Surf Forecasts:
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) - 6ft (1.9m), 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 1.9m 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 1.8m 8s period and expected on Wednesday (Jul 29) at 2PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Wed 22nd Jul) | 6ft (1.9m) 12s |
| Best Surf | 11PM (Thu 23rd Jul) | 13ft (4.0m) 17s |
| Most Powerful | 11PM (Thu 23rd Jul) | 13ft (4.0m) 17s |
Table - best surf conditions forecast for Onrus over the next 16 days.
The Lowdown
Alright, Rusty here again, but in feet and miles.
We've got a solid run of surf lined up at Onrus, but it takes its time to get going. First real recommendation isn’t until Wednesday, July 22nd in the afternoon.
That Wednesday session is rough. Swell is 7ft from the SW, with moderate cross-offshore wind and high energy (1342). Looks like a messy power wash. Water temp is 60°, average for the season.
Thursday the 23rd morning is the first real nod. It’s 7ft SW at 11 seconds, clean offshore wind from the NW. Energy is still high (1284) and the call is for excellent conditions, but only for experienced surfers. That 7ft on a reef at Onrus packs a punch. Crowds can show up sometimes, but the wind quality is the winner.
Friday the 24th is a beast. Morning shows 10ft SW with a 15-second period, and energy is massive (4251). That’s real groundswell. But it’s too big for this break. Expert-only. Wind is light cross, so it’ll be clean, but you better have your skills dialed. Afternoon stays big at 10ft, 14 seconds, still clean but too much for most.
Saturday 25th drops slightly to 8ft SW, but wind goes cross-on and choppy. Energy stays high (2380), but it won’t be pretty. Same for Sunday the 26th with 6ft onshore wind – not good.
Then a long stretch of poor conditions. From Monday 27th through Friday 31st July, winds are strong and onshore, swell either too big or messy. Many days flagged as poor. This stretch is a wipeout for clean waves.
Saturday the 1st of August has a small glimmer – afternoon shows 6ft SW at 14 seconds, light cross-on, moderate energy (1445), but still only marginal.
Finally, Monday the 3rd of August delivers a true standout. Morning has 5ft SW, 11 seconds, light offshore from the NW. Then afternoon seals it: 5ft SW, glassy. That’s the best clean, manageable surf in the whole outlook. Energy is moderate (670 and 684), so it’s punchy but not overwhelming. Best for intermediate crew.
Tuesday the 4th is light cross-on again, nothing special. Wednesday the 5th starts looking chunky with 8ft, but poor winds.
And then the real bombs. Thursday the 5th afternoon and Friday the 6th: 20ft to 23ft SW groundswell with 16–18 second periods. Energy figures are insane (21095, 20354, 24632). That’s a major, massive swell. Winds are offshore and fresh – clean faces, but it’s huge. Only absolute experts should even think about it. Onrus will be a washing machine for anyone else.
Best on offer: Thursday 23rd morning for clean offshore barrels, and Monday 3rd August all day for glassy, manageable conditions. The big stuff on the 5th/6th is only for the elite crew.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Thu afternoon. Very mild (max 15°C on Wed afternoon, min 9°C on Fri morning). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 9mm), mostly falling on Mon night. Warm (max 20°C on Sat afternoon, min 13°C on Sun night). Winds increasing (light winds from the ENE on Sat night, strong winds from the ESE by Mon night). | |||||||||||||||||||
Wed 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | ||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | SW 12 | SW 12 | SW 11 | SW 12 | SW 16 | SW 15 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 | SW 11 | SW 12 | SW 13 | SW 12 | SSW 14 | SW 16 | SW 14 | SW 15 | SW 14 |
Wave Graph  | ||||||||||||||||||||
 kJ | 1223 | 843 | 1256 | 1632 | 7619 | 4251 | 3261 | 2158 | 1922 | 1525 | 1271 | 866 | 826 | 1331 | 819 | 4920 | 2620 | 2416 | 2612 | 2027 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | off | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross | on | on | cross-on | cross-on | on | cross-on | on | cross-on | on |
High Tide | 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 | |||||||
 |  |  |  | | | | | | | | | |  | | |  | | |  | |
 | — | — | 7:43 | — | — | 7:43 | — | — | 7:41 | — | — | 7:41 | — | — | 7:41 | — | — | 7:39 | — | — |
 | 5:54 | — | — | 5:55 | — | — | 5:55 | — | — | 5:57 | — | — | 5:58 | — | — | 5:58 | — | — | 5:59 | — |
mm | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — | 6 | 3 | 2 | 3 |
Temp °C | 15 | 13 | 14 | 13 | 13 | 12 | 15 | 13 | 14 | 20 | 17 | 19 | 18 | 14 | 16 | 16 | 16 | 14 | 14 | 15 |
Feels °C | 10 | 9 | 9 | 8 | 9 | 10 | 14 | 12 | 10 | 18 | 14 | 16 | 16 | 12 | 12 | 11 | 12 | 8 | 9 | 12 |
Swell 1 Height (m) Direction Period (s) | SW 12 | SW 12 | SW 11 | SW 12 | SW 16 | SW 15 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 | SW 11 | SW 12 | SW 13 | SW 12 | SW 18 | SW 16 | SW 14 | SW 15 | SW 14 |
| kJ | 1223 | 843 | 1256 | 1632 | 7619 | 4251 | 3261 | 2158 | 1922 | 1525 | 1271 | 866 | 826 | 1331 | 819 | 157 | 2620 | 2416 | 2612 | 2027 |
Swell 2 Height (m) Direction Period (s) | SSW 14 | S 12 | SE 13 | SW 20 | SE 12 | SE 12 | SE 12 | SE 11 | SSW 13 | SE 11 | SE 10 | SSW 15 | SW 14 | SSW 17 | SW 15 | SW 14 | WSW 12 | — | — | — |
| kJ | 111 | 187 | 7 | 634 | 37 | 35 | 34 | 19 | 454 | 18 | 16 | 283 | 301 | 188 | 589 | 821 | 14 | — | — | — |
Swell 3 Height (m) Direction Period (s) | SE 14 | SE 14 | SW 23 | SE 12 | — | — | — | — | SE 11 | — | — | ESE 10 | S 10 | S 9 | — | SSW 18 | — | — | — | — |
| kJ | 8 | 7 | 21 | 38 | — | — | — | — | 30 | — | — | 19 | 32 | 7 | — | 280 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WNW 5 | NNW 4 | NW 5 | — | — | — | — | — | E 3 | ESE 4 | ESE 4 | — | — | — | SSE 5 | SSW 14 | S 9 | SSE 9 | SE 8 | SE 8 |
| kJ | 105 | 12 | 62 | — | — | — | — | — | 4 | 17 | 8 | — | — | — | 32 | 4920 | 1138 | 716 | 439 | 277 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 72 | 10 | 0 | 32 | 30 | 10 | 25 | 10 | 10 | 10 | 10 | 4 | 23 | 10 | 23 | 221 | 89 | 220 | 38 | 10 |
Best forecast wave conditions in Overberg | ||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||
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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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