Daily forecast
as
Last update: 14:37 local time / This forecast is based on the GFS model
Wednesday, Feb 18
Wind
Weather
Waves
Tides
01h
14 kts
max 22 kts
1.08 mm
8° C
1009 hpa
2.6 m
12 s
00:33
1.6
m
04h
12 kts
max 19 kts
8° C
1011 hpa
2.6 m
12 s
0.8
m
07h
7 kts
max 11 kts
7° C
1013 hpa
2.4 m
12 s
05:51
0.5
m
10h
12 kts
max 14 kts
9° C
1015 hpa
2.2 m
13 s
1.5
m
13h
8 kts
max 12 kts
0.89 mm
10° C
1015 hpa
2.1 m
13 s
11:54
1.8
m
16h
11 kts
max 14 kts
0.48 mm
10° C
1014 hpa
2.0 m
13 s
0.4
m
19h
9 kts
max 13 kts
9° C
1014 hpa
1.9 m
13 s
18:15
-0.1
m
22h
7 kts
max 10 kts
9° C
1012 hpa
1.8 m
12 s
0.9
m
Thursday, Feb 19
Wind
Weather
Waves
Tides
01h
12 kts
max 17 kts
2.87 mm
8° C
1009 hpa
1.7 m
12 s
00:59
1.6
m
04h
18 kts
max 24 kts
5.52 mm
7° C
1005 hpa
1.5 m
12 s
0.9
m
07h
11 kts
max 20 kts
2.94 mm
7° C
1005 hpa
1.6 m
10 s
06:33
0.4
m
10h
18 kts
max 28 kts
0.98 mm
9° C
1007 hpa
2.2 m
8 s
1.2
m
13h
23 kts
max 30 kts
11° C
1008 hpa
2.7 m
9 s
12:40
1.6
m
16h
20 kts
max 28 kts
11° C
1009 hpa
3.0 m
10 s
0.8
m
19h
16 kts
max 24 kts
9° C
1010 hpa
2.7 m
10 s
18:46
0.1
m
22h
10 kts
max 16 kts
8° C
1013 hpa
2.3 m
11 s
0.9
m
Friday, Feb 20
Wind
Weather
Waves
Tides
01h
7 kts
max 13 kts
8° C
1014 hpa
1.9 m
11 s
01:27
1.7
m
04h
4 kts
max 5 kts
7° C
1015 hpa
1.6 m
11 s
1.2
m
07h
4 kts
max 4 kts
6° C
1016 hpa
1.4 m
11 s
07:19
0.3
m
10h
6 kts
max 6 kts
7° C
1018 hpa
1.2 m
11 s
0.8
m
13h
4 kts
max 5 kts
9° C
1017 hpa
1.1 m
10 s
13:32
1.5
m
16h
3 kts
max 4 kts
10° C
1016 hpa
1.0 m
10 s
1.0
m
19h
6 kts
max 6 kts
9° C
1017 hpa
0.9 m
10 s
19:20
0.2
m
22h
5 kts
max 6 kts
8° C
1018 hpa
0.8 m
10 s
0.8
m
Saturday, Feb 21
Wind
Weather
Waves
Tides
01h
5 kts
max 6 kts
7° C
1018 hpa
0.8 m
9 s
01:57
1.8
m
04h
6 kts
max 7 kts
7° C
1019 hpa
0.7 m
9 s
1.4
m
07h
6 kts
max 8 kts
6° C
1019 hpa
0.7 m
9 s
08:10
0.2
m
10h
7 kts
max 9 kts
9° C
1020 hpa
0.6 m
12 s
0.5
m
13h
7 kts
max 11 kts
13° C
1019 hpa
0.8 m
12 s
1.2
m
16h
15 kts
max 19 kts
13° C
1018 hpa
1.2 m
7 s
14:32
1.4
m
19h
11 kts
max 21 kts
12° C
1019 hpa
1.3 m
6 s
19:56
0.5
m
22h
11 kts
max 21 kts
11° C
1020 hpa
1.5 m
7 s
0.8
m
Sunday, Feb 22
Wind
Weather
Waves
Tides
01h
12 kts
max 23 kts
11° C
1020 hpa
1.7 m
7 s
1.6
m
04h
11 kts
max 21 kts
10° C
1020 hpa
1.8 m
8 s
02:33
1.8
m
07h
10 kts
max 19 kts
11° C
1021 hpa
1.9 m
8 s
0.5
m
10h
7 kts
max 15 kts
12° C
1023 hpa
2.0 m
9 s
09:09
0.2
m
13h
7 kts
max 14 kts
15° C
1023 hpa
2.1 m
9 s
0.8
m
16h
7 kts
max 13 kts
16° C
1022 hpa
2.1 m
9 s
15:49
1.2
m
19h
5 kts
max 10 kts
14° C
1023 hpa
2.1 m
9 s
0.8
m
22h
6 kts
max 11 kts
13° C
1024 hpa
2.0 m
9 s
20:37
0.7
m
Monday, Feb 23
Wind
Weather
Waves
Tides
01h
6 kts
max 8 kts
13° C
1023 hpa
1.9 m
9 s
1.5
m
04h
5 kts
max 5 kts
12° C
1023 hpa
1.9 m
8 s
03:16
1.8
m
07h
4 kts
max 4 kts
12° C
1022 hpa
1.8 m
9 s
0.9
m
10h
4 kts
max 6 kts
14° C
1022 hpa
1.8 m
9 s
10:18
0.1
m
13h
3 kts
max 5 kts
16° C
1020 hpa
1.8 m
9 s
0.5
m
16h
2 kts
max 7 kts
15° C
1019 hpa
1.7 m
10 s
17:29
1.1
m
19h
4 kts
max 9 kts
1.28 mm
14° C
1018 hpa
1.7 m
10 s
1.0
m
22h
11 kts
max 22 kts
2.03 mm
14° C
1018 hpa
1.6 m
10 s
21:31
0.9
m
Tuesday, Feb 24
Wind
Weather
Waves
Tides
01h
12 kts
max 25 kts
1.88 mm
14° C
1017 hpa
1.6 m
10 s
1.4
m
04h
14 kts
max 27 kts
6.38 mm
14° C
1015 hpa
1.6 m
10 s
04:10
1.8
m
07h
15 kts
max 27 kts
8.03 mm
14° C
1015 hpa
1.7 m
10 s
1.3
m
10h
14 kts
max 26 kts
9.81 mm
14° C
1016 hpa
1.6 m
10 s
0.2
m
13h
11 kts
max 24 kts
5.37 mm
14° C
1015 hpa
1.6 m
10 s
11:36
0.0
m
16h
10 kts
max 20 kts
4.84 mm
14° C
1014 hpa
1.6 m
10 s
0.8
m
19h
8 kts
max 17 kts
1.6 mm
14° C
1015 hpa
1.6 m
10 s
19:15
1.2
m
22h
8 kts
max 16 kts
0.99 mm
14° C
1016 hpa
1.7 m
10 s
22:51
1.0
m
Wednesday, Feb 25
Wind
Weather
Waves
Tides
01h
6 kts
max 11 kts
1.15 mm
14° C
1016 hpa
1.7 m
10 s
1.2
m
04h
4 kts
max 7 kts
13° C
1016 hpa
1.7 m
10 s
05:17
1.8
m
07h
4 kts
max 6 kts
12° C
1017 hpa
1.7 m
10 s
1.6
m
10h
6 kts
max 8 kts
14° C
1019 hpa
1.6 m
10 s
0.5
m
13h
8 kts
max 9 kts
15° C
1019 hpa
1.6 m
10 s
12:55
0.0
m
16h
8 kts
max 9 kts
14° C
1019 hpa
1.6 m
10 s
0.4
m
19h
8 kts
max 9 kts
12° C
1020 hpa
1.6 m
10 s
1.1
m
22h
7 kts
max 10 kts
11° C
1022 hpa
1.5 m
9 s
20:33
1.3
m
Thursday, Feb 26
Wind
Weather
Waves
Tides
01h
7 kts
max 10 kts
11° C
1023 hpa
1.5 m
10 s
00:28
1.0
m
04h
2 kts
max 3 kts
10° C
1023 hpa
1.4 m
9 s
1.5
m
07h
1 kts
max 2 kts
10° C
1025 hpa
1.3 m
10 s
06:31
1.8
m
10h
4 kts
max 5 kts
12° C
1027 hpa
1.2 m
10 s
1.0
m
13h
5 kts
max 6 kts
14° C
1026 hpa
1.2 m
10 s
14:02
-0.1
m
16h
6 kts
max 8 kts
15° C
1025 hpa
1.2 m
9 s
0.1
m
19h
6 kts
max 8 kts
12° C
1026 hpa
1.3 m
9 s
1.0
m
22h
7 kts
max 10 kts
11° C
1027 hpa
1.3 m
9 s
21:26
1.4
m
Friday, Feb 27
Wind
Weather
Waves
Tides
01h
6 kts
max 9 kts
10° C
1027 hpa
1.3 m
10 s
01:47
1.0
m
04h
6 kts
max 7 kts
9° C
1026 hpa
1.3 m
13 s
1.2
m
07h
5 kts
max 6 kts
9° C
1026 hpa
1.4 m
14 s
07:43
1.9
m
10h
4 kts
max 6 kts
12° C
1027 hpa
1.3 m
13 s
1.4
m
13h
5 kts
max 8 kts
15° C
1025 hpa
1.4 m
13 s
0.1
m
16h
5 kts
max 9 kts
18° C
1022 hpa
1.4 m
11 s
14:58
-0.2
m
19h
6 kts
max 9 kts
15° C
1022 hpa
1.6 m
12 s
0.7
m
22h
13 kts
max 29 kts
15° C
1022 hpa
1.5 m
13 s
22:08
1.5
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 9:00 PM, 3:00 AM, 9:00 AM and 3:00 PM Pacific Standard 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.