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 —.

Days 1–4 Weather Summary

Mostly dry. Cool air temperatures (max 14°C on Tue afternoon, min 8°C on Mon night). Wind will be generally light.

Days 5–7 Weather Summary

Mostly dry. Cool air temperatures (max 18°C on Sun afternoon, min 10°C on Thu night). Wind will be generally light.

Days 8–10 Weather Summary

Mostly dry. Very mild (max 18°C on Mon morning, min 12°C on Mon night). Wind will be generally light.

Days 11–13 Weather Summary

Mostly dry. Warm (max 20°C on Thu afternoon, min 9°C on Sat afternoon). Wind will be generally light.

Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Sat
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
2:52AM1.62m
3:53PM1.11m
3:27AM1.62m
5:37PM1.04m
4:11AM1.61m
7:46PM1.09m
9:01PM1.18m
9:40PM1.27m
7:18AM1.71m
10:11PM1.34m
8:16AM1.79m
10:40PM1.40m
9:08AM1.86m
11:08PM1.46m
9:58AM1.91m
11:36PM1.54m
10:47AM1.91m
00:05AM1.62m
11:37AM1.85m
00:35AM1.72m
12:30PM1.74m
Low Tide
8:16PM0.57m
9:37AM0.39m
8:45PM0.76m
10:39AM0.36m
9:23PM0.92m
11:49AM0.30m
10:36PM1.05m
12:57PM0.21m
00:24AM1.09m
1:56PM0.09m
1:38AM1.06m
2:45PM-0.04m
2:32AM0.98m
3:28PM-0.16m
3:17AM0.87m
4:07PM-0.24m
3:59AM0.73m
4:43PM-0.27m
4:43AM0.57m
5:19PM-0.24m
5:28AM0.41m
5:55PM-0.14m
6:15AM0.26m
6:31PM0.02m
Wave
height (m) 
direction
period (s) 
clear
clear
part cloud
cloud
part cloud
cloud
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
some clouds
cloudy
some clouds
cloudy
clear
clear
clear
clear
clear
clear
some clouds
clear
clear
clear
clear
some clouds
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
some clouds
clear
some clouds
cloudy
some clouds
some clouds
some clouds
some clouds
 km/h
5
NNW
5
NE
5
WNW
5
SW
10
S
10
WNW
10
NNW
5
N
5
W
5
NNE
5
NE
10
NW
5
ENE
5
NNE
10
WNW
5
WNW
0
NW
10
WNW
5
NNW
5
NNE
15
WNW
5
WNW
5
NNW
10
W
0
SSW
5
NE
10
WNW
0
ESE
10
NE
10
N
5
N
5
N
15
WSW
15
WSW
10
SW
20
WSW
 mm 
max°C
10
13
14
11
12
13
12
12
14
13
14
15
12
16
16
14
17
18
15
18
18
15
16
16
13
17
18
14
18
20
17
17
16
11
12
11
Moonrise
11:05
12:06
1:08
2:10
3:10
4:06
4:55
5:37
6:12
6:43
7:11
7:37
Moonset
9:12
9:36
10:04
10:38
11:19
12:09
1:09
2:16
3:29
4:43
5:57
7:11
8:25
Sunrise
6:54
6:54
6:52
6:50
6:50
6:48
6:47
6:46
6:45
6:43
6:41
6:39
Sunset
5:52
5:52
5:53
5:54
5:55
5:57
5:58
5:59
6:00
6:00
6:01
6:02
Today's sea temperature in Alcatraz Island, San Francisco Bay is 11.1 °C (Statistics for 17 Feb 1981-2005 – mean: 12.1 max: 13.6 min: 10.5°C)
Issued (local time): 9 pm Monday 17 Feb 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest