Onrus Surf Break

Lat Long: 34.41° S 19.17° E

Onrus Surf Forecast and Surf Report

Issued: 1 pm 17 Sep 2026 (local time)

Forecast update in  hr  min

Today's Onrus sea temperature is
13.8°C
1.9° 

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


Onrus surf forecast from 17 Sep 2026:

  • Best quality surf: Tuesday 22 Sep, 5AM (local time) - 3.5ft (1.1m), 11s period, SW swell with cross-offshore winds.
  • Most powerful swell: Thursday 24 Sep, 11AM (local time) - 8ft (2.5m), 13s period, SW swell with 2,209 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 22 Sep, 5AM (local time) - 3.5ft (1.1m), 11s period with SW swell.

Best Forecast Surf Conditions for Onrus this week:

The surf forecast for Onrus over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Sep 22) at 5AM. The primary swell is predicted to be 1.1m and 11s period with a secondary swell of 0.3m and 14s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Onrus in the next 16 days are 2.5m 13s and forecast to arrive on Thursday (Sep 24) at 11AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 6s period and expected on Thursday (Sep 24) at 5AM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Tue 22nd Sep)3.5ft (1.1m) 11s
Best Surf 5AM (Tue 22nd Sep)3.5ft (1.1m) 11s
Most Powerful11AM (Thu 24th Sep)8ft (2.5m) 13s

Table - best surf conditions forecast for Onrus over the next 16 days.


Short Range Forecast

Mostly dry. Warm (max 21°C on Sun morning, min 11°C on Thu night). Winds decreasing (strong winds from the ESE on Fri afternoon, light winds from the E by Sun morning).

Days 5-7 Weather Summary

Light rain (total 2mm), mostly falling on Tue morning. Warm (max 27°C on Mon afternoon, min 16°C on Sun night). Mainly fresh winds.

Thu
17
Friday
18
Saturday
19
Sunday
20
Monday
21
Tuesday
22
Wednesday
23
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
0
0
1
0
0
0
0
1
1
1
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.8
SW
12
1.9
SW
11
1.7
SW
11
1.7
SW
13
1.6
SW
12
1.2
SW
12
1
SW
14
2.2
SW
14
1.9
SW
13
1.7
WSW
13
1.6
SW
12
1.5
SW
12
1.1
SW
12
1.1
SW
11
1.1
SW
11
0.9
SSW
12
1.3
SW
7
2.4
SW
11
2.5
SSW
11
1.9
SW
11
Wave Graph
Metric surfscale
Energy kJ
928
940
708
940
724
396
404
1744
1164
890
773
614
343
308
258
251
189
1298
1771
860
Wind (km/h)
35
ESE
30
E
35
E
45
E
25
E
20
ESE
30
ESE
25
E
20
E
25
SE
20
ENE
20
E
15
ESE
15
NE
25
W
25
WSW
15
SE
25
ESE
25
E
25
ESE
Wind State
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
cross-on
cross-on
cross-on
cross
cross-off
cross-off
on
on
cross-on
on
High Tide
6:32PM1.17m
7:03AM1.04m
7:21PM1.04m
8:35AM0.94m
9:27PM0.96m
11:23AM0.98m
11:40PM1.02m
12:29PM1.10m
00:36AM1.13m
1:05PM1.24m
1:13AM1.25m
1:34PM1.38m
1:45AM1.37m
Low Tide
00:49AM0.55m
12:56PM0.65m
1:53AM0.67m
2:37PM0.76m
4:44AM0.69m
5:48PM0.72m
6:14AM0.59m
6:45PM0.59m
6:54AM0.47m
7:19PM0.46m
7:25AM0.35m
7:48PM0.33m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
rain showers
part cloud
cloud
cloud
light rain
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:39
6:37
6:35
6:35
6:33
6:31
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:35
6:36
6:37
6:37
6:37
6:38
6:39
 mm
2
3
3
Temp °C
16
13
17
18
14
17
20
15
21
25
18
22
27
22
21
20
17
16
16
15
Feels °C
8
7
9
9
8
13
15
11
18
22
16
20
26
22
21
16
17
13
12
11
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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Information about the Onrus Surf forecast

The above surf forecast table for Onrus provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Onrus can be found by selecting the local surf guide option on the grey menu. Our Onrus 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 (Onrus) 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 Onrus 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.

Onrus is 6 km (4 miles) from Hermanus. If you plan a holiday in Overberg, look for hotels and other accommodation in Hermanus. Hermanus has rooms for a wide range of budgets as well as car hire and transport links.

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