Cape Sebastian Surf Break

Lat Long: 42.32° N 124.42° W

Cape Sebastian 48 hour detailed Surf Forecast

Issued: 4 am 20 Sep 2026 (local time)

Forecast update in  hr  min

Today's Cape Sebastian sea temperature is
13.5°C
0.3° 

Cape Sebastian surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at Cape Sebastian today (20 Sep):

  • Morning surf: Morning surf (20 Sep, local time) - 2.5ft (0.8m), 18s period with SW swell.
  • Afternoon surf: Afternoon surf (20 Sep, local time) - 2.5ft (0.8m), 18s period with SW swell.
  • Evening surf: Evening surf (20 Sep, local time) - 2.5ft (0.8m), 19s period with SW swell.

The current surf forecast for Cape Sebastian at 12PM is: 0.7m 18s primary swell from a Southwest direction and 0.3m 13s secondary swell from a South-southwest direction (forecast issued at 04:00am September 20). An open ocean swell of 1.1m 6s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (PDT) & DateWave HeightWave Period
Morning (20 Sep)2.5ft (0.8m)18s
Afternoon (20 Sep)2.5ft (0.8m)18s
Evening (20 Sep)2.5ft (0.8m)19s

Table - waves today at Cape Sebastian. (Swell directed towards the surf break)


Short Range Forecast

Mostly dry. Very mild (max 18°C on Mon afternoon, min 13°C on Sun morning). Winds increasing (light winds from the N on Sun night, fresh winds from the NNW by Tue afternoon).

Sunday
20
Monday
21
Tuesday
22
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)
2
2
2
1
0
1
2
3
2
1
2
1
1
1
2
3
4
4
4
2
2
1
1
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.8
SW
18
0.8
SW
18
0.8
SW
18
0.7
SW
18
0.7
SW
18
0.8
SW
18
0.8
SW
19
0.8
SW
18
0.8
SW
18
0.8
SW
18
0.8
SW
17
0.8
SW
17
0.8
SW
17
0.8
SW
17
1.1
WNW
14
1.4
WNW
14
1.6
WNW
13
1.7
WNW
13
1.7
WNW
12
1.7
WNW
12
1.6
WNW
12
1.5
WNW
12
1.4
WNW
12
1.4
WNW
11
Wave Graph
Metric surfscale
Energy kJ
370
375
375
314
318
388
414
473
366
366
362
427
418
408
515
690
837
943
885
787
692
605
550
504
Wind (km/h)
15
N
15
N
15
N
20
NNW
25
NNW
25
NNW
20
NNW
15
N
10
N
15
N
20
N
25
NNW
30
NNW
35
NNW
30
N
20
N
20
N
25
N
25
N
30
NNW
35
NNW
35
NNW
30
N
20
NNE
Wind State
cross-off
cross-off
off
cross-off
cross-off
cross-off
cross-off
off
off
cross-off
off
cross-off
cross-off
cross-off
cross-off
cross-off
off
off
off
cross-off
cross-off
cross-off
cross-off
off
High Tide
9:24AM1.99m
7:17PM2.31m
10:03AM2.09m
8:26PM2.35m
10:30AM2.19m
9:23PM2.42m
Low Tide
1:56AM0.84m
1:34PM1.78m
2:54AM0.78m
2:49PM1.68m
3:39AM0.71m
3:42PM1.53m
part cloud
part cloud
clear
clear
part cloud
clear
clear
clear
cloud
part cloud
clear
clear
part cloud
part cloud
clear
clear
part cloud
part cloud
cloud
cloud
clear
clear
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:01
7:03
7:03
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:19
7:16
7:15
 mm
Temp °C
13
13
13
17
17
16
14
13
13
13
13
17
18
18
16
14
13
13
14
17
18
18
15
14
Feels °C
11
11
11
14
13
12
11
11
12
11
10
13
13
12
11
10
9
9
10
12
11
11
10
10
  • 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
How to use the Wavefinder 

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Cape Sebastian surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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