Surf Forecasts:
Onrus surf forecast from 13 Jul 2026:
- Best quality surf: Wednesday 15 Jul, 8PM (local time) - 10ft (3.0m), 14s period, SW swell with cross-shore winds.
- Most powerful swell: Wednesday 15 Jul, 11PM (local time) - 10ft (3.0m), 14s period, SW swell with 3,569 kJ wave energy.
- Next surfable swell (1★+): Monday 13 Jul, 11AM (local time) - 3ft (0.9m), 10s period with SSW 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 Monday (Jul 13) at 11AM. The primary swell is predicted to be 0.9m and 10s period with a secondary swell of 0.6m and 9s. 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 14s and forecast to arrive on Wednesday (Jul 15) 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 0.9m 6s period and expected on Saturday (Jul 18) at 5AM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Mon 13th Jul) | 3ft (0.9m) 10s |
| Best Surf | 8PM (Wed 15th Jul) | 10ft (3.0m) 14s |
| Most Powerful | 11PM (Wed 15th Jul) | 10ft (3.0m) 14s |
Table - best surf conditions forecast for Onrus over the next 16 days.
G’day, Rusty here in imperial.
Alright, let’s talk about Onrus. This is a reef break that’s inconsistent, so when it turns on, you’ve got to pay attention. The water’s sitting at 59°, which is pretty normal for this time of year – nothing wild there.
The first few days are a bit of a slow start. Monday morning (13 July) is glassy with a 3ft southerly swell, 10 second period, and the combined energy is moderate (259). It’s rideable, but nothing to write home about. Monday afternoon stays glassy, same size.
Tuesday (14 July) drops off to 2ft, westerly swell, cross-off wind – honestly, it’s pretty ordinary. Wednesday morning (15 July) is where things get interesting. We’ve got a 4ft SW groundswell cranking at 17 seconds, offshore NW wind, and the combined energy is pumping at 1256. That’s a strong, clean swell for the experienced crew. The afternoon builds to 8ft SW with a 15-second period, but it’s a bit cross-shore, so you’ll have to pick your tide.
Thursday (16 July) keeps the momentum: 8ft SW, 13 seconds, offshore NW wind, and 2140 energy in the morning. Afternoon drops to 7ft but still solid. Friday (17 July) gets messy with onshore SE wind – skip it.
Saturday (18 July) is a bit of a breather with 4ft S swell, light cross-shore, but Sunday (19 July) morning brings back some hope: 6ft WSW, 11 seconds, cross-off wind, and 878 energy – clean and fun.
Now, the real standout is Wednesday (15 July) morning. That 4ft SW groundswell at 17 seconds with glassy offshore NW wind is the best on offer. It’s a long-period groundswell, so it’ll wrap nicely into the reef, but watch out – it’s not for beginners.
There’s a gap from Thursday afternoon through to Monday (20 July) where things drop off, but then Tuesday (21 July) morning fires up again with 8ft SW, 15 seconds, offshore NNW wind, and massive 2936 energy. That’s another strong one for the experienced.
Wednesday (22 July) and Thursday (23 July) get too big for a reef break – 12ft to 13ft SW swells, with the forecast saying it’s too big for this spot. Only for the bravest if you’re game.
The last true standout is Monday (27 July) morning: 6ft SW, 12 seconds, glassy NNE wind, and 1026 energy. That’s clean, glassy, and excellent for experienced surfers.
Crowds can show up at Onrus sometimes, so keep an eye out. Overall, the best window is Wednesday (15 July) morning – don’t sleep on it.
Rusty.
Short Range ForecastMostly dry. Very mild (max 17°C on Mon afternoon, min 13°C on Mon morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 19°C on Sat afternoon, min 13°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | |||||||||||||||
AM | 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) | SSW 10 | S 10 | W 12 | W 11 | W 10 | SW 18 | SW 17 | SW 15 | SW 14 | SW 13 | SW 13 | SW 12 | SW 11 | SW 11 | S 13 | S 12 | S 12 | WSW 13 | WSW 12 | WSW 11 | WSW 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 154 | 184 | 137 | 112 | 96 | 108 | 831 | 2255 | 3341 | 2108 | 1387 | 1169 | 981 | 813 | 734 | 635 | 520 | 1487 | 1125 | 860 | 504 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | off | cross-off | cross-off | off | off | glassy | cross | cross-off | cross-off | off | cross-on | cross-on | cross-on | cross-off | cross-off | cross-off | glassy | cross-on | on |
High Tide | 2:42PM1.51m | 2:56AM1.59m | 3:29PM1.60m | 3:44AM1.61m | 4:14PM1.66m | 4:29AM1.59m | 4:57PM1.67m | 5:12AM1.52m | 5:38PM1.64m | 5:54AM1.43m | 6:19PM1.56m | 6:36AM1.32m | 7:00PM1.46m | ||||||||
Low Tide | 8:30AM0.10m | 8:50PM0.19m | 9:17AM0.04m | 9:40PM0.12m | 10:01AM0.01m | 10:27PM0.10m | 10:42AM0.02m | 11:12PM0.12m | 11:22AM0.08m | 11:56PM0.18m | 12:01PM0.17m | 00:40AM0.26m | 12:39PM0.28m | 1:24AM0.36m | |||||||
 | |  | | |  | | | |  | | |  | | | | | | | | | |
 | 7:48 | — | — | 7:48 | — | — | 7:47 | — | — | 7:47 | — | — | 7:46 | — | — | 7:46 | — | — | 7:45 | — | — |
 | — | 5:49 | — | — | 5:50 | — | — | 5:51 | — | — | 5:51 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 17 | 15 | 15 | 17 | 15 | 16 | 17 | 15 | 16 | 17 | 15 | 15 | 16 | 14 | 18 | 19 | 15 | 15 | 16 | 13 |
Feels °C | 15 | 15 | 14 | 12 | 14 | 12 | 15 | 16 | 14 | 15 | 15 | 13 | 16 | 13 | 10 | 17 | 17 | 13 | 15 | 16 | 12 |
Swell 1 Height (m) Direction Period (s) | SSW 10 | S 10 | W 12 | W 11 | W 10 | W 9 | SW 17 | SW 15 | SW 14 | SW 13 | SW 13 | SW 12 | SW 11 | SW 11 | S 13 | S 12 | S 12 | WSW 13 | WSW 12 | WSW 11 | WSW 10 |
| kJ | 154 | 184 | 137 | 112 | 96 | 85 | 831 | 2255 | 3341 | 2108 | 1387 | 1169 | 981 | 813 | 734 | 635 | 520 | 1487 | 1125 | 860 | 504 |
Swell 2 Height (m) Direction Period (s) | SSE 9 | W 9 | S 9 | SSE 9 | S 9 | WSW 4 | SW 11 | SW 10 | ESE 9 | ESE 10 | E 10 | E 10 | E 11 | SSW 14 | SW 10 | WSW 9 | WSW 9 | S 12 | SSE 11 | SSE 10 | SSW 13 |
| kJ | 61 | 27 | 60 | 47 | 40 | 6 | 286 | 296 | 17 | 18 | 8 | 8 | 9 | 70 | 225 | 118 | 115 | 324 | 150 | 77 | 111 |
Swell 3 Height (m) Direction Period (s) | W 10 | SW 14 | SSW 10 | SSW 9 | SW 12 | SW 18 | W 9 | W 9 | — | — | — | — | — | E 11 | SW 16 | SW 9 | WSW 16 | ESE 7 | — | SSE 10 | SSE 10 |
| kJ | 30 | 30 | 61 | 32 | 37 | 108 | 57 | 41 | — | — | — | — | — | 9 | 10 | 53 | 237 | 18 | — | 33 | 31 |
Wind waves Height (m) Direction Period (s) | — | — | — | WNW 3 | W 4 | NW 3 | — | — | — | — | — | — | — | — | ENE 2 | — | W 3 | — | — | — | ESE 3 |
| kJ | — | — | — | 2 | 9 | 1 | — | — | — | — | — | — | — | — | 1 | — | 3 | — | — | — | 8 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 8 | 0 | 0 | 31 | 10 | 0 | 0 | 0 | 23 | 4 | 23 | 4 | 0 | 0 | 0 | 4 | 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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