Daily forecast
as
Last update: 03:37 local time / This forecast is based on the GFS model
Saturday, Sep 13
Wind
Weather
Waves
Tides
02h
6 kts
max 8 kts
16° C
1013 hpa
1.2 m
14 s
0.7
m
05h
5 kts
max 7 kts
15° C
1013 hpa
1.1 m
14 s
05:46
1.3
m
08h
4 kts
max 6 kts
16° C
1014 hpa
1.0 m
13 s
1.1
m
11h
6 kts
max 7 kts
18° C
1015 hpa
1.0 m
13 s
10:02
0.9
m
14h
8 kts
max 10 kts
19° C
1014 hpa
1.0 m
13 s
1.6
m
17h
11 kts
max 16 kts
19° C
1013 hpa
1.1 m
13 s
16:26
1.9
m
20h
9 kts
max 14 kts
17° C
1013 hpa
1.3 m
13 s
1.0
m
23h
7 kts
max 13 kts
16° C
1013 hpa
1.4 m
13 s
23:46
0.0
m
Sunday, Sep 14
Wind
Weather
Waves
Tides
02h
6 kts
max 12 kts
16° C
1013 hpa
1.2 m
13 s
0.3
m
05h
5 kts
max 11 kts
16° C
1013 hpa
1.1 m
13 s
1.0
m
08h
4 kts
max 8 kts
17° C
1013 hpa
0.9 m
13 s
07:21
1.3
m
11h
4 kts
max 7 kts
20° C
1014 hpa
0.9 m
12 s
11:21
1.0
m
14h
8 kts
max 12 kts
21° C
1013 hpa
0.9 m
11 s
1.3
m
17h
10 kts
max 14 kts
20° C
1011 hpa
1.0 m
11 s
17:32
1.8
m
20h
6 kts
max 10 kts
17° C
1012 hpa
1.2 m
10 s
1.4
m
23h
5 kts
max 7 kts
16° C
1012 hpa
1.2 m
9 s
0.3
m
Monday, Sep 15
Wind
Weather
Waves
Tides
02h
4 kts
max 5 kts
16° C
1011 hpa
1.2 m
9 s
01:05
0.0
m
05h
2 kts
max 2 kts
16° C
1011 hpa
1.1 m
9 s
0.7
m
08h
1 kts
max 2 kts
17° C
1012 hpa
1.1 m
9 s
08:41
1.4
m
11h
2 kts
max 4 kts
21° C
1012 hpa
1.0 m
8 s
1.2
m
14h
5 kts
max 5 kts
24° C
1011 hpa
1.0 m
9 s
12:56
1.1
m
17h
7 kts
max 9 kts
23° C
1010 hpa
0.9 m
12 s
1.6
m
20h
5 kts
max 6 kts
19° C
1011 hpa
0.9 m
16 s
18:48
1.8
m
23h
4 kts
max 5 kts
18° C
1012 hpa
0.8 m
18 s
0.7
m
Tuesday, Sep 16
Wind
Weather
Waves
Tides
02h
4 kts
max 4 kts
17° C
1011 hpa
0.8 m
19 s
02:17
0.0
m
05h
3 kts
max 3 kts
17° C
1012 hpa
0.8 m
18 s
0.4
m
08h
2 kts
max 2 kts
18° C
1013 hpa
0.8 m
18 s
1.3
m
11h
2 kts
max 3 kts
22° C
1014 hpa
0.7 m
18 s
09:39
1.5
m
14h
6 kts
max 7 kts
24° C
1013 hpa
0.7 m
18 s
14:16
1.0
m
17h
7 kts
max 10 kts
22° C
1012 hpa
0.7 m
18 s
1.3
m
20h
5 kts
max 6 kts
19° C
1013 hpa
0.7 m
18 s
20:03
1.8
m
23h
4 kts
max 5 kts
18° C
1014 hpa
0.7 m
17 s
1.1
m
Wednesday, Sep 17
Wind
Weather
Waves
Tides
02h
4 kts
max 4 kts
17° C
1014 hpa
0.7 m
16 s
03:16
0.0
m
05h
3 kts
max 3 kts
17° C
1014 hpa
0.8 m
16 s
0.2
m
08h
2 kts
max 2 kts
17° C
1014 hpa
0.8 m
16 s
1.1
m
11h
2 kts
max 3 kts
22° C
1014 hpa
0.8 m
16 s
10:23
1.5
m
14h
5 kts
max 6 kts
24° C
1013 hpa
0.8 m
16 s
15:19
0.8
m
17h
7 kts
max 10 kts
23° C
1011 hpa
0.8 m
15 s
1.0
m
20h
5 kts
max 6 kts
19° C
1011 hpa
0.9 m
14 s
21:08
1.8
m
23h
5 kts
max 6 kts
18° C
1011 hpa
1.1 m
12 s
1.5
m
Thursday, Sep 18
Wind
Weather
Waves
Tides
02h
5 kts
max 6 kts
17° C
1010 hpa
1.1 m
10 s
0.3
m
05h
4 kts
max 4 kts
17° C
1009 hpa
1.1 m
10 s
04:04
0.0
m
08h
4 kts
max 4 kts
17° C
1010 hpa
1.1 m
10 s
0.9
m
11h
4 kts
max 5 kts
20° C
1010 hpa
1.1 m
10 s
11:01
1.6
m
14h
7 kts
max 9 kts
22° C
1009 hpa
1.1 m
10 s
1.0
m
17h
8 kts
max 11 kts
20° C
1008 hpa
1.0 m
10 s
16:11
0.7
m
20h
6 kts
max 7 kts
17° C
1008 hpa
1.0 m
10 s
1.5
m
23h
5 kts
max 6 kts
16° C
1009 hpa
0.9 m
10 s
22:06
1.8
m
Friday, Sep 19
Wind
Weather
Waves
Tides
02h
5 kts
max 7 kts
16° C
1009 hpa
0.9 m
11 s
0.6
m
05h
5 kts
max 6 kts
16° C
1010 hpa
0.9 m
11 s
04:45
0.0
m
08h
5 kts
max 6 kts
17° C
1011 hpa
0.8 m
11 s
0.7
m
11h
8 kts
max 10 kts
20° C
1012 hpa
0.8 m
11 s
11:35
1.6
m
14h
10 kts
max 14 kts
20° C
1012 hpa
0.8 m
11 s
1.2
m
17h
10 kts
max 14 kts
19° C
1012 hpa
0.7 m
11 s
16:57
0.6
m
20h
8 kts
max 12 kts
17° C
1013 hpa
0.7 m
11 s
1.2
m
23h
6 kts
max 9 kts
16° C
1015 hpa
0.6 m
11 s
22:57
1.8
m
Saturday, Sep 20
Wind
Weather
Waves
Tides
02h
4 kts
max 6 kts
16° C
1015 hpa
0.6 m
11 s
1.0
m
05h
3 kts
max 5 kts
16° C
1015 hpa
0.6 m
11 s
05:21
0.0
m
08h
3 kts
max 4 kts
16° C
1016 hpa
0.6 m
12 s
0.6
m
11h
4 kts
max 5 kts
19° C
1017 hpa
0.6 m
12 s
12:05
1.7
m
14h
7 kts
max 8 kts
21° C
1016 hpa
0.6 m
12 s
1.3
m
17h
9 kts
max 12 kts
20° C
1014 hpa
0.6 m
13 s
17:39
0.4
m
20h
6 kts
max 8 kts
17° C
1015 hpa
0.6 m
13 s
0.9
m
23h
5 kts
max 6 kts
16° C
1016 hpa
0.6 m
13 s
23:44
1.7
m
Sunday, Sep 21
Wind
Weather
Waves
Tides
02h
4 kts
max 5 kts
16° C
1015 hpa
0.7 m
13 s
1.2
m
05h
4 kts
max 4 kts
16° C
1015 hpa
0.7 m
13 s
05:53
0.2
m
08h
2 kts
max 2 kts
16° C
1016 hpa
0.7 m
13 s
0.5
m
11h
2 kts
max 2 kts
20° C
1016 hpa
0.7 m
12 s
1.5
m
14h
6 kts
max 7 kts
23° C
1014 hpa
0.7 m
12 s
12:32
1.7
m
17h
6 kts
max 8 kts
22° C
1013 hpa
0.8 m
12 s
18:18
0.4
m
20h
5 kts
max 6 kts
18° C
1013 hpa
0.8 m
12 s
0.6
m
23h
3 kts
max 4 kts
18° C
1013 hpa
0.8 m
11 s
00:29
1.6
m
Monday, Sep 22
Wind
Weather
Waves
Tides
02h
3 kts
max 3 kts
17° C
1013 hpa
0.8 m
11 s
1.4
m
05h
1 kts
max 2 kts
17° C
1012 hpa
0.8 m
12 s
06:24
0.3
m
08h
1 kts
max 1 kts
18° C
1013 hpa
0.8 m
12 s
0.5
m
11h
1 kts
max 2 kts
22° C
1013 hpa
0.8 m
12 s
1.4
m
14h
4 kts
max 5 kts
24° C
1012 hpa
0.8 m
13 s
12:55
1.7
m
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Additional information
General
This is the wind, wave and weather forecast for Alcatraz Island, San Francisco Bay in California, United States of America. Windfinder specializes in wind, waves, tides and weather reports & forecasts for wind related sports like kitesurfing, windsurfing, surfing, sailing, fishing or paragliding.
Forecast
This forecast is based on the GFS model. Forecasts are available worldwide. The horizontal resolution is about 13 km. Forecasts are computed 4 times a day, at about 10:00 PM, 4:00 AM, 10:00 AM and 4:00 PM Pacific Daylight Time. Predictions are available in time steps of 3 hours for up to 10 days into the future. The arrows point in the direction in which the wind is blowing.Check the wind forecast for Alcatraz Island, San Francisco Bay when you search for the best travel destinations for your kiteboarding, windsurfing or sailing vacations in United States of America. Or use our wind forecast to find the wind speed today in Alcatraz Island, San Francisco Bay or to have a look at the wind direction tomorrow at Alcatraz Island, San Francisco Bay.
Severe Weather Warnings
When a severe weather warning or advisory is provided by the local meteorological institute, we display it as a banner above the wind forecast.The weather warning, for example a high wind warning, can help you prepare for dangerous weather conditions and avoid weather-related risks. The color scale indicates the intensity of the predicted weather event. For more details click or tap on the warning. General information about severe weather warnings can be found in our help section.
Please be aware that severe weather may occur without a prior severe weather warning being reported.
Units
We use knots and degrees Celsius as our default units. These units are often used by sailors, kiters, surfers, windsurfers and paragliders. Use website settings to switch between units and 7 different languages at any time. For converting between wind speed units such as knots, km/h (kilometers per hour), m/s (meters per second), and mph (miles per hour) use our wind speed calculator.