Francis Beach surfForecast / CAL – San Mateo / USA

information circle48hr Weather and Surf, issued 4 am Monday 18 May 2026 PDT
Forecast update in hr  min  s Forecast update imminent
Francis Beach surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Francis Beach sea temperature is
12.7° C
(Which is slightly warmer than usual)

How big are the waves at Francis Beach today?

The current surf forecast for Francis Beach at 8AM is: 1.8m 10s primary swell from a West-northwest direction and 0.2m 13s secondary swell from a South-southwest direction (forecast issued at 04:00am May 18). An open ocean swell of 0.3m 3s is not directed at the surf break. The wind direction is predicted to be cross-shore.

Time (PDT) & DateWave HeightWave Period
Morning (18 May)5.5ft (1.7m)10s
Afternoon (18 May)6ft (1.9m)10s
Evening (18 May)6ft (1.9m)9s

Table - waves today at Francis Beach. (Swell directed towards the surf break)


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Warm (max 21°C on Mon morning, min 9°C on Wed night). Wind will be generally light.

Monday
18
Tuesday
19
Wednesday
20
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
Rating
(10 max)
!
0
0
1
0
0
0
2
2
3
3
2
0
1
1
2
2
3
2
2
1
2
1
2
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
3
WNW
11
2.5
WNW
10
1.8
WNW
10
1.6
WNW
10
1.9
WNW
10
1.2
WNW
10
1.9
WNW
9
2
WNW
9
1.8
WNW
10
1.7
WNW
10
1.6
WNW
10
1.5
WNW
10
1.4
WNW
10
1.8
WNW
10
1.3
WNW
10
1.2
WNW
10
1.4
WNW
10
1.5
WNW
10
1.5
WNW
10
1.5
WNW
10
1.6
WNW
10
1.3
WNW
10
1.3
WNW
10
1.8
WNW
10
Wave Graph
Metric surfscale
Energy kJ
1985
1415
653
510
741
298
575
643
611
563
482
428
394
661
325
280
370
419
428
437
500
312
325
676
Wind (km/h)
30
NNW
35
N
25
N
20
N
25
NW
25
NW
15
NW
10
NW
10
NW
5
NW
5
N
10
NNW
15
NW
20
NW
15
NW
5
NW
5
WSW
5
WSW
5
WSW
10
SW
10
SW
10
WNW
15
NW
10
WNW
cross
cross
cross
cross
cross-on
cross-on
cross-on
cross-on
cross-on
glassy
glassy
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
glassy
cross-on
cross-on
cross-on
on
cross-on
cross-on
High Tide
11:16PM1.96m
1:45PM1.33m
00:06AM1.92m
2:42PM1.33m
00:59AM1.83m
3:40PM1.35m
Low Tide
6:32AM-0.61m
6:14PM0.85m
7:25AM-0.57m
7:14PM0.89m
8:20AM-0.47m
8:24PM0.90m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:58
5:56
5:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:14
8:15
8:15
Temp °C
18
17
18
21
20
16
12
11
11
12
16
20
21
17
12
11
11
10
11
14
15
13
10
10
9
8
11
14
13
10
8
9
9
11
15
17
16
13
9
9
10
9
10
13
13
11
7
8
Swell 1
Height (m)
Direction
Period (s)
2.3
WNW
11
2.1
WNW
10
1.8
WNW
10
1.6
WNW
10
1.4
WNW
10
1.2
WNW
10
1.9
WNW
9
2
WNW
9
1.8
WNW
10
1.7
WNW
10
1.6
WNW
10
1.5
WNW
10
1.4
WNW
10
1.4
WNW
10
1.3
WNW
10
1.2
WNW
10
1.4
WNW
10
1.5
WNW
10
1.5
WNW
10
1.5
WNW
10
1.6
WNW
10
1.3
WNW
10
1.3
WNW
10
1.8
WNW
10
Energy kJ
1192
882
653
510
435
298
575
643
611
563
482
428
394
410
325
269
370
419
428
437
500
312
325
676
Swell 2
Height (m)
Direction
Period (s)
0.4
SW
13
0.2
SSW
13
0.2
SSW
13
0.3
SW
16
0.3
SW
16
0.3
SW
16
0.3
W
18
0.4
WNW
17
0.5
W
16
0.6
W
16
0.7
W
16
0.7
W
15
0.8
W
14
0.9
W
14
0.9
W
14
0.9
W
13
0.9
W
13
0.8
W
13
0.8
W
13
0.5
W
13
0.3
SW
16
0.8
W
12
0.8
W
12
0.4
SW
15
Energy kJ
44
17
17
42
41
42
55
96
132
186
239
212
268
333
320
280
268
209
209
87
40
171
171
80
Swell 3
Height (m)
Direction
Period (s)
0.2
SSW
18
0.2
SSW
18
0.2
SSW
17
0.2
SSW
13
0.2
SSW
13
0.2
W
18
0.2
WSW
17
0.2
WSW
16
0.4
SW
16
0.2
SSW
15
0.4
SW
15
0.3
SW
16
0.3
SW
16
0.4
SW
16
0.3
SW
16
0.3
SW
16
0.3
SW
16
0.3
SW
21
0.4
SW
21
0.3
SW
21
0.2
SSW
13
0.4
SW
16
0.4
SW
15
0.2
SSW
13
Energy kJ
31
30
28
17
16
25
29
27
66
22
59
42
43
64
42
42
42
72
162
72
18
87
84
18
Wind waves
Height (m)
Direction
Period (s)
3
WNW
11
2.5
WNW
10
0.3
NNE
3
1.9
WNW
10
1
WNW
6
1.8
WNW
10
Energy kJ
1985
1415
2
741
68
661
Nearest Offshore or Glassy
Rating
(10 max)
3
3
3
2
2
2
4
4
3
3
3
3
3
3
3
3
3
3
3
3
1
3
2
3
Distance (km)
66
65
55
55
66
66
66
32
21
0
0
7
55
66
57
32
14
0
14
13
78
102
40
32
Best forecast wave conditions in San Mateo
Rating
(10 max)
4
3
3
3
3
3
3
4
3
3
3
Best forecast wave conditions in United States
Rating
(10 max)
4
4
4
4
4
4
4
4
4
3
4
3
4
3
4
4
4
4
4
3
4
4
3
3
Header Global
Rating
(10 max)
4
4
4
5
4
4
4
4
4
4
4
4
4
4
5
5
4
4
4
5
5
5
4
5
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

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