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 — and sunset is at 04:52 PM.

	Days 1–4 Weather Summary Heavy rain (total 21mm), heaviest during Fri afternoon. Cool air temperatures (max 15°C on Fri afternoon, min 11°C on Sat night). Winds decreasing (fresh winds from the SSW on Fri afternoon, calm by Sat night).											Days 5–7 Weather Summary Light rain (total 7mm), mostly falling on Mon afternoon. Cool air temperatures (max 13°C on Tue morning, min 9°C on Wed night). Wind will be generally light.									Days 8–10 Weather Summary Mostly dry. Very mild (max 14°C on Sat afternoon, min 7°C on Thu night). Wind will be generally light.									Days 11–13 Weather Summary Mostly dry. Very mild (max 16°C on Tue afternoon, min 8°C on Sun night). Wind will be generally light.
	Fri 22		Saturday 23			Sunday 24			Monday 25			Tuesday 26			Wednesday 27			Thursday 28			Friday 29			Saturday 30			Sunday 1			Monday 2			Tuesday 3			Wed 4
	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
Wave Height Map See all maps
High Tide	4:22PM1.42m	6:50AM1.55m		5:39PM1.30m		7:27AM1.60m	6:58PM1.24m		7:58AM1.66m		8:13PM1.22m	8:26AM1.71m		9:18PM1.24m	8:52AM1.76m		10:16PM1.27m	9:19AM1.80m		11:07PM1.30m	9:47AM1.83m		11:55PM1.34m	10:17AM1.85m		00:39AM1.36m	10:49AM1.86m		1:24AM1.37m	11:25AM1.86m		2:09AM1.37m	12:04PM1.83m		2:55AM1.37m	12:47PM1.79m
Low Tide		11:20PM0.14m	12:29PM0.79m		00:13AM0.26m		1:29PM0.62m	1:00AM0.38m		2:19PM0.45m	1:44AM0.50m		3:01PM0.27m	2:24AM0.61m		3:39PM0.12m	3:02AM0.72m		4:13PM-0.02m	3:39AM0.82m		4:45PM-0.12m	4:15AM0.91m		5:18PM-0.20m	4:50AM0.98m		5:53PM-0.25m	5:25AM1.03m		6:31PM-0.28m	6:04AM1.06m			7:11PM-0.27m
Wave height (m) direction period (s)	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

	heavy rain	rain shwrs	clear	clear	clear	some clouds	cloudy	some clouds	some clouds	light rain	light rain	cloudy	cloudy	some clouds	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	some clouds
km/h	SSE	WSW	SW	W	S	SE	SSW	SSE	SSE	ENE	NNE	WNW	WSW	WNW	WNW	WNW	NW	ENE	N	NNE	NE	NE	NE	NE	NNE	NNE	NE	NNE	NE	NE	NE	NE	NE	NE	NE	NE
mm	15	6	—	—	—	—	—	—	—	3	4	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max°C	15	13	14	13	11	14	14	13	15	12	11	13	13	12	12	12	11	12	13	11	11	13	10	12	14	11	12	14	10	13	15	13	15	16	13	15
Moonrise	—	11:49	—	—	—	12:48	—	—	1:46	—	—	2:43	—	—	3:41	—	—	4:41	—	—	5:43	—	—	6:47	—	—	7:50	—	—	8:51	—	—	9:45	—	—	10:32
Moonset	12:55	—	1:18	—	—	1:40	—	—	2:00	—	—	2:21	—	—	2:43	—	—	—	3:08	—	—	3:38	—	—	4:14	—	—	4:58	—	—	5:51	—	—	6:52	—	7:59
	—	—	6:58	—	—	7:00	—	—	7:01	—	—	7:01	—	—	7:03	—	—	7:03	—	—	7:05	—	—	7:05	—	—	7:07	—	—	7:07	—	—	7:09	—	—	7:09
	4:52	—	—	4:52	—	—	4:52	—	—	4:52	—	—	4:51	—	—	4:51	—	—	4:51	—	—	4:51	—	—	4:50	—	—	4:50	—	—	4:50	—	—	4:50	—	—
	Today's sea temperature in Alcatraz Island, San Francisco Bay is 12.6 °C (Statistics for 22 Nov 1981-2005 – mean: 13.1 max: 16.1 min: 11.2°C)