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Surf Forecasts:

Cape St Martin surfForecast / West Coast / South Africa

information circle12 Day Weather and Surf, issued 1 am Thursday 18 Sep 2025 SAST
Forecast update in hr  min  s Forecast update imminent
Cape St Martin surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Cape St Martin sea temperature is
13.5° C
 (Which is 2.1°C colder than average for this time of year)

Best Forecast Surf Conditions for Cape St Martin this week:

The surf forecast for Cape St Martin over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 18) at 8AM. The primary swell is predicted to be 2.2m and 11s period with a secondary swell of 0.9m and 10s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Cape St Martin in the next 12 days are 3.0m 14s and forecast to arrive on Wednesday (Sep 24) at 11AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Wednesday (Sep 24) at 2AM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Thu 18th Sep)7ft (2.2m) 11s
Best Surf11AM (Wed 24th Sep)10ft (3.0m) 14s
Most Powerful11AM (Wed 24th Sep)10ft (3.0m) 14s

Table - best surf conditions forecast for Cape St Martin over the next 12 days.

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Mostly dry. Warm (max 20°C on Fri afternoon, min 11°C on Thu morning). Winds decreasing (fresh winds from the S on Thu afternoon, light winds from the SSE by Fri morning).

Days 3-6 Weather Summary Mostly dry. Very mild (max 16°C on Mon afternoon, min 11°C on Tue night). Winds increasing (light winds from the ESE on Sun morning, strong winds from the S by Tue afternoon).

Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
4
3
3
3
2
1
1
1
1
1
0
0
1
0
1
2
1
2
!
1
3
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
2.1
SSW
1.8
SSW
1.5
S
1.8
S
1.6
S
1.3
SSW
0.9
SSW
0.7
S
0.7
SSW
0.6
SSW
0.6
W
0.4
SW
0.8
W
0.9
W
0.6
SW
0.9
SW
1.1
WSW
1.3
SW
3
SW
2.4
SW
2.1
SW
Period(s) (?)111111121210911888126613121116141413
Wave
Graph
(?)Metric surfscale
Energy kJ (?)1053743566879699377156119624442374664130209297834385921711544
Wind
(km/h)
10
SSE
30
S
20
SSE
5
SSE
20
SSW
10
W
15
NW
10
W
10
SSE
5
WNW
15
SW
20
WNW
5
NW
10
WSW
15
S
15
WSW
40
S
35
SSE
30
SSE
45
S
30
SSE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offoffoffoffcross-
off		crossoncrossoffcross-
on		cross-
off		cross-
on		cross-
on		crossoffcross-
off		offoffoffcross-
off		off
High Tide
/ height (m)
1:30PM
1.43
1:48AM
1.41
2:05PM
1.54
2:22AM
1.48
2:36PM
1.62
2:53AM
1.53
3:05PM
1.66
3:22AM
1.55
3:32PM
1.67
3:50AM
1.55
3:59PM
1.64
4:17AM
1.51
4:25PM
1.58
4:44AM
1.45
Low Tide
/ height (m)
7:48PM
0.27
7:58AM
0.23
8:22PM
0.18
8:29AM
0.16
8:53PM
0.11
8:58AM
0.13
9:21PM
0.08
9:25AM
0.12
9:48PM
0.08
9:52AM
0.14
10:14PM
0.10
10:18AM
0.19
10:39PM
0.16
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Sunrise6:43--6:41--6:41--6:39--6:37--6:37--6:35--
Sunset-6:40--6:42--6:42--6:43--6:44--6:44--6:45-
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
cloud
part cloud
part cloud
clear
clear
clear
part cloud
cloud
part cloud
clear
clear
clear
clear
Rain (mm)
---------------------
Temp. °C141613182018151615151515151615151513131512
Feels °C (?)1111716171413151314131314141212115673
  • 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

Eyeball surf reportRecent Eyeball Surf Reports for West Coast

  1. weather stationWind Update Continuing clean conditions at Cape St Martin (calm at Langebaanweg 36 km from Cape St Martin). 2.0m 12s groundswell from the SSW with a 1.0m 10s swell from the W. 2 swells combining to make bigger set waves.

    2 hours 14 minutes ago Cape St Martin
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36 km away, 2 h 14 min ago

0 km/h
N
0.0
13.5
Air / Water (°C)
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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 St Martin 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.

View detailed surf forecast for Cape St Martin at:
surf-forecast.com

Information about the Cape St Martin Surf forecast

The above surf forecast table for Cape St Martin provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Cape St Martin can be found by selecting the local surf guide option on the grey menu. Our Cape St Martin surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Cape St Martin) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Cape St Martin may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Cape St Martin is 33 km (20 miles) from the city of Saldanha. If you plan a holiday in West Coast, look for hotels and other accommodation in Saldanha. Saldanha has rooms for a wide range of budgets as well as car hire and transport links.

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