Onrus Surf Break

Lat Long: 34.41° S 19.17° E

Onrus Surf Forecast and Surf Report

Issued: 1 am 19 Jul 2026 (local time)

Forecast update in  hr  min

Today's Onrus sea temperature is
15.5° 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 19 Jul 2026:

  • Best quality surf: Sunday 19 Jul, 5PM (local time) - 10ft (3.0m), 9s period, WSW swell with offshore winds.
  • Most powerful swell: Thursday 23 Jul, 11PM (local time) - 13ft (4.0m), 16s period, SW swell with 8,803 kJ wave energy.
  • Next surfable swell (1★+): Sunday 19 Jul, 8AM (local time) - 5.5ft (1.7m), 12s period with WSW 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 19) at 8AM. The primary swell is predicted to be 1.7m and 12s period with a secondary swell of 0.7m and 11s. 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 16s and forecast to arrive on Thursday (Jul 23) at 11PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 5s period and expected on Wednesday (Jul 22) at 11PM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Sun 19th Jul)5.5ft (1.7m) 12s
Best Surf 5PM (Sun 19th Jul)10ft (3.0m) 9s
Most Powerful11PM (Thu 23rd Jul)13ft (4.0m) 16s

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


The Lowdown

Alright, Rusty here, let’s take a look at what’s on the cards for Onrus over the next couple of weeks.

Right off the bat, we’ve got a solid run of surf coming in, but it’s not all smooth sailing. The first real action kicks off Sunday morning, the 19th of July. It’s a bit of a mixed bag to start, with a cloudy sky and a fresh 19 mph offshore wind from the NW. That wind is the saving grace because the swell is a meaty 6 ft from the WSW, with a period of 12 seconds, and the combined energy is a strong 1118. It’s a bit of a handful, but the offshore wind will keep it clean. The water temp is sitting at 60°, which is about average for this time of year – nothing to write home about.

By Sunday afternoon, the swell jumps up to 10 ft from the WSW, but frankly, that’s too big for Onrus. It’s a reef break that can get a bit out of control when it’s that size. The wind is still offshore but lighter at 16 mph. This one is for the experienced crew only, and even then, it’s a bit of a beast.

The standout of the whole forecast, and I mean the real gem, is Tuesday morning, the 21st of July. Seriously, mark it in your calendar. We’re looking at a 7 ft SW groundswell with a very long period of 14 seconds, and the combined energy is a whopping 1941. The wind is glassy out of the ENE at just 3 mph. It doesn’t get much better than that for a reef break like Onrus. The conditions are described as “excellent” for experienced surfers, and I’m with that. The long period means the sets will have real power and shape, and the glassy conditions will have it looking like a mirror. Just be aware that this is an inconsistent spot, so you’ll be waiting for the sets, but when they come, they’ll be worth it. Crowds are possible here, so get in early.

After that, the week keeps pumping. Thursday morning, the 23rd of July, is another top-tier call. You’ve got 7 ft of SW swell at 11 seconds, combined energy of 1220, and a light 6 mph cross-offshore wind from the W. It’s clean, it’s powerful, and it’s another one for the experienced surfer. The period is a bit shorter than Tuesday, but it’s still a solid groundswell.

Now, we hit a bit of a rough patch from the 25th of July through to the end of the month. The wind turns onshore or cross-onshore, and the swell stays big but messy. Saturday the 25th is a write-off with strong onshore winds, and the 27th and 28th are even worse with strong to fresh onshore winds and lumpy conditions. The swell is still there, but the quality is poor. It’s a good time to take a break or check inland.

We start to see a glimmer of hope again on Saturday morning, the 1st of August. The swell has dropped to a more manageable 5 ft from the SSE, period of 11 seconds, and the wind is a moderate 12 mph offshore from the NW. It’s a clean, moderate offshore breeze, and the energy is 1200. This is a solid option for an intermediate surfer. The water will still be cold, but it’s looking good.

The run continues into Sunday the 2nd of August with a smaller 4 ft SSE swell and a moderate offshore wind, and then Monday the 3rd of August finishes things off with a glassy morning and a 3 ft SW groundswell. It’s a small but clean end to the forecast.

So, to sum it up: Tuesday morning the 21st is the absolute pick of the bunch – glassy, powerful, long-period groundswell. Thursday morning the 23rd is a close second. The rest of the first week has some solid options, but the second week is a bit of a washout until the 1st of August rolls around. Keep an eye on that Tuesday session, boys. It’s going to be a cracker.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Sun afternoon. Very mild (max 16°C on Mon afternoon, min 11°C on Tue night). Winds decreasing (fresh winds from the W on Sun afternoon, calm by Mon night).

Days 4-6 Weather Summary

Mostly dry. Very mild (max 15°C on Wed afternoon, min 11°C on Wed morning). Wind will be generally light.

Sunday
19
Monday
20
Tuesday
21
Wednesday
22
Thursday
23
Friday
24
Saturday
25
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
!
4
3
1
2
4
2
3
3
2
2
4
!
!
!
!
!
3
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.9
WSW
12
3
WSW
9
2.3
SW
10
1.7
SW
9
1.1
SW
9
0.8
SSW
16
2.2
SW
14
2.5
SW
13
2.3
SW
13
2
SW
12
1.8
SW
12
1.7
SW
12
2.2
SW
11
3
SW
16
4
SW
16
3
SW
14
3
SW
14
3
SW
14
2.5
SW
13
2.5
SW
13
1.9
SW
12
Wave Graph
Metric surfscale
Energy kJ
983
1392
1061
488
164
310
1895
2172
1594
1150
929
781
1214
4301
7862
3999
3171
2887
2340
1982
1026
Wind (km/h)
25
NW
25
WNW
10
NNW
5
WNW
15
WSW
10
NW
5
ENE
10
S
10
NE
20
W
25
W
20
NNW
10
WSW
10
SE
5
NNE
5
N
5
SSE
10
E
15
E
20
ESE
20
ENE
Wind State
off
off
off
cross-off
cross-off
off
glassy
cross-on
cross
cross-off
cross-off
cross-off
cross-off
on
cross-off
glassy
cross-on
cross-on
cross-on
on
cross-on
High Tide
7:00PM1.46m
7:20AM1.21m
7:44PM1.34m
8:10AM1.10m
8:34PM1.23m
9:16AM1.02m
9:41PM1.14m
10:45AM1.00m
11:04PM1.11m
12:12PM1.04m
00:20AM1.14m
1:12PM1.12m
1:16AM1.21m
Low Tide
12:39PM0.28m
1:24AM0.36m
1:19PM0.41m
2:12AM0.46m
2:05PM0.53m
3:12AM0.54m
3:08PM0.63m
4:32AM0.59m
4:43PM0.67m
5:58AM0.57m
6:16PM0.65m
7:01AM0.50m
7:17PM0.57m
cloud
rain showers
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
clear
part cloud
cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:45
7:45
7:43
7:43
7:43
7:43
7:41
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:52
5:53
5:53
5:54
5:55
5:55
5:57
 mm
1
Temp °C
15
15
15
15
16
14
14
15
13
14
15
14
14
14
14
14
15
13
14
18
13
Feels °C
10
10
13
14
13
12
13
14
11
11
10
10
11
14
13
14
14
12
11
14
9
  • 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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