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Surf Forecasts:
Onrus surfForecast / Overberg / South Africa
16 Day Weather and Surf, issued 1 pm Monday 27 Apr 2026 SASTForecast update in hr min s Forecast update imminent
Onrus surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Onrus sea temperature is
18.3° C
(Which is slightly warmer than usual)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 Thursday (Apr 30) at 8PM. The primary swell is predicted to be 2.5m and 15s period with a secondary swell of 0.5m and 12s. 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 4.5m 13s and forecast to arrive on Monday (May 04) at 11AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 6s period and expected on Friday (May 01) at 5PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Thu 30th Apr) | 8ft (2.5m) 15s |
| Best Surf | 2AM (Sat 2nd May) | 11ft (3.5m) 12s |
| Most Powerful | 11AM (Mon 4th May) | 15ft (4.5m) 13s |
Table - best surf conditions forecast for Onrus over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 3mm), mostly falling on Mon night. Very mild (max 18°C on Wed afternoon, min 11°C on Wed morning). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 20°C on Sun morning, min 13°C on Thu night). Winds increasing (light winds from the SW on Thu afternoon, strong winds from the NW by Fri afternoon). | ||||||||||||||||||||
Mon 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 1 | Saturday 2 | Sunday 3 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
S 10 | S 10 | S 11 | S 12 | S 12 | S 13 | S 13 | SSE 12 | SW 13 | SSW 15 | SW 14 | SW 13 | SW 12 | WSW 12 | WSW 11 | WSW 11 | WSW 10 | WSW 10 | WSW 10 | WSW 10 | SW 13 | |
1046 | 937 | 990 | 1255 | 1146 | 1273 | 957 | 609 | 700 | 2111 | 2764 | 1863 | 1742 | 3496 | 1242 | 972 | 573 | 433 | 523 | 575 | 6594 | |
Wind (km/h) | |||||||||||||||||||||
cross-off | cross-on | on | on | cross-on | cross-on | on | cross-on | on | cross | off | off | off | cross-off | off | off | cross-off | off | off | cross-off | cross-off | |
High Tide | 1:13AM1.46m | 1:40PM1.34m | 1:47AM1.52m | 2:13PM1.40m | 2:19AM1.55m | 2:44PM1.44m | 2:48AM1.56m | 3:13PM1.46m | 3:18AM1.54m | 3:43PM1.45m | 3:48AM1.51m | 4:13PM1.42m | 4:18AM1.45m | ||||||||
Low Tide | 7:04PM0.35m | 7:39AM0.24m | 7:41PM0.30m | 8:11AM0.18m | 8:14PM0.26m | 8:40AM0.14m | 8:45PM0.24m | 9:08AM0.13m | 9:15PM0.24m | 9:36AM0.14m | 9:44PM0.26m | 10:04AM0.18m | 10:14PM0.30m | 10:33AM0.23m | |||||||
 |  | | |  |  | | | | |  | | | | |  | | | | | | |
 | — | — | 7:15 | — | — | 7:16 | — | — | 7:16 | — | — | 7:18 | — | — | 7:18 | — | — | 7:18 | — | — | 7:20 |
 | 6:06 | — | — | 6:05 | — | — | 6:04 | — | — | 6:02 | — | — | 6:01 | — | — | 6:00 | — | — | 6:00 | — | 5:59 |
— | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | |
Temp °C | 15 | 14 | 15 | 16 | 15 | 15 | 18 | 15 | 15 | 17 | 15 | 17 | 19 | 16 | 18 | 17 | 18 | 20 | 22 | 17 | 18 |
10 | 10 | 13 | 13 | 12 | 11 | 14 | 11 | 14 | 15 | 12 | 13 | 13 | 10 | 15 | 15 | 17 | 17 | 16 | 14 | 12 | |
Swell 1 Height (m) Direction Period (s) | S 10 | S 10 | S 11 | S 12 | S 12 | S 13 | S 13 | SSE 12 | SW 13 | SSW 15 | SW 14 | SW 13 | SW 12 | WSW 12 | WSW 11 | SSW 11 | WSW 10 | WSW 10 | S 10 | WSW 14 | SW 13 |
 kJ | 1046 | 937 | 990 | 1255 | 1146 | 1273 | 957 | 609 | 700 | 2111 | 2764 | 1863 | 1742 | 2341 | 1242 | 198 | 573 | 433 | 244 | 290 | 6594 |
Swell 2 Height (m) Direction Period (s) | WSW 10 | SW 11 | SW 10 | SW 10 | SW 10 | SW 10 | SW 13 | SW 13 | SSE 12 | SSE 12 | SSE 11 | SE 10 | SE 10 | S 15 | SSW 11 | S 14 | SSW 11 | S 11 | WSW 15 | S 10 | SSE 12 |
| kJ | 794 | 458 | 328 | 260 | 222 | 160 | 495 | 552 | 308 | 145 | 23 | 16 | 4 | 40 | 217 | 62 | 254 | 381 | 272 | 125 | 164 |
Swell 3 Height (m) Direction Period (s) | S 19 | E 10 | SW 15 | SSW 16 | SW 16 | SW 14 | SW 13 | SSW 16 | E 10 | SSE 12 | — | — | — | — | S 15 | SW 18 | WSW 16 | WSW 15 | SSW 15 | SSW 13 | — |
| kJ | 7 | 2 | 8 | 25 | 40 | 100 | 249 | 26 | 2 | 289 | — | — | — | — | 17 | 83 | 177 | 291 | 21 | 137 | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | SE 4 | — | — | — | WNW 3 | WNW 5 | WNW 6 | WSW 12 | NW 6 | WSW 11 | — | — | WSW 10 | WSW 10 | — |
| kJ | — | — | — | — | — | — | 10 | — | — | — | 7 | 59 | 114 | 3496 | 269 | 972 | — | — | 523 | 575 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 67 | 38 | 10 | 23 | 10 | 23 | 83 | 4 | 4 | 32 | 0 | 0 | 335 | 199 | 0 | 0 | 0 | 0 | 0 | 50 | 220 |
Best forecast wave conditions in Overberg | |||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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.
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