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 06:39 AM and sunset is at 06:02 PM.

Days 1–3 Weather Summary

Heavy rain (total 38mm), heaviest during Sat afternoon. Cool air temperatures (max 13°C on Thu morning, min 7°C on Sat morning). Winds decreasing (strong winds from the SW on Fri night, light winds from the W by Sat night).

Days 4–6 Weather Summary

Light rain (total 5mm), mostly falling on Sun morning. Cool air temperatures (max 11°C on Mon morning, min 7°C on Mon night). Wind will be generally light.

Days 7–9 Weather Summary

Moderate rain (total 13mm), heaviest on Wed morning. Very mild (max 12°C on Thu morning, min 7°C on Thu night). Wind will be generally light.

Days 10–12 Weather Summary

Heavy rain (total 42mm), heaviest during Sun morning. Very mild (max 13°C on Sat morning, min 9°C on Mon night). Winds increasing (calm on Sat morning, fresh winds from the SSW by Sun afternoon).

Thursday
29
Friday
1
Saturday
2
Sunday
3
Monday
4
Tuesday
5
Wednesday
6
Thursday
7
Friday
8
Saturday
9
Sunday
10
Monday
11
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
2:58PM1.21m
2:48AM1.65m
4:13PM1.11m
3:27AM1.64m
6:05PM1.07m
4:18AM1.65m
8:02PM1.13m
9:02PM1.23m
9:40PM1.33m
7:43AM1.82m
10:12PM1.43m
8:45AM1.92m
10:43PM1.52m
9:42AM1.98m
11:15PM1.63m
10:36AM1.99m
11:46PM1.73m
11:30AM1.94m
00:19AM1.83m
12:25PM1.82m
00:52AM1.89m
Low Tide
8:40AM0.35m
8:08PM0.68m
9:32AM0.30m
8:40PM0.84m
10:34AM0.25m
9:25PM0.98m
11:45AM0.17m
10:50PM1.08m
12:56PM0.06m
00:31AM1.09m
1:58PM-0.06m
1:46AM1.01m
2:51PM-0.17m
2:45AM0.88m
3:38PM-0.25m
3:37AM0.71m
4:21PM-0.28m
4:26AM0.52m
5:01PM-0.23m
5:15AM0.33m
5:41PM-0.12m
6:05AM0.17m
6:20PM0.04m
6:56AM0.04m
Wave
height (m) 
direction
period (s) 
light rain
light rain
rain showers
light rain
rain showers
mod rain
light rain
mod rain
rain showers
rain showers
light rain
rain showers
clear
part cloud
cloud
part cloud
part cloud
part cloud
rain showers
clear
clear
clear
clear
part cloud
part cloud
cloud
mod rain
clear
part cloud
light rain
heavy rain
rain showers
rain showers
cloud
clear
part cloud
light rain
light rain
rain shwrs
light rain
rain shwrs
mod rain
light rain
mod rain
rain shwrs
rain shwrs
light rain
rain shwrs
clear
some clouds
cloudy
some clouds
some clouds
some clouds
rain shwrs
clear
clear
clear
clear
some clouds
some clouds
cloudy
mod rain
clear
some clouds
light rain
heavy rain
rain shwrs
rain shwrs
cloudy
clear
some clouds
 km/h
35
SSW
20
WSW
25
WSW
30
SW
40
SW
40
W
25
WSW
30
WSW
25
W
15
WSW
25
WSW
15
NW
15
WNW
20
WNW
10
NNW
5
NNE
15
W
10
NW
20
S
25
WNW
15
WNW
20
WNW
25
WNW
5
NNW
5
ESE
15
WSW
25
SSW
5
W
15
WSW
20
SSE
30
SSE
35
SSW
15
WNW
15
WNW
25
WNW
15
WNW
 mm 
2.0
2.0
5
2.0
3
9
4
6
5
2.0
2.0
1.0
6
7
4
19
17
2.0
max°C
13
11
12
12
12
12
8
9
9
10
10
9
11
11
9
9
10
9
10
11
10
12
12
10
11
12
12
13
12
11
11
12
11
13
13
11
Moonrise
11:15
12:19
1:25
2:30
3:31
4:25
5:10
5:48
6:20
7:49
8:17
Moonset
8:58
9:26
9:59
10:41
11:32
12:35
1:47
3:04
4:23
5:41
7:58
9:13
Sunrise
6:39
6:39
6:37
6:35
6:35
6:33
6:31
6:30
6:28
6:26
7:26
6:24
Sunset
6:02
6:04
6:05
6:06
6:07
6:07
6:08
6:09
6:10
6:12
7:13
6:14
Today's sea temperature in Alcatraz Island, San Francisco Bay is 13.6 °C (Statistics for 29 Feb 1981-2005 – mean: 12.5 max: 13.6 min: 11.9°C)
Nearest