Surf Forecasts:
Onrus surf forecast from 30 Jul 2026:
- Best quality surf: Wednesday 5 Aug, 11AM (local time) - 10ft (3.0m), 15s period, SW swell with offshore winds.
- Most powerful swell: Wednesday 5 Aug, 5PM (local time) - 13ft (4.0m), 14s period, WSW swell with 5,778 kJ wave energy.
- Next surfable swell (1★+): Saturday 1 Aug, 8AM (local time) - 3ft (0.9m), 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 Saturday (Aug 01) at 8AM. The primary swell is predicted to be 0.9m and 12s period with a secondary swell of 0.6m and 14s. 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 14s and forecast to arrive on Wednesday (Aug 05) at 5PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Wednesday (Aug 05) at 2PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Sat 1st Aug) | 3ft (0.9m) 12s |
| Best Surf | 11AM (Wed 5th Aug) | 10ft (3.0m) 15s |
| Most Powerful | 5PM (Wed 5th Aug) | 13ft (4.0m) 14s |
Table - best surf conditions forecast for Onrus over the next 16 days.
The Lowdown
Rusty here, let’s talk Onrus.
Right now, we’re in a flat spell with the next few days looking pretty average. Thursday the 30th and Friday the 31st are a write-off – cross-onshore wind and choppy surf, not worth paddling out. Saturday the 1st of August is a little better with lighter winds, but still only marginal.
Things clean up on Sunday the 2nd of August. The morning has light cross-offshore wind, and by the afternoon it goes glassy. Swell is around 4ft from the SW with a 13-second period. Water temp is about 60°, which is normal for this time of year. The combined swell energy is moderate at (480). That Sunday afternoon session is the first real good option.
The standout is Monday the 3rd of August. Early morning is dead calm and glassy. Swell is 5ft from the SW, 13-second period, and energy jumps to (734). The waves are clean, the wind is zero – this is the session to aim for. Perfect for an intermediate surfer.
Tuesday the 4th is still clean with cross-offshore wind and 5ft SW swell. A solid backup.
Now, from Wednesday the 5th through Sunday the 9th of August, we get a major swell pulse. Waves hit 10ft to 12ft with very long 15-second periods. Combined energy goes into the thousands (3936, 5090) – that’s strong to very strong. The wind stays offshore and clean for most of it, but for Onrus, it’s way too big. This is expert-only, and even then, it’s a handful. Not for the average surfer.
After that, the 10th and 11th turn poor and choppy again. Then Thursday the 13th of August shows another glassy morning with 4ft WSW swell – clean and calm, but not a standout.
The 14th of August sees cross-onshore wind return, bumping up the waves but losing that clean face.
So, for the best session, Monday the 3rd of August is your day. Glassy, clean, and a nice size. Sunday the 2nd afternoon is your second best bet. The rest is either too small, too choppy, or flat-out too big for Onrus.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Sat afternoon, min 12°C on Thu morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 20°C on Sun morning, min 12°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | |||||||||||||||
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 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 11 | SW 14 | SW 13 | SW 13 | SW 13 | SW 12 | SW 13 | SW 13 | SW 12 | SW 12 | SW 11 | SW 11 | SW 15 | SW 15 | WSW 14 | WSW 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 746 | 600 | 545 | 373 | 278 | 185 | 514 | 431 | 431 | 424 | 486 | 609 | 629 | 678 | 614 | 439 | 334 | 305 | 3778 | 5778 | 4124 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross-on | cross-on | cross | cross | on | cross | cross-off | cross | glassy | cross-on | cross-on | glassy | cross-off | cross-off | off | off | off | cross |
High Tide | 4:04PM1.53m | 4:10AM1.48m | 4:34PM1.57m | 4:41AM1.47m | 5:03PM1.58m | 5:13AM1.44m | 5:34PM1.57m | 5:47AM1.39m | 6:08PM1.53m | 6:26AM1.32m | 6:48PM1.46m | 7:13AM1.23m | 7:37PM1.37m | ||||||||
Low Tide | 9:52AM0.14m | 10:12PM0.24m | 10:20AM0.12m | 10:43PM0.22m | 10:48AM0.13m | 11:14PM0.21m | 11:17AM0.16m | 11:47PM0.23m | 11:49AM0.22m | 00:25AM0.27m | 12:25PM0.30m | 1:09AM0.33m | 1:10PM0.39m | 2:06AM0.41m | |||||||
 |  |  | | |  | | | | | | | | | | | | | | |  | |
 | 7:37 | — | — | 7:37 | — | — | 7:37 | — | — | 7:35 | — | — | 7:35 | — | — | 7:33 | — | — | 7:33 | — | — |
 | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:02 | — | — | 6:02 | — | — | 6:04 | — | — | 6:05 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 |
Temp °C | 15 | 18 | 14 | 17 | 20 | 17 | 20 | 23 | 20 | 20 | 20 | 16 | 18 | 19 | 17 | 16 | 17 | 14 | 15 | 16 | 15 |
Feels °C | 12 | 14 | 11 | 13 | 16 | 14 | 17 | 20 | 18 | 17 | 17 | 15 | 16 | 16 | 16 | 13 | 14 | 12 | 11 | 9 | 10 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 11 | SW 14 | SW 13 | SW 13 | SW 13 | SW 12 | SW 13 | SW 13 | SW 12 | SW 12 | SW 11 | SW 11 | SW 10 | SW 15 | WSW 14 | WSW 14 |
| kJ | 746 | 600 | 545 | 373 | 278 | 185 | 514 | 431 | 431 | 424 | 486 | 609 | 629 | 678 | 614 | 439 | 334 | 163 | 3778 | 4197 | 4124 |
Swell 2 Height (m) Direction Period (s) | ESE 7 | — | SE 6 | SW 19 | ESE 9 | WSW 16 | SE 10 | SE 10 | SE 10 | SE 10 | SSW 16 | SE 12 | ESE 11 | ESE 11 | ESE 11 | ESE 10 | SW 16 | SW 15 | ESE 10 | ESE 10 | ESE 10 |
| kJ | 9 | — | 15 | 14 | 52 | 166 | 35 | 37 | 28 | 16 | 102 | 23 | 12 | 12 | 11 | 11 | 41 | 305 | 31 | 9 | 18 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | SW 18 | SE 10 | — | — | S 9 | S 9 | SE 10 | ESE 12 | — | ESE 11 | ESE 10 | SW 18 | SE 10 | WSW 10 | — | — | — |
| kJ | — | — | — | — | 48 | 32 | — | — | 7 | 6 | 17 | 57 | — | 128 | 110 | 12 | 4 | 20 | — | — | — |
Wind waves Height (m) Direction Period (s) | ESE 7 | ESE 4 | ENE 3 | ESE 8 | ESE 9 | — | — | — | — | — | — | — | — | — | — | — | W 3 | W 5 | NW 3 | WSW 14 | — |
| kJ | 89 | 12 | 4 | 33 | 281 | — | — | — | — | — | — | — | — | — | — | — | 3 | 57 | 5 | 5778 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 4 | 4 | 10 | 4 | 4 | 4 | 4 | 4 | 4 | 0 | 60 | 0 | 4 | 4 | 0 | 0 | 0 | 0 | 17 | 72 | 25 |
Best forecast wave conditions in Overberg | |||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||
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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.
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