Onrus Surf Break

Lat Long: 34.41° S 19.17° E

Onrus Surf Forecast and Surf Report

Issued: 7 am 22 Jul 2026 (local time)

Forecast update in  hr  min

Today's Onrus sea temperature is
15.6° C
0.0° 

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


Onrus surf forecast from 22 Jul 2026:

  • Best quality surf: Thursday 23 Jul, 11PM (local time) - 13ft (4.0m), 17s period, SW swell with cross-onshore winds.
  • Most powerful swell: Thursday 23 Jul, 11PM (local time) - 13ft (4.0m), 17s period, SW swell with 8,364 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 22 Jul, 8PM (local time) - 6.5ft (2.0m), 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 Wednesday (Jul 22) at 8PM. The primary swell is predicted to be 2.0m and 12s period with a secondary swell of 0.5m and 14s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Onrus in the next 16 days are 4.0m 17s and forecast to arrive on Thursday (Jul 23) at 11PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.2m 8s period and expected on Wednesday (Jul 29) at 5AM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Wed 22nd Jul)6.5ft (2.0m) 12s
Best Surf11PM (Thu 23rd Jul)13ft (4.0m) 17s
Most Powerful11PM (Thu 23rd Jul)13ft (4.0m) 17s

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


The Lowdown

Alright, Rusty here, checkin' in from the coast. Let's see what Old Man Winter is cookin' up for us.

We've got a solid 16-day window, but it's a bit of a bumpy ride. The early part of the week is all about some serious, powerful swell, but it's a bit of a tricky one to get right. The standout is clearly Onrus, and it's got a few moments that'll have the experienced crew grinning.

The action kicks off on Wednesday, July 22nd, with a solid 7ft SW groundswell churning in. The energy is strong (1202), and with a light NW wind making it clean, the morning session is calling. This is a reef break, so it's one for the intermediate and above crew. The water's sitting at 60°, which is pretty much normal for this time of year, so no surprises there.

Thursday morning, July 23rd, looks even better. The swell is a touch bigger at 7ft, still from the SW, and the wind has swung clean offshore from the NW. The energy is pumping (1284), and the waves will be holding up nicely. That's a top pick if you can get out there.

Now, Friday, July 24th, is where things get a bit wild. We're looking at a massive 10ft SW groundswell with a very long 15-second period. The energy is huge (4054), but at this size, Onrus is strictly for experts only. The wind is a bit cross-on, which is a shame, but the sheer power of the swell will be something to see. This is a "look but don't touch" session for most of us.

The next standout window is a bit further out, on Sunday, July 26th. The swell has dropped back to a more manageable 6ft from the SW, but the real magic is the wind. It's glassy. Absolutely dead flat. The energy is still solid (1120), and the waves will be as clean as a whistle. That morning session is prime real estate.

We then hit a rough patch. From Monday, July 27th through to the end of the month, the wind goes onshore and the swell gets messy. It's a write-off for a few days there.

The light at the end of the tunnel is Friday, July 31st. The swell drops right down to 4ft, the wind goes glassy, and the energy is low (517). It's not going to be huge, but it'll be clean and fun. That's a good "get the rust off" session.

The following week, around Wednesday, August 4th, another big pulse is forecast. A 13ft WNW swell is predicted, but again, it's too big for Onrus and the wind is a bit suspect. That one's a long-range promise, so keep an eye on it, but don't book the day off work just yet.

For the best on offer, I'd put Thursday morning, July 23rd, and Sunday morning, July 26th, as the standouts. The Thursday has the bigger, more powerful swell with offshore wind, and the Sunday has that perfect, glassy morning for a clean, hard-charging session. Both are expert-level days, but that's the reef life for you.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Thu afternoon. Very mild (max 16°C on Fri afternoon, min 10°C on Fri morning). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 4mm), mostly falling on Mon night. Warm (max 21°C on Sat afternoon, min 11°C on Sat morning). Winds increasing (light winds from the S on Sun morning, strong winds from the ESE by Mon night).

Wednesday
22
Thursday
23
Friday
24
Saturday
25
Sunday
26
Monday
27
Tuesday
28
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
4
2
3
4
2
!
!
!
2
2
3
3
4
1
1
0
0
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)
2
SW
12
1.8
SW
12
1.8
WSW
12
2.2
SW
11
2.3
SW
12
4
SW
16
3
SW
15
3
SW
14
2.4
SW
13
2.3
SW
13
2.2
SW
12
2
SW
12
1.8
SW
11
1.7
SW
11
2.1
SW
13
2
SW
12
2.4
SW
14
2.2
SW
15
3.5
SSW
15
3.5
SSW
15
2.4
SW
14
Wave Graph
Metric surfscale
Energy kJ
1125
884
874
1256
1539
7317
4054
3419
2035
1806
1404
1088
798
713
1446
1111
2391
2055
5380
4918
2383
Wind (km/h)
15
WNW
25
W
20
NNW
20
NW
15
S
15
ENE
10
ENE
5
S
15
ENE
15
ENE
10
E
10
NE
5
S
20
SSE
20
E
30
ESE
30
ESE
35
ESE
35
ESE
35
ESE
30
E
Wind State
cross-off
cross-off
cross-off
off
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
glassy
on
cross-on
cross-on
on
cross-on
cross-on
cross-on
cross-on
High Tide
9:16AM1.02m
9:41PM1.14m
10:45AM1.00m
11:04PM1.11m
12:12PM1.04m
00:20AM1.14m
1:12PM1.12m
1:16AM1.21m
1:55PM1.21m
1:58AM1.29m
2:31PM1.31m
2:34AM1.36m
3:04PM1.39m
3:07AM1.42m
Low Tide
3:08PM0.63m
4:32AM0.59m
4:43PM0.67m
5:58AM0.57m
6:16PM0.65m
7:01AM0.50m
7:17PM0.57m
7:46AM0.42m
8:01PM0.49m
8:23AM0.33m
8:37PM0.40m
8:55AM0.25m
9:10PM0.33m
clear
clear
clear
cloud
rain showers
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
cloud
part cloud
light rain
light rain
light rain
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:43
7:43
7:43
7:41
7:41
7:41
7:39
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:54
5:55
5:55
5:57
5:58
5:58
5:59
 mm
1
4
3
2
Temp °C
13
15
13
14
14
13
13
16
13
15
21
19
20
17
15
16
17
16
14
14
16
Feels °C
10
10
9
10
9
10
11
15
12
12
19
17
18
15
12
12
13
10
7
8
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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