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

Tubes surfForecast / Eastern Cape (S) / South Africa

information circle48hr Weather and Surf, issued 1 pm Monday 20 Apr 2026 SAST
Forecast update in hr  min  s Forecast update imminent
Tubes surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Tubes sea temperature is
18.6° C
(Which is 2.7°C colder than average for this time of year)

How big are the waves at Tubes today?

The current surf forecast for Tubes at 4PM is: 4.5m 12s primary swell from a Southwest direction (forecast issued at 01:00pm April 20). An open ocean swell of 0.3m 9s is not directed at the surf break, a second open ocean swell of 0.3m 8s is not directed at the surf break. The wind direction is predicted to be offshore.

Time (SAST) & DateWave HeightWave Period
Morning (20 Apr)16ft (5.0m)12s
Afternoon (20 Apr)16ft (5.0m)12s
Evening (20 Apr)13ft (4.0m)12s

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


Updates in  hr  min  s Forecast update imminent
Monday
20
Tuesday
21
Wednesday
22
Thursday
23
11AM2PM5PM8PM11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM
Rating
(10 max)
2
3
4
5
3
3
3
3
4
3
2
2
2
3
3
3
4
5
6
6
5
5
4
3
Swell
Height Map
Wave Height (m) & direction (?)
5
WSW
5
SW
4.5
SW
4
SW
4
SW
3.5
SW
3.5
SW
3.5
SW
3.5
SW
3.5
SW
4
SW
5
SW
5
SW
5
SW
5
SW
5
SW
5
SW
5
SSW
5
SSW
4.5
SSW
4.5
SSW
4
SSW
4
SSW
3.5
SSW
Period(s) (?)121212121313131313131312121213131415161616161615
Wave
Graph
(?)Metric surfscale
Energy kJ (?)743468926034500950914760427139193858411455067601825576138516882991461069911571111439990872474675931
Wind
(km/h)
40
W
40
WSW
30
WSW
10
NW
10
NNW
10
NNW
10
NNW
10
NNW
15
WNW
25
SW
40
WSW
35
WSW
35
WSW
30
W
30
W
30
W
35
WSW
30
SW
20
SW
5
WSW
5
N
5
N
10
N
10
NNE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
offoffcross-
off
crosscrosscrosscrosscross-
off
offoffcross-
off
cross-
off
cross-
off
cross-
off
cross-
off
offoffoffoffglassglasscross-
on
cross-
on
High Tide
/ height (m)
5:36PM
1.54
5:53AM
1.57
6:21PM
1.41
6:40AM
1.38
7:18PM
1.27
7:43AM
1.20
Low Tide
/ height (m)
11:27AM
0.08
11:39PM
0.19
12:09PM
0.22
12:26AM
0.34
12:59PM
0.37
1:28AM
0.51
Monday
20
Tuesday
21
Wednesday
22
Thursday
23
Sunrise-------6:47-------6:47-------6:48
Sunset--5:51-------5:50-------5:49-----
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
part cloud
part cloud
clear
part cloud
part cloud
part cloud
cloud
clear
Rain (mm)
------------------------
Temp. °C181917161414141420221816161515151717171616161514
Feels °C (?)91010141111111116151199999911131515141311
  • 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 Tubes 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