Onrus Surf Break

Lat Long: 34.41° S 19.17° E

Onrus Surf Forecast and Surf Report

Issued: 7 am 25 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 25 Jul 2026:

  • Best quality surf: Sunday 26 Jul, 11AM (local time) - 6.5ft (2.0m), 12s period, SW swell with glassy winds.
  • Most powerful swell: Monday 27 Jul, 5PM (local time) - 10ft (3.0m), 17s period, SSW swell with 5,516 kJ wave energy.
  • Next surfable swell (1★+): Sunday 26 Jul, 11AM (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 Sunday (Jul 26) at 11AM. The primary swell is predicted to be 2.0m and 12s period with a secondary swell of 0.9m and 15s. 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 17s and forecast to arrive on Monday (Jul 27) at 5PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.8m 6s period and expected on Tuesday (Jul 28) at 5PM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+)11AM (Sun 26th Jul)6.5ft (2.0m) 12s
Best Surf11AM (Sun 26th Jul)6.5ft (2.0m) 12s
Most Powerful 5PM (Mon 27th Jul)10ft (3.0m) 17s

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


The Lowdown

Alright folks, Rusty here with a look at the next couple of weeks for Onrus. We’ve got a bit of a mixed bag, but there are some real gems to look forward to. Let’s get into it.

We start off the run on Saturday, the 25th of July, but it’s a bit of a shaky start. Morning sees a solid 8ft SW swell, but it’s coming in with a cross-on breeze and the energy is sitting at 2378, which is strong. It’s a bit messy, to be honest. The afternoon doesn’t improve much, so it’s not the best time to paddle out.

But hold onto your board, because Sunday the 26th of July is where it gets interesting. The morning is looking absolutely magic. We’ve got a clean 7ft SW swell with glassy conditions. The wind is a whisper from the ENE at 6 mph, making for a slick surface. The energy is still strong at 1358, and this is excellent stuff for experienced surfers. The water temp is sitting pretty at 60°, which is about normal for this time of year. This is the standout session of the first week – get out there.

Monday the 27th is a write-off. The swell jumps up, but it’s getting hammered by strong onshore winds. The energy readings are through the roof at 4042 and 5516, but it’s just a washing machine out there. Best to give it a miss. Tuesday and Wednesday are also pretty rough, with strong winds and messy conditions.

We get a little reprieve on Wednesday afternoon, the 29th of July, with a clean 5ft SW swell and a light cross-offshore breeze. The energy is moderate at 809, and it’s looking clean. A decent option if you’re keen for a quick session.

The end of the first week and start of August see the swell dropping right off, with small, weak waves. The 1st of August afternoon has a glassy 2ft SW swell, which is tiny but fun on a longboard.

Now, here’s the real gold. Look ahead to Sunday the 2nd of August. The morning brings a 5ft SW groundswell with a very long period of 18 seconds. The wind is clean and cross-offshore, and the energy is strong at 1848. This is a classic, powerful groundswell that will wrap beautifully around the reef. The afternoon is even better, with a 7ft SW swell and the same clean conditions. This is the best on offer for the whole outlook.

Monday the 3rd of August keeps the good times rolling. Glassy conditions in the morning with a 8ft SW swell. The energy is strong at 2082. This is another top-tier session.

The 5th of August is another standout. The afternoon is absolutely firing: glassy conditions, an 8ft SW swell, and very strong energy at 3807. This is a perfect recipe for this reef. Just be aware that by the 6th of August, the swell gets too big – over 10ft – and it’s really only for the experts or chargers. The energy is extreme, but it’s probably too much for most.

The second week is a bit less certain, but there are still some fun waves. The 9th of August offers some clean, cross-offshore conditions with a 7ft WSW swell, though the energy is still strong.

This is a classic Onrus run. Take the standouts when they come, and don’t be afraid of the long-period groundswell – it’s what this reef is made for.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Mon morning. Very mild (max 19°C on Sun morning, min 13°C on Sat morning). Winds increasing (calm on Sun morning, fresh winds from the E by Mon night).

Days 4-6 Weather Summary

Mostly dry. Very mild (max 19°C on Thu afternoon, min 9°C on Tue night). Winds decreasing (strong winds from the E on Tue morning, calm by Wed afternoon).

Saturday
25
Sunday
26
Monday
27
Tuesday
28
Wednesday
29
Thursday
30
Friday
31
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
3
2
3
4
3
3
0
0
0
0
0
0
1
3
3
2
0
1
1
1
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.5
SW
13
2.5
SW
12
2.3
SW
12
2
SW
12
1.7
SW
12
2
SW
13
2.5
SW
17
3
SSW
17
3
SSW
15
2.4
SW
14
2.5
SSW
14
2
SW
13
1.7
SW
13
1.6
SW
13
1.4
SW
13
1.5
SW
13
1.5
SW
13
1.4
SW
13
1.2
SW
12
1.1
SW
12
1
SW
11
Wave Graph
Metric surfscale
Energy kJ
2000
1789
1539
1040
778
1259
3950
5516
3828
2416
2866
1408
981
809
659
734
757
690
423
361
246
Wind (km/h)
10
E
15
SE
15
ENE
5
ENE
5
SSW
10
S
25
SE
30
ESE
30
E
40
E
35
E
25
ENE
20
ENE
5
WSW
5
NNE
10
E
15
ESE
15
ENE
10
ENE
5
ESE
15
ENE
Wind State
cross-on
on
cross
glassy
cross
cross-on
on
on
cross-on
cross-on
cross-on
cross-on
cross
cross-off
glassy
cross-on
cross-on
cross
cross
on
cross-on
High Tide
1:12PM1.12m
1:16AM1.21m
1:55PM1.21m
1:58AM1.29m
2:31PM1.31m
2:34AM1.36m
3:04PM1.39m
3:07AM1.42m
3:34PM1.47m
3:39AM1.46m
4:04PM1.53m
4:10AM1.48m
4:34PM1.57m
4:41AM1.47m
Low Tide
7:17PM0.57m
7:46AM0.42m
8:01PM0.49m
8:23AM0.33m
8:37PM0.40m
8:55AM0.25m
9:10PM0.33m
9:24AM0.19m
9:42PM0.28m
9:52AM0.14m
10:12PM0.24m
10:20AM0.12m
10:43PM0.22m
clear
clear
clear
clear
clear
part cloud
light rain
cloud
part cloud
cloud
clear
clear
clear
clear
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:41
7:41
7:41
7:39
7:39
7:37
7:37
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:57
5:58
5:58
5:59
6:00
6:00
6:00
 mm
1
Temp °C
15
18
15
19
18
14
15
14
14
15
16
13
14
18
15
16
19
15
19
21
19
Feels °C
12
16
12
17
16
13
13
8
7
7
8
6
10
17
13
13
15
11
16
18
16
  • 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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