear
km/h	W	W	W	WSW	W	W	WSW	W	W	NE	W	SW	SW	WSW	WSW	SE	WNW	NNE	ENE	SW	SW	SW	WSW	S	SW	WSW	W	WSW	W	SSW	WSW	WSW	SW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	18	19	16	17	19	16	16	18	15	17	22	18	18	19	15	16	20	21	25	28	24	19	20	18	19	21	18	19	21	17	20	22	19	22	24	19	21	22	18	20	22	18	20	22	18	20	22
Moonrise	—	—	—	12:15	—	—	1:23	—	—	2:37	—	—	3:52	—	—	5:05	—	—	6:16	—	—	7:24	—	—	8:30	—	—	9:36	—	—	10:40	—	—	11:45	—	—	12:47	—	—	1:46	—	—	2:40	—	—	—	3:27
Moonset	—	3:05	—	—	4:07	—	—	4:59	—	—	5:41	—	—	6:15	—	—	6:45	—	—	7:11	—	—	7:35	—	—	8:00	—	—	8:26	—	—	8:55	—	—	—	9:28	—	—	10:07	—	—	10:52	—	—	11:43	—	—
	6:41	—	—	6:41	—	—	6:43	—	—	6:43	—	—	6:45	—	—	6:46	—	—	6:46	—	—	6:47	—	—	6:48	—	—	6:48	—	—	6:50	—	—	6:50	—	—	6:52	—	—	6:52	—	—	6:52	—	—	6:54	—
	—	7:35	—	—	7:32	—	—	7:31	—	—	7:30	—	—	7:28	—	—	7:27	—	—	7:24	—	—	7:23	—	—	7:22	—	—	7:21	—	—	7:19	—	—	7:17	—	—	7:15	—	—	7:14	—	—	7:13	—	—	7:10
	Today's sea temperature in Alcatraz Island, San Francisco Bay is 18.1°C (Statistics for 04 Sep 1981-2005 – mean: 14.6 max: 17.1 min: 13.2°C)