Surf Forecasts:
Onrus surf forecast from 7 Aug 2026:
- Best quality surf: Friday 7 Aug, 8AM (local time) - 10ft (3.0m), 14s period, SW swell with cross-onshore winds.
- Most powerful swell: Saturday 8 Aug, 5PM (local time) - 11ft (3.5m), 14s period, SW swell with 4,435 kJ wave energy.
- Next surfable swell (1★+): Friday 7 Aug, 8AM (local time) - 10ft (3.0m), 14s 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 (Aug 07) at 8AM. The primary swell is predicted to be 3.0m and 14s period with a secondary swell of 0.7m and 3s. The wind is predicted to be cross-onshore as the swell arrives.
The most powerful waves expected at Onrus in the next 16 days are 3.5m 14s and forecast to arrive on Saturday (Aug 08) at 5PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.1m 7s period and expected on Tuesday (Aug 11) at 5PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Fri 7th Aug) | 10ft (3.0m) 14s |
| Best Surf | 8AM (Fri 7th Aug) | 10ft (3.0m) 14s |
| Most Powerful | 5PM (Sat 8th Aug) | 11ft (3.5m) 14s |
Table - best surf conditions forecast for Onrus over the next 16 days.
The Lowdown
Alright, Rusty here. Let's chew over what's coming for Onrus.
Water temp is about average for this time of year, nothing to write home about.
We've got a bit of a dry spell first. Friday the 7th is a no-go for paddling. There's a big 10ft SW groundswell with 3428 (moderate energy) rolling in, plus messy wind. Too big for this reef. The afternoon cleans up with a cross-offshore breeze, but it's still giant size.
Saturday the 8th morning is our first real look. We've got 8ft of SW swell with a 13-second period, and solid offshore wind. That's quality for the experienced crew. The combined energy is 2126 (strong). Saturday afternoon goes to a 12ft monster with cross-shore wind – tow-in territory only.
Sunday the 9th through Tuesday the 11th is all poor. Fresh onshore winds and lumpy conditions. Leave the board at home.
Wednesday the 12th is marginal. A 5.5ft, very long period SW groundswell (18 seconds!) comes in, but the wind is light and cross or cross-on. That long period will make it fat and walled up at Onrus.
Thursday the 13th is the pick of the whole outlook. Morning has a 7ft SW swell with a 16-second period and a light cross-offshore breeze. The afternoon turns to glass with the swell dropping to 6ft. The energy is 2452 (strong) in the morning. Clean, powerful, and perfect shape for the experienced surfer.
Friday the 14th morning is also very good with clean 5ft WSW swell, and Saturday the 15th morning is another beauty with 7ft WSW and light offshore wind. Sunday the 16th morning is a bit smaller at 5ft but still clean.
For the second week, Monday the 17th is a hidden gem. Dead glassy in the morning with a 7ft WSW swell, and glassy again in the afternoon at 7.5ft. Combined energy is 1556 and 1657 (strong). Excellent, clean power.
Tuesday the 18th onshore winds kill it, and it stays poor until Friday the 21st. That Friday the 21st morning has a moderate offshore wind and a 6ft SW swell (9-second period), so clean but short period and only 629 (moderate energy). The afternoon has a howling 28 mph offshore wind, making it clean but near-impossible to paddle into. Saturday the 22nd is similar: strong offshore but only 4ft swell.
So, circle the 13th and the 17th. That's your clean, powerful action. Onrus sees crowds when it's good, so expect company.
Short Range ForecastLight rain (total 8mm), mostly falling on Sat night. Very mild (max 17°C on Sat afternoon, min 10°C on Fri morning). Winds increasing (calm on Fri afternoon, fresh winds from the S by Sun morning). | Days 4-6 Weather SummaryMostly dry. Warm (max 21°C on Wed afternoon, min 8°C on Mon night). Winds decreasing (fresh winds from the E on Tue morning, calm by Wed afternoon). | ||||||||||||||||||||
Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | |||||||||||||||
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) | SW 14 | SW 15 | SW 14 | SW 13 | SW 14 | SW 13 | SW 12 | SW 12 | SSW 12 | SW 11 | S 10 | SSW 13 | SSW 12 | S 11 | SW 22 | SW 19 | SW 18 | SW 16 | SW 17 | SW 16 | SW 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 3419 | 4234 | 3119 | 2126 | 4435 | 3732 | 2495 | 3233 | 2037 | 729 | 1085 | 1821 | 1000 | 828 | 1314 | 1967 | 1761 | 1899 | 3016 | 1983 | 1511 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | cross-off | off | cross | cross-on | cross-on | cross-on | on | on | on | cross-on | cross-on | cross-on | cross | cross | cross-on | cross | cross | on | cross |
High Tide | 9:48AM1.08m | 10:22PM1.23m | 11:33AM1.12m | 11:57PM1.28m | 12:51PM1.25m | 1:08AM1.39m | 1:47PM1.41m | 2:02AM1.50m | 2:34PM1.55m | 2:49AM1.57m | 3:16PM1.67m | 3:31AM1.61m | 3:54PM1.73m | 4:09AM1.60m | |||||||
Low Tide | 3:45PM0.57m | 5:11AM0.46m | 5:37PM0.54m | 6:35AM0.36m | 6:59PM0.41m | 7:35AM0.23m | 7:58PM0.27m | 8:23AM0.12m | 8:47PM0.15m | 9:04AM0.04m | 9:30PM0.07m | 9:42AM-0.00m | 10:10PM0.04m | ||||||||
 | |  | |  |  | | |  |  |  | | | | | | | | | | | |
 | 7:31 | — | — | 7:30 | — | — | 7:28 | — | — | 7:28 | — | — | 7:26 | — | — | 7:26 | — | — | 7:24 | — | — |
 | — | 6:06 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:08 | — | — | 6:09 | — | — | 6:10 | — |
mm | — | — | — | — | 1 | 3 | 3 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 16 | 13 | 14 | 17 | 13 | 12 | 13 | 12 | 13 | 13 | 11 | 11 | 16 | 12 | 17 | 21 | 19 | 24 | 26 | 23 |
Feels °C | 10 | 15 | 11 | 10 | 13 | 10 | 6 | 6 | 6 | 7 | 7 | 5 | 4 | 10 | 6 | 13 | 19 | 16 | 20 | 23 | 20 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 15 | SW 14 | SW 13 | SW 14 | SW 13 | SW 12 | SW 12 | SW 12 | SW 11 | S 10 | SSW 13 | SSW 12 | S 11 | SW 22 | SW 19 | SW 18 | SW 16 | SW 17 | SW 16 | SW 15 |
| kJ | 3419 | 4234 | 3119 | 2126 | 4435 | 3732 | 2495 | 2680 | 1600 | 729 | 652 | 1821 | 1000 | 828 | 1314 | 1967 | 1761 | 1899 | 3016 | 1983 | 1511 |
Swell 2 Height (m) Direction Period (s) | E 10 | — | — | — | — | — | E 9 | — | S 13 | S 9 | SW 11 | WSW 11 | SW 26 | SW 24 | SSW 11 | SSW 10 | SSE 10 | SW 21 | ESE 9 | ESE 9 | ESE 9 |
| kJ | 7 | — | — | — | — | — | 6 | — | 3 | 373 | 334 | 76 | 27 | 208 | 238 | 163 | 55 | 1401 | 164 | 119 | 80 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | E 10 | SSW 13 | — | SW 26 | WSW 10 | SE 8 | SE 8 | SW 10 | SSE 10 | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | 2 | 514 | — | 27 | 10 | 98 | 35 | 64 | 38 | — | — | — |
Wind waves Height (m) Direction Period (s) | E 3 | — | — | — | — | — | — | SW 12 | SSW 12 | S 9 | S 10 | E 3 | E 4 | ESE 7 | ESE 8 | — | — | — | — | — | — |
| kJ | 8 | — | — | — | — | — | — | 3233 | 2037 | 665 | 1085 | 5 | 17 | 495 | 492 | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 10 | 25 | 17 | 0 | 83 | 83 | 941 | 2885 | 95 | 4 | 220 | 23 | 38 | 32 | 10 | 4 | 4 | 4 | 10 | 4 | 4 |
Best forecast wave conditions in Overberg | |||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Latest Updates
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