Onrus Surf Break

Lat Long: 34.41° S 19.17° E

Onrus Surf Forecast and Surf Report

Issued: 1 am 17 Jul 2026 (local time)

Forecast update in  hr  min

Today's Onrus sea temperature is
14.8° C
0.7° 

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


Onrus surf forecast from 17 Jul 2026:

  • Best quality surf: Wednesday 22 Jul, 5PM (local time) - 10ft (3.0m), 13s period, WSW swell with offshore winds.
  • Most powerful swell: Thursday 23 Jul, 5PM (local time) - 13ft (4.0m), 18s period, SW swell with 10,580 kJ wave energy.
  • Next surfable swell (1★+): Friday 17 Jul, 8AM (local time) - 6ft (1.9m), 11s 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 Friday (Jul 17) at 8AM. The primary swell is predicted to be 1.9m and 11s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Onrus in the next 16 days are 4.0m 18s and forecast to arrive on Thursday (Jul 23) at 5PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 5s period and expected on Wednesday (Jul 22) at 5AM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Fri 17th Jul)6ft (1.9m) 11s
Best Surf 5PM (Wed 22nd Jul)10ft (3.0m) 13s
Most Powerful 5PM (Thu 23rd Jul)13ft (4.0m) 18s

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


The Lowdown

G’day, Rusty here, and I’ve got a look at what’s coming up for Onrus. This is a reef setup, and it’s inconsistent, so when it fires, it’s a treat, but you’ve gotta be patient. We’ve got a cracking run of surf starting this Friday, the 17th of July, and it’s going to be a wild ride.

The water temp is sitting at 58.6°, which is about 1.3° cooler than normal for this time of year, so nothing too wild, just a bit of a chill in the water.

This Friday morning, the 17th, we’re kicking off with a solid 6.2ft SW swell with a period of 11 seconds. The wind is glassy from the NNW at 3 mph, so it’s clean as a whistle. The combined energy is moderate at 819, and it’s going to be a beauty. Friday afternoon holds at 5.6ft, still glassy, still SW. This is a standout for the early part of the forecast – clean, solid, and the reef will be handling it well.

Saturday the 18th is a bit smaller, with 4.6ft SW swell, but the wind is offshore from the WNW at 6 mph in the morning, turning cross-off in the afternoon. It’s clean, fun, and the energy is still moderate (589-726). Sunday the 19th sees a bump up to 5.6ft, with a longer period of 12 seconds from the WSW. The morning is offshore and clean, with moderate energy (968). This is another standout – long period groundswell, perfect for this reef. Just be aware, the afternoon gets a bit cross-shore and messy, so get in early.

Monday the 20th is a bit smaller again, 4.9ft SW, with 11-second period and cross-off winds. It’s clean and fun, but nothing special. Then Tuesday the 21st, we get a real treat. The morning is 5.2ft SW with a 14-second period, cross-off wind, and clean. The afternoon, though, is the pick of the whole run: 7.2ft SW, 14-second period, glassy conditions. The combined energy jumps to 1873, which is strong. This is excellent surf for experienced surfers – long, powerful lines on the reef. This is a true standout.

Wednesday the 22nd gets bigger. Morning is 8.2ft WSW with a 13-second period, offshore wind from the NW at 16 mph, and clean. The energy is 2230 – strong. This is getting into expert territory. The afternoon pushes 9.8ft, and the report says it’s too big for this break. Thursday the 23rd and Friday the 24th are similar – massive 9.8ft to 13.1ft SW swells, with periods up to 18 seconds, and glassy conditions. The energy is extreme (10580 on Thursday afternoon). This is for experienced surfers only, and even then, it might be a handful. The wind is good, but the size is gnarly.

After that, things get messy. Saturday the 25th has a 9.8ft SW swell, but the wind is howling from the ESE at 25-28 mph, cross-on and messy. The setup looks more interesting for kite surfing than paddle surfing. Sunday the 26th is still big (9.8ft), but the wind is cross, and the energy is still strong. It’s not great for surfing.

We then have a bit of a lull in the quality for a few days. Monday the 27th has a 7.9ft SW swell with a 15-second period, but the wind is cross-shore, making it messy. The afternoon glass offs with a 7.2ft, 14-second swell, and it’s back to excellent for experienced surfers. Tuesday the 28th is smaller, 5.2ft, glassy in the morning, but the afternoon has onshore wind, so it’s marginal.

Wednesday the 29th and Thursday the 30th are a mixed bag. Wednesday is small (3.6ft) and onshore, so forget it. Thursday the 30th is huge again – 13.1ft from the W with a 12-second period, glassy in the afternoon, but it’s too big for the break. Friday the 31st of July is even bigger, 14.8ft W, with a 13-second period, but again, too big for most.

Finally, on Saturday the 1st of August, we get a good one. The morning is 8.2ft SSW with a 12-second period, offshore wind from the NNW at 9 mph, and clean. The energy is strong at 3018. This is excellent for experienced surfers, and a solid way to end the forecast window. The afternoon is 7.9ft from the S, with a 12-second period, and offshore wind, but it’s a bit stronger.

So, your best bets are this Friday the 17th, Saturday the 18th, and Sunday the 19th for clean, fun surf. The absolute standout is Tuesday the 21st afternoon – that glassy, 7.2ft, 14-second swell on the reef will be magic. The second week is a bit of a roll of the dice, with a lot of big, powerful swells that are best left

Short Range Forecast

Mostly dry. Very mild (max 18°C on Sat afternoon, min 13°C on Sun night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Very mild (max 17°C on Tue afternoon, min 12°C on Mon night). Winds increasing (calm on Tue afternoon, fresh winds from the NW by Wed afternoon).

Friday
17
Saturday
18
Sunday
19
Monday
20
Tuesday
21
Wednesday
22
Thursday
23
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
3
2
3
3
3
3
2
3
3
2
2
3
4
4
4
!
4
!
!
!
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.9
SW
11
1.7
SW
10
1.4
SW
10
1.4
SW
9
1.4
SW
9
1.3
SW
12
1.7
WSW
12
1.8
SW
11
1.8
SW
9
1.5
SW
11
1.2
SW
10
0.6
SSW
16
1.6
SW
14
2.2
SW
14
2.5
SW
14
2.5
WSW
13
3
WSW
13
2.5
SW
12
3
SW
12
4
SW
18
3.5
SW
16
Wave Graph
Metric surfscale
Energy kJ
819
588
369
314
345
520
756
749
540
487
268
166
920
1837
2356
2230
2817
1681
2297
10580
6957
Wind (km/h)
5
NNW
5
W
10
NW
10
WNW
10
W
15
NW
20
WNW
15
SSW
5
ENE
10
W
10
WSW
10
N
10
N
5
SW
10
NNW
25
NW
25
WNW
10
NW
5
N
5
WSW
5
NE
Wind State
glassy
glassy
off
off
cross-off
off
off
cross
glassy
cross-off
cross-off
cross-off
cross-off
glassy
cross-off
off
off
off
cross-off
glassy
cross
High Tide
5:38PM1.64m
5:54AM1.43m
6:19PM1.56m
6:36AM1.32m
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
Low Tide
11:22AM0.08m
11:56PM0.18m
12:01PM0.17m
00:40AM0.26m
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
cloud
cloud
part cloud
part cloud
part cloud
clear
clear
part cloud
clear
clear
part cloud
clear
clear
clear
part cloud
clear
part cloud
part cloud
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:46
7:46
7:45
7:45
7:43
7:43
7:43
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:52
5:52
5:52
5:53
5:53
5:54
5:55
 mm
Temp °C
16
17
16
16
18
16
17
18
15
15
15
14
15
17
15
16
17
15
16
17
14
Feels °C
16
17
16
14
16
14
13
14
15
14
13
12
13
15
14
11
10
12
14
15
14
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 
submit an eyeball surf report

Quick surf report for Onrus:

join our community of surf reporters

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Onrus surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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.

Nearest locationNearest