Cape Sebastian Surf Break

Lat Long: 42.32° N 124.42° W

Cape Sebastian 48 hour detailed Surf Forecast

Issued: 4 pm 18 Aug 2026 (local time)

Forecast update in  hr  min

Today's Cape Sebastian sea temperature is
12.9° C
1.3° 

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 (18 Aug):

  • Afternoon surf: Afternoon surf (18 Aug, local time) - 2ft (0.6m), 14s period with SSW swell.
  • Evening surf: Evening surf (18 Aug, local time) - 2.5ft (0.7m), 15s period with SW swell.

The current surf forecast for Cape Sebastian at 11PM is: 0.7m 15s primary swell from a Southwest direction and 0.6m 13s secondary swell from a West-northwest direction, 1.4m 6s secondary swell from a Northwest direction (forecast issued at 04:00pm August 18). The wind direction is predicted to be offshore and the swell rating is 3.

Time (PDT) & DateWave HeightWave Period
Morning (18 Aug)--
Afternoon (18 Aug)2ft (0.6m)14s
Evening (18 Aug)2.5ft (0.7m)15s

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


Short Range Forecast

Mostly dry. Warm (max 20°C on Wed morning, min 13°C on Wed night). Winds decreasing (fresh winds from the NNW on Tue afternoon, light winds from the NNW by Thu morning).

Tue
18
Wednesday
19
Thursday
20
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
3
3
2
3
1
0
1
1
3
3
3
3
2
2
2
2
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.6
SSW
14
0.6
SSW
14
0.7
SW
14
0.7
SW
15
0.8
SSW
16
0.8
SSW
16
0.8
SSW
16
0.9
WNW
12
0.9
WNW
12
0.7
SW
16
0.9
WNW
12
0.8
SSW
15
0.8
SSW
15
0.8
SSW
15
0.8
SSW
15
0.9
WNW
11
0.9
WNW
11
0.9
WNW
11
0.9
WNW
11
0.7
SSW
14
Wave Graph
Metric surfscale
Energy kJ
131
133
211
236
322
326
322
258
237
245
233
272
288
288
278
214
210
206
191
173
Wind (km/h)
25
NNW
30
NNW
30
N
20
N
20
N
20
N
20
N
25
NNW
30
NNW
25
NNW
20
NNW
10
NNE
5
N
10
NNW
5
NNW
10
NW
15
NW
15
NNW
10
NNW
10
NNW
Wind State
cross-off
cross-off
cross-off
off
off
cross-off
off
cross-off
cross-off
cross-off
cross-off
off
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
4:18PM2.63m
5:38AM1.92m
4:59PM2.54m
7:07AM1.84m
5:49PM2.47m
Low Tide
11:21PM0.84m
10:29AM1.43m
00:26AM0.86m
11:14AM1.60m
part cloud
clear
clear
clear
clear
cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:28
6:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:14
8:13
8:10
 mm
Temp °C
19
19
17
15
14
15
16
20
20
18
16
14
13
13
14
16
17
17
15
14
Feels °C
16
14
12
11
10
12
13
16
16
14
13
14
13
12
14
15
15
15
14
13
  • 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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