
Surf Forecasts:
Onrus surf forecast from 11 Jul 2026:
- Best quality surf: Wednesday 15 Jul, 8PM (local time) - 10ft (3.0m), 15s period, SW swell with glassy winds.
- Most powerful swell: Wednesday 15 Jul, 11PM (local time) - 10ft (3.0m), 14s period, SW swell with 3,619 kJ wave energy.
- Next surfable swell (1★+): Monday 13 Jul, 5PM (local time) - 3.5ft (1.0m), 10s period with S 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 5PM. The primary swell is predicted to be 1.0m and 10s period with a secondary swell of 0.4m 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-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 7s period and expected on Saturday (Jul 18) at 5PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Mon 13th Jul) | 3.5ft (1.0m) 10s |
| Best Surf | 8PM (Wed 15th Jul) | 10ft (3.0m) 15s |
| Most Powerful | 11PM (Wed 15th Jul) | 10ft (3.0m) 14s |
Table - best surf conditions forecast for Onrus over the next 16 days.
Alright, Rusty here. Let's have a look at what's in store for us at Onrus.
The next week and a bit is a real mixed bag, with a lot of wind and chop messing things up. But after a few days of patience, there's a proper window of clean, powerful groundswell that's worth holding out for. The reef setup here is exposed, and we're looking at a SW swell direction as the ideal.
Right now, it's a bit of a write-off. Sunday the 12th is a no-go with a solid 4.3ft to 4.9ft S swell but battered by a 12 mph cross-onshore wind, making it a choppy mess. The combined energy is moderate (530). Monday the 13th starts the same, but Monday afternoon things calm down. The wind drops to glassy, and we get a clean 3.3ft S swell at 10 seconds. It's small and the combined energy is weak (240), but it's the first sign of life. Tuesday the 14th is gutless, with only 2.3ft on offer.
Wednesday the 15th is where it starts to get interesting. We get a glassy, offshore morning with a 3.0ft SW groundswell. The period is a very long 17 seconds, which is a proper groundswell. The energy is moderate (689). This is a clean, fun-sized wave for the experienced surfer. The afternoon sees the swell jump to 7.5ft, but it gets a bit messy with a cross-shore wind.
Thursday the 16th is a standout. The morning is excellent for experienced surfers. A clean 8.2ft SW swell at 13 seconds, with a gentle offshore wind. The combined energy is strong (2310). This is the real deal. The afternoon drops a bit to 6.9ft but stays clean. This is the best session of the first week.
From Friday the 17th through to Tuesday the 22nd, the wind swings back onshore, and the swell gets messy. The conditions are poor and choppy, with a lot of cross-on wind. It's a frustrating run of days.
But then, Thursday the 23rd of July is another, even bigger, standout. The afternoon is glassy, with an 8.2ft SW swell at 14 seconds. The combined energy is a massive 2462. This is excellent for experienced surfers only. The morning of the 23rd sees a 9.8ft swell, which is too big for this break. Friday the 24th is also a big one, with an 8.2ft to 9.8ft SW swell and a clean offshore wind. The energy is very strong (3105). Again, this is expert territory. The weekend of the 25th and 26th continues with big, powerful swell, but the wind gets strong and the conditions become difficult to paddle into.
Monday the 27th is a step down in size to a 5.2ft SW swell, but the wind is light and cross-shore, making the conditions acceptable.
The water temperature is about average for this time of year.
So, to sum it up: the best windows are Wednesday the 15th for a fun, clean groundswell, and then a massive, powerful swell from Thursday the 23rd through Friday the 24th that is purely for the experienced crew. Go get it.
Short Range ForecastMostly dry. Very mild (max 18°C on Sun afternoon, min 11°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 18°C on Thu afternoon, min 13°C on Fri afternoon). Wind will be generally light. | ||||||||||||||||||||
Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Sat 18 | |||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | SSW 11 | SSW 11 | S 11 | S 10 | S 10 | S 10 | W 12 | W 11 | W 10 | SW 18 | SW 17 | SW 16 | SW 14 | SW 13 | SW 13 | SW 12 | SW 11 | SSW 11 | S 13 | SW 14 | SW 13 |
Wave Graph | |||||||||||||||||||||
800 | 394 | 496 | 296 | 196 | 184 | 137 | 112 | 96 | 108 | 482 | 2586 | 3569 | 2310 | 1521 | 1775 | 1585 | 1656 | 826 | 1336 | 852 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | glassy | cross-off | cross-off | cross-off | off | off | cross | cross | off | cross-off | cross | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 1:06AM1.46m | 1:50PM1.39m | 2:04AM1.54m | 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 | |||||||
Low Tide | 7:37AM0.19m | 7:55PM0.28m | 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 | ||||||||
— | 7:48 | — | — | 7:48 | — | — | 7:48 | — | — | 7:47 | — | — | 7:47 | — | — | 7:46 | — | — | 7:46 | — | |
5:47 | — | 5:49 | — | — | 5:49 | — | — | 5:50 | — | — | 5:51 | — | — | 5:51 | — | — | 5:52 | — | — | 5:52 | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 14 | 18 | 14 | 16 | 18 | 16 | 16 | 17 | 14 | 16 | 17 | 15 | 16 | 18 | 16 | 14 | 14 | 12 | 13 | 16 |
Feels °C | 10 | 10 | 14 | 11 | 14 | 17 | 15 | 14 | 14 | 11 | 15 | 15 | 15 | 14 | 15 | 14 | 11 | 10 | 7 | 8 | 12 |
Swell 1 Height (m) Direction Period (s) | SSW 11 | SSW 11 | S 11 | S 10 | S 10 | S 10 | W 12 | W 11 | W 10 | W 9 | SW 17 | SW 16 | SW 14 | SW 13 | SW 13 | SW 12 | SW 11 | SSW 11 | SW 11 | SW 14 | SSE 12 |
800 | 394 | 496 | 296 | 196 | 184 | 137 | 112 | 96 | 85 | 482 | 2586 | 3569 | 2310 | 1521 | 1775 | 1585 | 1656 | 696 | 1336 | 671 | |
Swell 2 Height (m) Direction Period (s) | W 12 | SSE 7 | W 11 | W 10 | W 10 | W 9 | SSE 9 | S 9 | S 9 | SW 18 | WSW 9 | SW 9 | ESE 9 | ESE 10 | ESE 9 | E 10 | E 10 | SW 19 | S 13 | S 10 | SW 13 |
68 | 68 | 57 | 32 | 30 | 27 | 64 | 41 | 39 | 108 | 132 | 110 | 29 | 18 | 9 | 8 | 8 | 15 | 826 | 424 | 852 | |
Swell 3 Height (m) Direction Period (s) | SW 18 | W 11 | SW 16 | SW 15 | SW 14 | SW 14 | SSW 10 | SSW 9 | SW 12 | SSE 8 | SW 11 | W 9 | — | — | — | — | — | — | SW 16 | S 13 | — |
12 | 58 | 38 | 33 | 31 | 29 | 61 | 32 | 52 | 23 | 75 | 81 | — | — | — | — | — | — | 366 | 176 | — | |
Wind waves Height (m) Direction Period (s) | E 4 | E 4 | SE 7 | ENE 3 | — | — | — | WNW 3 | W 3 | W 3 | — | — | — | WNW 4 | W 4 | — | — | E 10 | E 4 | E 4 | ESE 7 |
18 | 10 | 216 | 1 | — | — | — | 1 | 5 | 3 | — | — | — | 11 | 29 | — | — | 2 | 24 | 13 | 214 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 23 | 23 | 4 | 4 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 34 | 10 | 0 | 17 | 32 | 38 | 23 | 23 | 40 | 23 |
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.











