20 April 2026: Tsunami Alert Issued for NE Japan

A magnitude-7.4 earthquake off the coast of Sanriku has triggered a tsunami warning. latest updates

Cape St Martin surfForecast / West Coast / South Africa

information circle48hr Weather and Surf, issued 7 am Monday 20 Apr 2026 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
14.7° C
(Which is 2.7°C colder than average for this time of year)

How big are the waves at Cape St Martin today?

The current surf forecast for Cape St Martin at 3PM is: 4.5m 14s primary swell from a Southwest direction (forecast issued at 07:00am April 20). The wind direction is predicted to be cross-onshore and the swell rating is 11.

Time (SAST) & DateWave HeightWave Period
Morning (20 Apr)15ft (4.5m)13s
Afternoon (20 Apr)15ft (4.5m)14s
Evening (20 Apr)13ft (4.0m)14s

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


Updates in  hr  min  s Forecast update imminent
Monday
20
Tuesday
21
Wednesday
22
Thu
23
5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM
Rating
(10 max)
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
Swell
Height Map
Wave Height (m) & direction (?)
4.5
WSW
4.5
SW
4.5
SW
4.5
SW
4
SW
4
SW
3.5
SW
3.5
SW
3
SW
3
SW
3
SW
3
SW
3
SSW
3.5
SSW
3.5
SSW
3.5
SSW
4
SSW
4
SSW
4.5
SSW
4.5
SSW
4.5
SSW
4
SSW
4
SSW
4
SSW
Period(s) (?)121214141414141313131313121212121314151515161515
Wave
Graph
(?)Metric surfscale
Energy kJ (?)602058857286699461975568483940033475299526362445261331313202361043956471781783038752832973716313
Wind
(km/h)
25
WSW
15
SW
15
W
15
WNW
15
WNW
10
WNW
15
NNW
15
NNW
10
NW
15
NW
15
NNW
15
NNW
10
SSW
20
SSE
20
SSE
15
SSE
25
SSE
25
SSE
20
SE
15
SSE
20
SSE
20
S
20
SSE
20
SE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscross-
off
cross-
on
cross-
on
cross-
on
cross-
on
ononononononcross-
off
offoffoffoffoffoffoffoffoffoffoff
High Tide
/ height (m)
5:23PM
1.51
5:39AM
1.52
6:14PM
1.40
6:34AM
1.35
7:17PM
1.28
Low Tide
/ height (m)
11:09AM
0.07
11:26PM
0.22
11:56AM
0.21
12:19AM
0.35
12:52PM
0.36
1:30AM
0.48
Monday
20
Tuesday
21
Wednesday
22
Thu
23
Sunrise-7:11-------7:13-------7:13------
Sunset----6:21-------6:20-------6:19---
cloud
part cloud
part cloud
part cloud
clear
cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
cloud
part cloud
clear
clear
clear
clear
cloud
cloud
part cloud
part cloud
clear
clear
Rain (mm)
------------------------
Temp. °C161516161515161616161616161616161614151718181817
Feels °C (?)11111212121313131313131315121212119101314141312
  • 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

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.


Nearest locationNearest
Nearest locationNearest
Nearest locationNearest