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NWS Transformation
Point Forecast:
20NM W San Francisco CA
37.75N 122.83W (Elev. 0 ft)
Last Update: 8:28 pm PDT Sep 19, 2025
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Weather Elements
Weather/Precipitation
Marine Weather
Temperature (°F)
Dewpoint (°F)
Heat Index (°F)
Surface Wind
kt
mph
km/h
m/s
Sky Cover (%)
Precipitation Potential (%)
Relative Humidity (%)
Rain
Thunder
Fog
Swell Period
Swell Hgt/Dir
Swell 2 Period
Swell 2 Hgt/Dir
Wind Wave Height
Significant Wave Height
Freezing Spray
48-Hour Period Starting:
10pm Fri, Sep 19 2025
11pm Fri, Sep 19 2025
12am Sat, Sep 20 2025
1am Sat, Sep 20 2025
2am Sat, Sep 20 2025
3am Sat, Sep 20 2025
4am Sat, Sep 20 2025
5am Sat, Sep 20 2025
6am Sat, Sep 20 2025
7am Sat, Sep 20 2025
8am Sat, Sep 20 2025
9am Sat, Sep 20 2025
10am Sat, Sep 20 2025
11am Sat, Sep 20 2025
12pm Sat, Sep 20 2025
1pm Sat, Sep 20 2025
2pm Sat, Sep 20 2025
3pm Sat, Sep 20 2025
4pm Sat, Sep 20 2025
5pm Sat, Sep 20 2025
6pm Sat, Sep 20 2025
7pm Sat, Sep 20 2025
8pm Sat, Sep 20 2025
9pm Sat, Sep 20 2025
10pm Sat, Sep 20 2025
11pm Sat, Sep 20 2025
12am Sun, Sep 21 2025
1am Sun, Sep 21 2025
2am Sun, Sep 21 2025
3am Sun, Sep 21 2025
4am Sun, Sep 21 2025
5am Sun, Sep 21 2025
6am Sun, Sep 21 2025
7am Sun, Sep 21 2025
8am Sun, Sep 21 2025
9am Sun, Sep 21 2025
10am Sun, Sep 21 2025
11am Sun, Sep 21 2025
12pm Sun, Sep 21 2025
1pm Sun, Sep 21 2025
2pm Sun, Sep 21 2025
3pm Sun, Sep 21 2025
4pm Sun, Sep 21 2025
5pm Sun, Sep 21 2025
6pm Sun, Sep 21 2025
7pm Sun, Sep 21 2025
8pm Sun, Sep 21 2025
9pm Sun, Sep 21 2025
10pm Sun, Sep 21 2025
11pm Sun, Sep 21 2025
12am Mon, Sep 22 2025
1am Mon, Sep 22 2025
2am Mon, Sep 22 2025
3am Mon, Sep 22 2025
4am Mon, Sep 22 2025
5am Mon, Sep 22 2025
6am Mon, Sep 22 2025
7am Mon, Sep 22 2025
8am Mon, Sep 22 2025
9am Mon, Sep 22 2025
10am Mon, Sep 22 2025
11am Mon, Sep 22 2025
12pm Mon, Sep 22 2025
1pm Mon, Sep 22 2025
2pm Mon, Sep 22 2025
3pm Mon, Sep 22 2025
4pm Mon, Sep 22 2025
5pm Mon, Sep 22 2025
6pm Mon, Sep 22 2025
7pm Mon, Sep 22 2025
8pm Mon, Sep 22 2025
9pm Mon, Sep 22 2025
10pm Mon, Sep 22 2025
11pm Mon, Sep 22 2025
12am Tue, Sep 23 2025
1am Tue, Sep 23 2025
2am Tue, Sep 23 2025
3am Tue, Sep 23 2025
4am Tue, Sep 23 2025
5am Tue, Sep 23 2025
6am Tue, Sep 23 2025
7am Tue, Sep 23 2025
8am Tue, Sep 23 2025
9am Tue, Sep 23 2025
10am Tue, Sep 23 2025
11am Tue, Sep 23 2025
12pm Tue, Sep 23 2025
1pm Tue, Sep 23 2025
2pm Tue, Sep 23 2025
3pm Tue, Sep 23 2025
4pm Tue, Sep 23 2025
5pm Tue, Sep 23 2025
6pm Tue, Sep 23 2025
7pm Tue, Sep 23 2025
8pm Tue, Sep 23 2025
9pm Tue, Sep 23 2025
10pm Tue, Sep 23 2025
11pm Tue, Sep 23 2025
12am Wed, Sep 24 2025
1am Wed, Sep 24 2025
2am Wed, Sep 24 2025
3am Wed, Sep 24 2025
4am Wed, Sep 24 2025
5am Wed, Sep 24 2025
6am Wed, Sep 24 2025
7am Wed, Sep 24 2025
8am Wed, Sep 24 2025
9am Wed, Sep 24 2025
Date
09/19
09/20
Hour (PDT)
22
23
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
Surface Wind (kt)
5
4
4
3
3
3
3
3
3
3
3
3
3
4
4
5
7
8
9
10
10
11
11
11
Wind Dir
W
W
W
W
W
W
W
W
W
W
W
W
W
W
WNW
W
W
WNW
WNW
WNW
WNW
WNW
NW
NW
Gust
Significant Wave Height (ft)
4
4
4
4
4
4
4
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
Swell Height (ft)
4
3
3
3
3
3
3
3
3
3
3
3
3
2
2
2
2
2
2
2
2
2
2
2
Swell Dir
310
310
310
310
310
310
310
310
310
310
310
310
310
310
310
310
310
310
310
300
300
300
300
300
Swell Period (sec)
10
10
10
10
10
10
10
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
Swell 2 Height (ft)
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
Swell 2 Dir
200
200
200
200
200
200
200
200
200
200
200
200
200
210
210
210
210
210
210
210
210
210
210
210
Swell 2 Period (sec)
14
14
14
14
14
14
14
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
Wind Wave Height (ft)
1
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
2
2
2
2
2
Date
09/21
Hour (PDT)
22
23
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
Surface Wind (kt)
11
10
10
10
10
10
10
9
9
9
9
9
9
10
10
10
11
11
11
14
14
14
18
18
Wind Dir
NW
NW
NW
NW
WNW
WNW
WNW
WNW
WNW
WNW
WNW
WNW
WNW
WNW
WNW
WNW
WNW
WNW
WNW
NW
NW
NW
NW
NW
Gust
23
23
Significant Wave Height (ft)
3
3
3
3
3
3
3
3
3
3
3
3
3
4
4
4
4
4
4
5
5
5
5
5
Swell Height (ft)
2
2
2
2
2
2
2
3
3
3
3
3
3
2
2
2
2
2
2
2
2
2
2
2
Swell Dir
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
Swell Period (sec)
9
11
11
11
11
11
11
12
12
12
12
12
12
11
11
11
11
11
11
9
9
9
9
9
Swell 2 Height (ft)
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
Swell 2 Dir
210
200
200
200
200
200
200
210
210
210
210
210
210
210
210
210
210
210
210
210
210
210
210
210
Swell 2 Period (sec)
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
Wind Wave Height (ft)
2
2
2
2
2
2
2
1
1
1
1
1
1
2
2
2
2
2
2
4
4
4
4
4
International System of Units
Forecast Discussion
Marine Point Forecast
Hourly Weather Graph
National Marine Forecasts
Tide Information
River Stage Summary
24 Hour Precipitation Summary
NWS Office Map