Onrus Surf Break

Lat Long: 34.41° S 19.17° E

Onrus Surf Forecast and Surf Report

Issued: 1 pm 28 Jul 2026 (local time)

Forecast update in  hr  min

Today's Onrus sea temperature is
15.4° C
0.2° 

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


Onrus surf forecast from 28 Jul 2026:

  • Best quality surf: Monday 3 Aug, 2AM (local time) - 4ft (1.2m), 12s period, SW swell with glassy winds.
  • Most powerful swell: Tuesday 28 Jul, 8PM (local time) - 7ft (2.2m), 14s period, SW swell with 1,811 kJ wave energy.
  • Next surfable swell (1★+): Saturday 1 Aug, 11PM (local time) - 3.5ft (1.1m), 13s 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 Saturday (Aug 01) at 11PM. The primary swell is predicted to be 1.1m and 13s period. 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 2.2m 14s and forecast to arrive on Tuesday (Jul 28) at 8PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 8s period and expected on Friday (Jul 31) at 5AM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+)11PM (Sat 1st Aug)3.5ft (1.1m) 13s
Best Surf 2AM (Mon 3rd Aug)4ft (1.2m) 12s
Most Powerful 8PM (Tue 28th Jul)7ft (2.2m) 14s

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


The Lowdown

Alright, let’s talk about Onrus. The next sixteen days are a proper rollercoaster. The first week is mostly a write-off with the wind, then we get a bit of clean, small stuff, and then it’s all about the serious, oversized groundswell. It’s a waiting game.

The first call is on the 28th of July, Tuesday afternoon. It’s not good. We’ve got a 8ft swell from the southwest, but the wind is screaming out of the east at 25 mph, cross-on. The water temp is 60°, which is average for the season. The combined energy is huge, but it’s all just a choppy mess.

Wednesday the 29th and Thursday the 30th are the same story. The swell drops a bit, but the wind is still cross-on. It’s just a groan.

Friday the 31st of July morning is a little better. The swell is down to 4ft from the southwest, and the wind goes light out of the east-northeast, just a light cross-shore. The energy is weak. It’s marginal, but you might find a few.

Saturday the 1st of August morning is similar. A 4ft south-west swell with a light north-east breeze. Still marginal.

Now, the first real standout is Sunday the 2nd of August. The morning is looking glassy. The wind swings to the west-northwest at just 3 mph, and the report says “glassy.” The swell is a small 4ft from the southwest, but with a 13-second period, it has some push. The energy is weak, but for a Sunday morning with clean conditions, it’s the best we’ve seen. The afternoon goes cross-offshore with a light westerly, staying clean. This is the pick of the first week.

Monday the 3rd of August is interesting. The morning has a long-period 3ft swell from the west-southwest with a 16-second period. The energy is moderate. The wind is light and onshore from the southeast. This is a groundswell, so it might break a bit straight, but Onrus is a reef, so it should handle it. It’s a marginal call.

Then the big stuff hits. Wednesday the 5th of August is massive. The morning has a 10ft SW swell with a 14-second period, and the wind is a moderate offshore from the west-northwest. The energy is huge. The afternoon goes even bigger, with a 13ft swell from the west-southwest and a fresh offshore wind. The energy is massive. This is too big for this break. It’s a clean, powerful beast for experts only.

The next real standout is further out. Wednesday the 12th of August morning. The swell has dropped to a clean 5ft from the south with an 11-second period, and the wind is glassy out of the south-southeast. The energy is moderate. The report says it’s excellent for experienced surfers. That’s a rare call. The afternoon sees a 4ft swell from the SW with a very long 17-second period, but it’s a bit cross-on. That morning session is the second true standout.

The gap between the 2nd of August and the 12th of August is filled with either too much wind or too much swell. It’s a long wait.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 18°C on Wed afternoon, min 10°C on Tue night). Winds decreasing (strong winds from the E on Tue afternoon, light winds from the ENE by Fri morning).

Days 5-7 Weather Summary

Mostly dry. Warm (max 24°C on Sat afternoon, min 13°C on Mon morning). Wind will be generally light.

Tue
28
Wednesday
29
Thursday
30
Friday
31
Saturday
1
Sunday
2
Monday
3
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
1
0
0
0
1
1
0
1
2
1
2
2
2
3
2
2
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.3
SW
14
2
SSW
13
1.9
SSW
13
1.8
SSW
13
1.6
SW
13
1.4
SW
13
1.3
SW
13
1.3
SW
13
1.1
SW
12
1
SW
12
0.9
SW
11
1.1
SW
14
1.1
SW
13
1.1
SW
13
1.1
SW
13
1.1
SW
12
1.2
SW
12
0.9
WSW
16
1.3
WSW
14
1.7
WSW
13
Wave Graph
Metric surfscale
Energy kJ
2027
1422
1264
1169
919
680
609
545
373
278
182
514
431
431
405
379
423
447
647
1014
Wind (km/h)
40
E
30
E
25
ENE
20
E
20
ENE
15
ENE
20
E
15
ENE
10
ENE
10
E
10
NE
10
NE
5
ESE
10
N
5
WNW
10
WSW
5
NW
5
SE
10
SSE
10
ENE
Wind State
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross
cross-on
cross
cross
on
cross-off
glassy
cross-off
glassy
on
cross-on
cross-on
High Tide
3:04PM1.39m
3:07AM1.42m
3:34PM1.47m
3:39AM1.46m
4:04PM1.53m
4:10AM1.48m
4:34PM1.57m
4:41AM1.47m
5:03PM1.58m
5:13AM1.44m
5:34PM1.57m
5:47AM1.39m
6:08PM1.53m
Low Tide
9:10PM0.33m
9:24AM0.19m
9:42PM0.28m
9:52AM0.14m
10:12PM0.24m
10:20AM0.12m
10:43PM0.22m
10:48AM0.13m
11:14PM0.21m
11:17AM0.16m
11:47PM0.23m
11:49AM0.22m
00:25AM0.27m
clear
clear
clear
clear
part cloud
part cloud
clear
part cloud
clear
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:39
7:37
7:37
7:37
7:35
7:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:59
6:00
6:00
6:00
6:01
6:02
6:02
 mm
Temp °C
17
13
14
18
14
14
18
14
18
21
18
21
24
20
21
21
16
15
18
15
Feels °C
9
6
9
14
10
10
14
11
14
18
15
17
21
18
19
18
14
14
16
13
  • Map Icons:
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  • 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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