Surf Forecasts:
Onrus surf forecast from 25 Jul 2026:
- Best quality surf: Sunday 26 Jul, 11AM (local time) - 6.5ft (2.0m), 12s period, SW swell with glassy winds.
- Most powerful swell: Monday 27 Jul, 5PM (local time) - 11ft (3.5m), 17s period, SSW swell with 5,938 kJ wave energy.
- Next surfable swell (1★+): Sunday 26 Jul, 11AM (local time) - 6.5ft (2.0m), 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 Sunday (Jul 26) at 11AM. The primary swell is predicted to be 2.0m and 12s period with a secondary swell of 0.9m and 15s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Onrus in the next 16 days are 3.5m 17s and forecast to arrive on Monday (Jul 27) at 5PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 6s period and expected on Tuesday (Jul 28) at 8PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Sun 26th Jul) | 6.5ft (2.0m) 12s |
| Best Surf | 11AM (Sun 26th Jul) | 6.5ft (2.0m) 12s |
| Most Powerful | 5PM (Mon 27th Jul) | 11ft (3.5m) 17s |
Table - best surf conditions forecast for Onrus over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s break it down for the local zone, using feet and miles per hour for you.
Onrus (Western Cape) is the only spot we’ve got forecasted, and it’s a reef break that can be a bit inconsistent. The water temp is about average for the time of year.
The surf window opens Saturday the 25th of July with an 8-foot SW swell and a 12-second period. Combined swell energy is heavy at 1789, but the wind is onshore from the SE at 9 mph. That’s going to be messy and only for strong, experienced surfers.
The first real standout is Sunday the 26th of July in the morning. A 7-foot SW swell, 12-second period, combined energy at 1358. The wind is glassy from the ENE at 3 mph. That is clean, powerful wave action. The afternoon drops off as the wind shifts.
Monday the 27th is a total loss with a massive 12-foot SSW swell (17-second period) and onshore wind at 19 mph. Combined energy hits 5938. Forget about paddle surfing.
The next good window is Wednesday the 29th of July. After a choppy morning, the afternoon goes glassy with a light 3-mph SW wind. Swell is 5 feet from the SW, 13-second period, combined energy at 826. That's the one to book.
Then the week turns flat and small. Thursday and Friday have poor wind. Saturday the 1st and Sunday the 2nd of August are glassy but small—only 3-foot swells with low energy.
Monday the 3rd of August morning brings back quality: glassy conditions, 5-foot SW swell, 14-second period, energy at 947.
The next big standout is Thursday the 6th of August. A 6-foot WSW swell, 12-second period, and cross-off wind from the W at 9 mph. Combined energy at 1027. Clean, powerful, for experienced surfers.
Friday the 7th of August is a danger day. Swell jumps to 10 to 12 feet, with glassy wind but the wave energy at 6739. Too big for this reef.
Into the second week, Saturday the 8th of August morning is excellent: glassy, 6-foot SW swell, 13-second period, energy at 1381. Sunday the 9th sees a very long 17-second period 6-foot swell with cross-on wind. Energy jumps to 3466. Watch that one but don’t count on it being clean.
Best bets: Sunday the 26th morning, Wednesday the 29th afternoon, and Thursday the 6th of August all day. Onrus can be inconsistent, so check the breaks before you drive. Crowds are possible when it’s good.
Rusty.
Short Range ForecastSome drizzle, heaviest during Mon morning. Very mild (max 19°C on Sun morning, min 13°C on Sat night). Winds increasing (calm on Sun morning, strong winds from the E by Tue morning). | Days 5-7 Weather SummaryMostly dry. Very mild (max 18°C on Wed afternoon, min 10°C on Tue night). Winds decreasing (strong winds from the E on Tue afternoon, calm by Wed afternoon). | |||||||||||||||||||
Sat 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | ||||||||||||||
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 12 | SW 12 | SW 12 | SW 12 | SW 13 | SW 17 | SSW 17 | SSW 15 | SW 14 | SSW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SSW 13 | SW 13 | SW 12 | SW 12 | SW 11 |
Wave Graph  | ||||||||||||||||||||
 kJ | 1789 | 1539 | 1040 | 778 | 1259 | 3950 | 5938 | 3670 | 2263 | 2250 | 1280 | 981 | 809 | 649 | 712 | 875 | 529 | 287 | 236 | 189 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross | glassy | cross-on | cross-on | on | on | cross-on | cross-on | cross-on | cross-on | cross | glassy | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross |
High Tide | 1:16AM1.21m | 1:55PM1.21m | 1:58AM1.29m | 2:31PM1.31m | 2:34AM1.36m | 3:04PM1.39m | 3:07AM1.42m | 3:34PM1.47m | 3:39AM1.46m | 4:04PM1.53m | 4:10AM1.48m | 4:34PM1.57m | 4:41AM1.47m | |||||||
Low Tide | 7:17PM0.57m | 7:46AM0.42m | 8:01PM0.49m | 8:23AM0.33m | 8:37PM0.40m | 8:55AM0.25m | 9:10PM0.33m | 9:24AM0.19m | 9:42PM0.28m | 9:52AM0.14m | 10:12PM0.24m | 10:20AM0.12m | 10:43PM0.22m | |||||||
 |  | | |  |  |  | | | | | |  | | | | | | | | |
 | — | — | 7:41 | — | — | 7:41 | — | — | 7:39 | — | — | 7:39 | — | — | 7:37 | — | — | 7:37 | — | — |
 | 5:57 | — | — | 5:58 | — | — | 5:58 | — | — | 5:59 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — |
mm | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 15 | 19 | 18 | 14 | 15 | 14 | 14 | 16 | 17 | 13 | 14 | 18 | 16 | 16 | 18 | 14 | 16 | 20 | 16 |
Feels °C | 14 | 13 | 17 | 16 | 13 | 13 | 8 | 7 | 8 | 9 | 6 | 10 | 17 | 14 | 12 | 13 | 11 | 11 | 16 | 12 |
Swell 1 Height (m) Direction Period (s) | SW 12 | SW 12 | SW 12 | SW 12 | SW 13 | SW 17 | SSW 17 | SSW 15 | SW 14 | SSW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SSW 13 | SW 13 | SW 12 | SW 12 | SW 11 |
| kJ | 1789 | 1539 | 1040 | 778 | 1259 | 3950 | 5938 | 3670 | 2263 | 2250 | 1280 | 981 | 809 | 649 | 712 | 875 | 529 | 287 | 236 | 189 |
Swell 2 Height (m) Direction Period (s) | ESE 11 | ESE 10 | SW 15 | SW 14 | SW 16 | — | — | — | — | — | S 11 | — | SE 7 | SE 8 | ESE 8 | — | — | SE 8 | SE 10 | SSE 8 |
| kJ | 11 | 10 | 318 | 390 | 219 | — | — | — | — | — | 2 | — | 17 | 9 | 6 | — | — | 35 | 44 | 80 |
Swell 3 Height (m) Direction Period (s) | — | — | ESE 10 | ESE 10 | WSW 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | S 7 | SE 10 |
| kJ | — | — | 10 | 9 | 57 | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 68 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | S 6 | — | SE 7 | SE 7 | E 4 | ESE 4 | ENE 3 | ESE 7 | — | ESE 8 | ESE 5 | ESE 4 | ESE 6 | ESE 6 | ENE 4 |
| kJ | — | — | — | — | — | 148 | — | 325 | 189 | 35 | 38 | 5 | 125 | — | 114 | 65 | 25 | 34 | 27 | 5 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 23 | 10 | 0 | 4 | 4 | 206 | 247 | 86 | 45 | 40 | 23 | 10 | 0 | 0 | 4 | 4 | 10 | 23 | 23 | 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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