Francis Beach surfForecast / CAL – San Mateo / USA

information circle48hr Weather and Surf, issued 10 pm 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
12.6° C
(Which is normal for this time of year)

How big are the waves at Francis Beach today?

The current surf forecast for Francis Beach at 6AM is: 1.6m 10s primary swell from a West-northwest direction and 0.7m 16s secondary swell from a West direction (forecast issued at 10:00pm May 18). The wind direction is predicted to be glassy and the swell rating is 3.

Time (PDT) & DateWave HeightWave Period
Morning (19 May)5ft (1.5m)10s
Afternoon (19 May)4.5ft (1.4m)10s
Evening (19 May)3ft (0.9m)14s

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 22°C on Tue afternoon, min 9°C on Wed night). Wind will be generally light.

Mon
18
Tuesday
19
Wednesday
20
Thursday
21
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
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
Rating
(10 max)
0
2
2
3
3
2
0
0
1
2
2
3
2
2
1
2
2
2
2
3
3
2
1
1
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
1.7
WNW
10
1.8
WNW
9
1.7
WNW
10
1.6
WNW
10
1.6
WNW
10
1.4
WNW
10
1.4
WNW
10
1.7
WNW
10
0.9
W
14
1.2
WNW
10
1.3
WNW
10
1.4
WNW
10
1.4
WNW
10
1.4
WNW
10
1.6
WNW
10
1.2
WNW
10
0.9
WNW
12
1.4
WNW
9
1.8
WNW
10
1.7
WNW
10
1.6
WNW
11
1.5
WNW
11
1.4
WNW
11
1.3
WNW
11
Wave Graph
Metric surfscale
Energy kJ
533
554
540
472
472
370
386
565
320
284
305
370
370
370
500
264
237
348
690
619
575
496
436
379
Wind (km/h)
15
NW
10
NW
5
NW
5
NW
5
N
5
NNW
15
NW
20
NW
10
NW
5
NW
5
WSW
5
WSW
5
W
10
W
10
W
10
W
10
WNW
5
WNW
5
WNW
5
WSW
5
WSW
10
WSW
10
W
10
WSW
cross-on
cross-on
cross-on
glassy
glassy
cross-on
cross-on
cross-on
cross-on
cross-on
on
glassy
on
on
on
on
cross-on
cross-on
on
glassy
glassy
cross-on
on
on
High Tide
00:06AM1.92m
2:42PM1.33m
00:59AM1.83m
3:40PM1.35m
1:58AM1.69m
4:37PM1.38m
Low Tide
6:14PM0.85m
7:25AM-0.57m
7:14PM0.89m
8:20AM-0.47m
8:24PM0.90m
9:17AM-0.34m
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
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:56
5:56
5:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:14
8:15
8:15
8:15
Temp °C
14
12
12
12
15
20
22
17
13
11
11
10
12
14
15
15
11
10
10
9
11
15
15
14
10
10
10
11
13
17
17
12
10
9
10
9
11
12
13
13
9
8
9
8
10
14
13
12
Swell 1
Height (m)
Direction
Period (s)
1.7
WNW
10
1.8
WNW
9
1.7
WNW
10
1.6
WNW
10
1.6
WNW
10
1.4
WNW
10
1.4
WNW
10
1.3
WNW
10
1.2
WNW
10
1.2
WNW
10
1.3
WNW
10
1.4
WNW
10
1.4
WNW
10
1.4
WNW
10
1.6
WNW
10
1.2
WNW
10
1.2
WNW
9
1.4
WNW
9
1.8
WNW
10
1.7
WNW
10
1.6
WNW
11
1.5
WNW
11
1.4
WNW
11
1.3
WNW
11
Energy kJ
533
554
540
472
472
370
386
325
269
264
305
370
370
370
500
264
237
348
690
619
575
496
436
379
Swell 2
Height (m)
Direction
Period (s)
0.3
W
18
0.4
WNW
17
0.6
W
16
0.7
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
0.8
W
13
0.8
W
13
0.8
W
13
0.8
W
13
0.3
SW
16
0.8
W
12
0.9
WNW
12
0.9
WNW
12
0.3
SW
15
0.4
SW
19
0.5
SW
19
0.4
SW
19
0.3
SW
15
0.4
SW
15
Energy kJ
55
96
188
251
239
209
268
333
320
284
215
209
212
209
40
174
228
224
35
133
184
133
36
80
Swell 3
Height (m)
Direction
Period (s)
0.3
SW
17
0.2
WSW
17
0.3
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
0.4
SW
15
0.2
SSW
13
0.3
SW
15
0.3
SW
15
0.3
SW
15
0.3
SW
19
0.2
SSW
13
Energy kJ
46
27
42
22
58
42
43
64
42
42
42
72
162
72
18
87
84
80
17
35
36
36
59
16
Wind waves
Height (m)
Direction
Period (s)
1.7
WNW
10
Energy kJ
565
Nearest Offshore or Glassy
Rating
(10 max)
3
3
3
3
3
3
3
3
3
3
3
3
2
2
2
2
2
3
2
3
3
2
4
4
Distance (km)
32
32
21
0
0
7
55
66
55
32
14
0
40
40
40
55
40
32
39
0
0
40
318
257
Best forecast wave conditions in San Mateo
Rating
(10 max)
3
3
3
3
3
4
3
3
3
3
2
3
3
Best forecast wave conditions in United States
Rating
(10 max)
4
4
4
4
4
4
4
4
4
4
4
3
4
4
2
4
4
3
3
3
3
3
4
4
Header Global
Rating
(10 max)
4
4
4
4
4
4
4
5
5
5
4
4
4
5
5
5
4
5
4
4
4
5
4
4
  • 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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