Onrus Surf Break

Lat Long: 34.41° S 19.17° E

Onrus Surf Forecast and Surf Report

Issued: 1 pm 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: Thursday 23 Jul, 11PM (local time) - 11ft (3.5m), 16s period, SW swell with cross-shore winds.
  • Most powerful swell: Friday 24 Jul, 2AM (local time) - 11ft (3.5m), 16s period, SW swell with 5,937 kJ wave energy.
  • Next surfable swell (1★+): Sunday 19 Jul, 8PM (local time) - 7.5ft (2.3m), 10s 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 19) at 8PM. The primary swell is predicted to be 2.3m and 10s period with a secondary swell of 0.5m 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 3.5m 16s and forecast to arrive on Friday (Jul 24) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 5s period and expected on Wednesday (Jul 22) at 8PM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Sun 19th Jul)7.5ft (2.3m) 10s
Best Surf11PM (Thu 23rd Jul)11ft (3.5m) 16s
Most Powerful 2AM (Fri 24th Jul)11ft (3.5m) 16s

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


The Lowdown

Alright, let’s talk about Onrus. It’s a reef break that’s inconsistent, so you’ve gotta pick your moments. The water temp is sitting around 60°F, which is bang on average for this time of year – no surprises there. Crowds can pop up sometimes, but when it’s good, it’s worth sharing.

The first few days are just warm-ups. Sunday afternoon the 19th has a 7.9ft WSW swell with a 10-second period, cross-off wind, but it’s marginal – nothing to get excited about. Monday the 20th cleans up a bit: morning brings 5.6ft SW at 10 seconds, cross-off, and the afternoon drops to 3.9ft but still clean. Decent for a slow session, but not the standout.

Then Tuesday morning the 21st – that’s the one. The swell hits 7.5ft from the SW, period stretching to 14 seconds, and the wind is glassy. That’s proper groundswell, long lines, and the reef will handle it beautifully. The combined energy is 2083 – solid, meaty. This is for experienced surfers only; it’s got some punch. Afternoon gets a bit cross-on and bigger at 8.2ft, less ideal.

Wednesday the 22nd is cross-off both sessions, 6.9ft SW with 12-second period, but the energy is a step down – still clean, but not as special. Thursday the 23rd morning has offshore NW wind and 6.2ft WSW, then afternoon sees 5.2ft WSW with cross-off and a score that’s excellent for experienced surfers – clean and lined up. Good, but not the top pick.

Friday the 24th morning is a 9.8ft SW swell with 14 seconds – too big for this break, and cross-on wind makes it a mess. Afternoon is still too big and choppy. Saturday the 25th is cross-on and messy, best left alone. Sunday the 26th afternoon finally gets a break: 5.9ft SW, 11 seconds, cross-off wind, and the energy is 1017 – clean and fun. Monday the 27th morning is glassy with 6.6ft SW at 12 seconds, energy 1261 – another excellent window for experienced surfers. But after that lunchtime, the wind swings onshore and it turns poor.

Then we hit a rough patch. From Tuesday the 28th through to Saturday the 1st of August, it’s strong cross-onshore winds – 19–28 mph – and lumpy, messy surf. The swell is still there, but it’s not rideable. No recommendations in that stretch.

Sunday the 2nd of August brings a change. Morning has 6.9ft SW at a very long 17 seconds, cross-shore wind, energy 2539 –

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 WNW on Sun afternoon, calm by Mon night).

Days 5-7 Weather Summary

Mostly dry. Very mild (max 18°C on Fri afternoon, min 12°C on Fri morning). Wind will be generally light.

Sun
19
Monday
20
Tuesday
21
Wednesday
22
Thursday
23
Friday
24
Saturday
25
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
4
3
3
3
4
3
3
3
2
2
3
4
!
!
1
2
2
1
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.4
WSW
10
2.2
SW
11
1.7
SW
10
1.2
SW
9
0.8
SSW
16
2.3
SW
14
2.5
SW
13
2.3
SW
12
2.1
SW
12
2.1
SW
12
1.7
SW
12
1.9
WSW
10
1.6
WSW
10
3.5
SW
16
3
SW
14
2.5
SW
14
2.3
SW
13
2.3
SW
13
2.1
SW
12
1.9
SW
12
Wave Graph
Metric surfscale
Energy kJ
1035
1086
535
215
314
2037
2172
1569
1209
1293
781
717
530
5937
3777
2703
1890
1724
1313
1013
Wind (km/h)
30
W
10
NNW
5
NNW
10
WSW
5
NW
5
NE
10
S
10
NE
15
WNW
25
W
15
NNW
10
NNW
15
W
10
E
20
E
20
ESE
15
ENE
15
E
20
ESE
20
ENE
Wind State
cross-off
off
cross-off
cross-off
off
glassy
cross-on
cross
cross-off
cross-off
cross-off
off
cross-off
cross-on
cross-on
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
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
rain showers
part cloud
part cloud
part cloud
clear
part cloud
clear
clear
clear
clear
part cloud
cloud
cloud
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
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
14
15
16
14
13
14
13
14
15
13
15
16
14
14
18
14
16
20
15
Feels °C
10
11
13
14
12
12
13
11
11
11
9
12
13
13
11
16
12
13
17
12
  • 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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