Surf Forecasts:
Onrus surf forecast from 19 Jul 2026:
- Best quality surf: Thursday 23 Jul, 11PM (local time) - 11ft (3.5m), 16s period, SW swell with cross-shore winds.
- Most powerful swell: Friday 24 Jul, 2AM (local time) - 11ft (3.5m), 16s period, SW swell with 5,937 kJ wave energy.
- Next surfable swell (1★+): Sunday 19 Jul, 8PM (local time) - 7.5ft (2.3m), 10s 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 19) at 8PM. The primary swell is predicted to be 2.3m and 10s period with a secondary swell of 0.5m and 11s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Onrus in the next 16 days are 3.5m 16s and forecast to arrive on Friday (Jul 24) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 5s period and expected on Wednesday (Jul 22) at 8PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Sun 19th Jul) | 7.5ft (2.3m) 10s |
| Best Surf | 11PM (Thu 23rd Jul) | 11ft (3.5m) 16s |
| Most Powerful | 2AM (Fri 24th Jul) | 11ft (3.5m) 16s |
Table - best surf conditions forecast for Onrus over the next 16 days.
The Lowdown
Alright, let’s talk about Onrus. It’s a reef break that’s inconsistent, so you’ve gotta pick your moments. The water temp is sitting around 60°F, which is bang on average for this time of year – no surprises there. Crowds can pop up sometimes, but when it’s good, it’s worth sharing.
The first few days are just warm-ups. Sunday afternoon the 19th has a 7.9ft WSW swell with a 10-second period, cross-off wind, but it’s marginal – nothing to get excited about. Monday the 20th cleans up a bit: morning brings 5.6ft SW at 10 seconds, cross-off, and the afternoon drops to 3.9ft but still clean. Decent for a slow session, but not the standout.
Then Tuesday morning the 21st – that’s the one. The swell hits 7.5ft from the SW, period stretching to 14 seconds, and the wind is glassy. That’s proper groundswell, long lines, and the reef will handle it beautifully. The combined energy is 2083 – solid, meaty. This is for experienced surfers only; it’s got some punch. Afternoon gets a bit cross-on and bigger at 8.2ft, less ideal.
Wednesday the 22nd is cross-off both sessions, 6.9ft SW with 12-second period, but the energy is a step down – still clean, but not as special. Thursday the 23rd morning has offshore NW wind and 6.2ft WSW, then afternoon sees 5.2ft WSW with cross-off and a score that’s excellent for experienced surfers – clean and lined up. Good, but not the top pick.
Friday the 24th morning is a 9.8ft SW swell with 14 seconds – too big for this break, and cross-on wind makes it a mess. Afternoon is still too big and choppy. Saturday the 25th is cross-on and messy, best left alone. Sunday the 26th afternoon finally gets a break: 5.9ft SW, 11 seconds, cross-off wind, and the energy is 1017 – clean and fun. Monday the 27th morning is glassy with 6.6ft SW at 12 seconds, energy 1261 – another excellent window for experienced surfers. But after that lunchtime, the wind swings onshore and it turns poor.
Then we hit a rough patch. From Tuesday the 28th through to Saturday the 1st of August, it’s strong cross-onshore winds – 19–28 mph – and lumpy, messy surf. The swell is still there, but it’s not rideable. No recommendations in that stretch.
Sunday the 2nd of August brings a change. Morning has 6.9ft SW at a very long 17 seconds, cross-shore wind, energy 2539 –
Short Range ForecastSome drizzle, heaviest during Sun afternoon. Very mild (max 16°C on Mon afternoon, min 11°C on Tue night). Winds decreasing (fresh winds from the WNW on Sun afternoon, calm by Mon night). | Days 5-7 Weather SummaryMostly dry. Very mild (max 18°C on Fri afternoon, min 12°C on Fri morning). Wind will be generally light. | |||||||||||||||||||
Sun 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | ||||||||||||||
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) | WSW 10 | SW 11 | SW 10 | SW 9 | SSW 16 | SW 14 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | WSW 10 | WSW 10 | SW 16 | SW 14 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 |
Wave Graph  | ||||||||||||||||||||
 kJ | 1035 | 1086 | 535 | 215 | 314 | 2037 | 2172 | 1569 | 1209 | 1293 | 781 | 717 | 530 | 5937 | 3777 | 2703 | 1890 | 1724 | 1313 | 1013 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross-off | cross-off | off | glassy | cross-on | cross | cross-off | cross-off | cross-off | off | cross-off | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on |
High Tide | 7:00PM1.46m | 7:20AM1.21m | 7:44PM1.34m | 8:10AM1.10m | 8:34PM1.23m | 9:16AM1.02m | 9:41PM1.14m | 10:45AM1.00m | 11:04PM1.11m | 12:12PM1.04m | 00:20AM1.14m | 1:12PM1.12m | 1:16AM1.21m | |||||||
Low Tide | 1:24AM0.36m | 1:19PM0.41m | 2:12AM0.46m | 2:05PM0.53m | 3:12AM0.54m | 3:08PM0.63m | 4:32AM0.59m | 4:43PM0.67m | 5:58AM0.57m | 6:16PM0.65m | 7:01AM0.50m | 7:17PM0.57m | ||||||||
 |  |  | |  | |  | | | | |  | | | | | | | | | |
 | — | — | 7:45 | — | — | 7:43 | — | — | 7:43 | — | — | 7:43 | — | — | 7:43 | — | — | 7:41 | — | — |
 | 5:52 | — | — | 5:53 | — | — | 5:53 | — | — | 5:54 | — | — | 5:55 | — | — | 5:55 | — | — | 5:57 | — |
mm | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 14 | 15 | 16 | 14 | 13 | 14 | 13 | 14 | 15 | 13 | 15 | 16 | 14 | 14 | 18 | 14 | 16 | 20 | 15 |
Feels °C | 10 | 11 | 13 | 14 | 12 | 12 | 13 | 11 | 11 | 11 | 9 | 12 | 13 | 13 | 11 | 16 | 12 | 13 | 17 | 12 |
Swell 1 Height (m) Direction Period (s) | SSE 10 | SW 11 | SW 10 | SW 9 | SW 8 | SW 14 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | WSW 10 | WSW 10 | SW 16 | SW 14 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 |
| kJ | 32 | 1086 | 535 | 215 | 96 | 2037 | 2172 | 1569 | 1209 | 1293 | 781 | 717 | 530 | 5937 | 3777 | 2703 | 1890 | 1724 | 1313 | 1013 |
Swell 2 Height (m) Direction Period (s) | SSE 9 | SE 10 | W 9 | SW 11 | SSW 16 | W 9 | SE 12 | ESE 11 | SSW 15 | SSW 14 | SSW 12 | SSW 11 | SSW 11 | SE 12 | SE 12 | SE 11 | SSW 16 | SSW 13 | — | SE 4 |
| kJ | 8 | 23 | 60 | 140 | 314 | 25 | 21 | 12 | 21 | 105 | 59 | 200 | 427 | 35 | 34 | 20 | 151 | 980 | — | 3 |
Swell 3 Height (m) Direction Period (s) | E 10 | SSE 9 | SE 9 | W 10 | SW 12 | SE 12 | W 9 | — | SE 11 | SE 11 | SE 14 | SE 13 | SW 17 | — | — | — | — | ESE 11 | — | — |
| kJ | 2 | 17 | 13 | 45 | 93 | 21 | 14 | — | 5 | 5 | 7 | 7 | 224 | — | — | — | — | 11 | — | — |
Wind waves Height (m) Direction Period (s) | WSW 10 | — | — | W 10 | — | — | — | — | — | WNW 4 | NW 4 | — | — | — | — | — | — | — | SE 3 | ENE 3 |
| kJ | 1035 | — | — | 122 | — | — | — | — | — | 31 | 21 | — | — | — | — | — | — | — | 4 | 1 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 50 | 0 | 0 | 0 | 0 | 0 | 32 | 10 | 17 | 72 | 8 | 0 | 0 | 32 | 34 | 23 | 10 | 10 | 23 | 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.
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