Onrus Surf Break

Lat Long: 34.41° S 19.17° E

Onrus Surf Forecast and Surf Report

Issued: 7 am 02 Aug 2026 (local time)

Forecast update in  hr  min

Today's Onrus sea temperature is
15.3° C
0.3° 

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


Onrus surf forecast from 2 Aug 2026:

  • Best quality surf: Wednesday 5 Aug, 8PM (local time) - 10ft (3.0m), 15s period, WSW swell with offshore winds.
  • Most powerful swell: Wednesday 5 Aug, 11PM (local time) - 10ft (3.0m), 14s period, SW swell with 4,010 kJ wave energy.
  • Next surfable swell (1★+): Sunday 2 Aug, 5PM (local time) - 3.5ft (1.1m), 12s 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 Sunday (Aug 02) at 5PM. The primary swell is predicted to be 1.1m and 12s period with a secondary swell of 0.5m and 16s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Onrus in the next 16 days are 3.0m 14s and forecast to arrive on Wednesday (Aug 05) at 11PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 6s period and expected on Wednesday (Aug 05) at 8PM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 5PM (Sun 2nd Aug)3.5ft (1.1m) 12s
Best Surf 8PM (Wed 5th Aug)10ft (3.0m) 15s
Most Powerful11PM (Wed 5th Aug)10ft (3.0m) 14s

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


The Lowdown

Alright folks, Rusty here. Let’s break down what’s coming our way for Onrus over the next couple of weeks.

Right off the bat, we’ve got a bit of a slow start. The first real surf worth paddling out for doesn’t kick off until Sunday, August 2nd. The water’s sitting at 60°F, which is pretty much bang on average for this time of year – nothing unusual there.

Sunday morning, August 2nd, we’re looking at clean 4 ft SW groundswell with a 13-second period. The wind is light and cross-off from the NNE at just 3 mph, so the surface should be tidy. The combined energy is moderate at 479, enough to get you moving. That afternoon, it goes glassy—zero wind from the SSE—and the swell drops slightly to 4 ft but the energy bumps up to 508. It’s a sweet, mellow session for a Sunday.

Monday, August 3rd, is a beauty. Morning glass-off from the east, 5 ft SW swell at 13 seconds, and the energy is rising to 747. The waves will have some push and shape. This is the pick of the early week. The afternoon turns a bit onshore from the SE, so morning is definitely the call.

Tuesday, August 4th, stays clean but smaller. Morning 5 ft SW swell with 11-second period and cross-off wind from the WSW at 6 mph. Energy is moderate at 451. It’s solid, fun surf, but nothing to write home about.

Now, here’s where things get interesting. Wednesday, August 5th, we’ve got a standout. Morning delivers 6 ft SW swell with a super-long 16-second period – that’s pure groundswell energy. The wind is offshore from the NW at 16 mph, and the combined energy jumps to 1698. The waves are going to be powerful, well-shaped, and clean. This is for experienced surfers, especially with that long period – it’ll be breaking best at the reef, with long gaps between sets. The afternoon gets even bigger: 8 ft WSW swell, still offshore at 19 mph, and the energy absolutely rockets to 6335. That’s a serious amount of juice. But the guidance says it’s marginal here due to tide, so pick your moment carefully. This is the best window of the whole outlook.

Thursday, August 6th, through Saturday, August 8th, the swell stays big – 10 ft to 12 ft SW. The wind is mostly cross-off or onshore, but honestly, this is too much for Onrus. The forecast suggests it’s simply too big for this break. Only experts should even consider it, and even then, it’s more of a spectacle than a session. The combined energy is huge, sitting between 2795 and 3550, but the quality is compromised.

Sunday, August 9th, to Monday, August 10th, things get messy. Strong winds, rain, and dropping swell. The energy drops to 564 by Monday morning, with a short 10-second period and cross-onshore wind. Not worth paddling out.

We then hit a real rough patch. Tuesday, August 11th, and Wednesday, August 12th, see massive 13 ft to 15 ft swells with onshore wind and poor conditions. The energy is at 4688 to 6777, but it’s a washing machine. Kite surfers might be frothing, but for paddle surfers, it’s a no-go.

Thursday, August 13th, starts to ease back. 5 ft SSE swell with a 12-second period, but the wind is cross-on and the energy is 911. It’s marginal.

Then, after that rough stretch, we get a silver lining. Friday, August 14th, and Saturday, August 15th, look promising. Friday morning is glassy, with a 4 ft SW swell and a 16-second period. The energy is 1134. The afternoon stays clean with cross-off wind. This is a true groundswell – long period, good shape, and clean. Saturday morning is even better: glassy, 6 ft SW swell at 15 seconds, and energy at 1504. This is a great session for experienced surfers who can handle the longer gaps between sets.

The final few days, Sunday, August 16th, and Monday, August 17th, fade out with onshore wind and lumpy conditions. Not worth it.

So, to sum it up: the clear standout is Wednesday, August 5th, morning and afternoon. That’s the one to circle. The bonus window is Friday, August 14th, and Saturday, August 15th, mornings. The rest is either too small, too big, or too windy.

Stay frothing,
Rusty

Short Range Forecast

Mostly dry. Warm (max 22°C on Mon afternoon, min 15°C on Tue night). Wind will be generally light.

Days 4-6 Weather Summary

Moderate rain (total 12mm), heaviest on Wed night. Very mild (max 18°C on Wed morning, min 10°C on Thu night). Winds decreasing (fresh winds from the WNW on Wed afternoon, calm by Thu afternoon).

Sunday
2
Monday
3
Tuesday
4
Wednesday
5
Thursday
6
Friday
7
Saturday
8
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
3
2
3
2
2
2
2
2
4
6
!
!
4
!
!
3
4
!
!
!
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.2
SW
13
1.1
SW
12
1.3
SW
13
1.4
SW
13
1.1
WSW
13
1.4
SW
12
1.4
SW
11
1.1
SW
11
0.8
SW
14
1.8
SW
16
2.5
SW
15
3
SW
14
3
SW
13
2.5
SW
13
3
SW
14
3
SW
14
2.5
SW
14
2.4
SW
13
3
SW
13
3.5
SW
13
3
SW
12
Wave Graph
Metric surfscale
Energy kJ
473
386
609
639
402
568
439
292
251
1654
3200
3819
2795
2456
3261
2925
2316
2005
2679
3550
2227
Wind (km/h)
5
NNE
0
SSE
10
ENE
0
ENE
5
SSE
10
NE
10
WSW
5
WSW
5
NNW
20
NW
30
NW
15
WNW
10
SW
5
SE
15
E
20
ENE
5
SE
5
WNW
20
W
30
WNW
35
WNW
Wind State
cross-off
glassy
cross
glassy
on
cross
cross-off
cross-off
off
off
off
cross-off
cross
on
cross-on
cross-on
on
glassy
cross-off
cross-off
off
High Tide
5:34PM1.57m
5:47AM1.39m
6:08PM1.53m
6:26AM1.32m
6:48PM1.46m
7:13AM1.23m
7:37PM1.37m
8:16AM1.13m
8:47PM1.27m
9:48AM1.08m
10:22PM1.23m
11:33AM1.12m
11:57PM1.28m
Low Tide
11:17AM0.16m
11:47PM0.23m
11:49AM0.22m
00:25AM0.27m
12:25PM0.30m
1:09AM0.33m
1:10PM0.39m
2:06AM0.41m
2:11PM0.50m
3:28AM0.47m
3:45PM0.57m
5:11AM0.46m
5:37PM0.54m
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
rain showers
light rain
part cloud
clear
clear
cloud
clear
clear
clear
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:35
7:35
7:33
7:33
7:31
7:31
7:30
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:02
6:02
6:04
6:05
6:06
6:06
6:07
 mm
8
4
3
Temp °C
21
21
17
20
22
19
19
18
17
18
18
15
14
14
13
13
16
15
14
16
14
Feels °C
18
18
16
19
20
17
17
16
17
13
11
11
12
13
10
10
14
14
11
10
8
  • 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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