
Surf Forecasts:
Onrus surf forecast from 12 Jul 2026:
- Best quality surf: Wednesday 15 Jul, 8PM (local time) - 10ft (3.0m), 14s period, SW swell with cross-shore winds.
- Most powerful swell: Wednesday 15 Jul, 11PM (local time) - 10ft (3.0m), 14s period, SW swell with 3,519 kJ wave energy.
- Next surfable swell (1★+): Monday 13 Jul, 5PM (local time) - 3.5ft (1.0m), 10s period with S 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 Monday (Jul 13) at 5PM. The primary swell is predicted to be 1.0m and 10s period with a secondary swell of 0.4m and 9s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Onrus in the next 16 days are 3.0m 14s and forecast to arrive on Wednesday (Jul 15) at 11PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 7s period and expected on Sunday (Jul 12) at 8PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Mon 13th Jul) | 3.5ft (1.0m) 10s |
| Best Surf | 8PM (Wed 15th Jul) | 10ft (3.0m) 14s |
| Most Powerful | 11PM (Wed 15th Jul) | 10ft (3.0m) 14s |
Table - best surf conditions forecast for Onrus over the next 16 days.
Alright folks, Rusty here. Let’s have a look at what’s on offer for Onrus over the next couple of weeks.
It’s a slow start, but patience will pay off. The first few days are a write-off, with messy, cross-onshore winds and poor surf. Sunday the 12th and Monday the 13th morning are a no-go. The real action starts to build from Monday afternoon.
Monday afternoon, the 13th, we get a bit of a reprieve. The wind goes glassy, and we’re looking at 3ft of swell from the south with a period of 10 seconds. Wave energy is weak (241). It’s small, but it’s clean. A nice little session for a longboard or a foamie.
Tuesday the 14th stays small, around 2ft from the west, with clean conditions thanks to light offshore and cross-offshore winds. Not much push, but it’s surfable.
Then, Wednesday the 15th is where things get interesting. The morning brings a clean 4ft swell from the southwest, but the period jumps to 17 seconds – that’s a proper groundswell. The energy is still moderate (864). The afternoon is the real standout though. The swell builds to 8ft from the southwest, with a 15-second period, and the wind goes glassy. The energy ramps up to 2815 – that’s strong wave energy. This is excellent surf, but at 8ft, this is one for the experienced crew only. The reef at Onrus will handle that long-period energy well, offering up some proper shaped waves.
Thursday the 16th keeps the quality high for the more experienced surfer. 8ft in the morning and 7ft in the afternoon from the southwest, with periods around 13 seconds. Winds are light cross-offshore, keeping the waves clean. Energy is strong (2032 in the morning). It’s a solid day.
Friday the 17th is a step back, with lumpy, onshore winds and poor conditions. Not worth paddling out.
Saturdays the 18th and Sunday the 19th offer a drop in size but better conditions. Expect 5ft to 3ft from the southwest and west-southwest, with light winds and glassy periods. The energy drops to moderate levels. Good for a more relaxed session.
Monday the 20th brings a morning clean-up with 6ft from the west on a short 8-second period, but with offshore winds (688 energy). That short period is a bit of a bummer, but the groomed conditions will make it fun.
Tuesday the 21st is a washout again. Strong cross-onshore winds and a confused 10ft swell from the southwest with a massive 18-second period, but the wind ruins it. The energy is extreme (6542), but it’s just a mess for paddling.
From Wednesday the 22nd all the way through to Monday the 27th, the swell is just too big for Onrus. We’re talking 10ft to 13ft, with periods of 14 to 17 seconds. Energy readings are in the thousands and even up to 6945. While the winds are often offshore or glassy, the forecast says this break can’t handle that much water. This is strictly a look-don’t-touch situation, even for experts. The swell is too big for this reef.
Best on offer: The clear standout is the afternoon of Wednesday the 15th. That 8ft, 15-second southwest groundswell with glassy conditions is the pick of the entire 16 days. It’s big, it’s powerful, and it’s clean. Only for the experienced. Thursday the 16th morning is a close second for the same crew.
Rusty
Short Range ForecastMostly dry. Very mild (max 18°C on Sun afternoon, min 11°C on Sun morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 18°C on Thu afternoon, min 11°C on Fri night). Winds increasing (calm on Wed afternoon, fresh winds from the E by Fri night). | ||||||||||||||||||||
Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | |||||||||||||||
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) | S 11 | S 11 | S 10 | S 10 | S 10 | W 12 | W 11 | W 10 | SW 18 | SW 17 | SW 15 | SW 14 | SW 13 | SW 13 | SW 12 | SW 11 | SSW 11 | SSW 10 | SSW 14 | SW 13 | SW 13 |
Wave Graph | |||||||||||||||||||||
533 | 434 | 296 | 196 | 184 | 137 | 112 | 96 | 108 | 702 | 2758 | 3373 | 2032 | 1583 | 1902 | 1109 | 999 | 726 | 1388 | 905 | 473 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross | glassy | cross-off | off | cross-off | off | off | glassy | glassy | cross-off | cross-off | cross-off | on | cross-on | cross-on | cross | cross | cross-off |
High Tide | 1:50PM1.39m | 2:04AM1.54m | 2:42PM1.51m | 2:56AM1.59m | 3:29PM1.60m | 3:44AM1.61m | 4:14PM1.66m | 4:29AM1.59m | 4:57PM1.67m | 5:12AM1.52m | 5:38PM1.64m | 5:54AM1.43m | 6:19PM1.56m | ||||||||
Low Tide | 7:55PM0.28m | 8:30AM0.10m | 8:50PM0.19m | 9:17AM0.04m | 9:40PM0.12m | 10:01AM0.01m | 10:27PM0.10m | 10:42AM0.02m | 11:12PM0.12m | 11:22AM0.08m | 11:56PM0.18m | 12:01PM0.17m | 00:40AM0.26m | ||||||||
7:48 | — | — | 7:48 | — | — | 7:48 | — | — | 7:47 | — | — | 7:47 | — | — | 7:46 | — | — | 7:46 | — | — | |
— | 5:49 | — | — | 5:49 | — | — | 5:50 | — | — | 5:51 | — | — | 5:51 | — | — | 5:52 | — | — | 5:52 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 18 | 14 | 16 | 17 | 15 | 16 | 17 | 14 | 16 | 17 | 15 | 17 | 18 | 16 | 15 | 14 | 13 | 15 | 20 | 19 |
Feels °C | 10 | 15 | 11 | 14 | 15 | 14 | 14 | 14 | 11 | 14 | 16 | 15 | 15 | 15 | 14 | 14 | 9 | 7 | 12 | 19 | 18 |
Swell 1 Height (m) Direction Period (s) | S 11 | S 11 | S 10 | S 10 | S 10 | W 12 | W 11 | W 10 | W 9 | SW 17 | SW 15 | SW 14 | SW 13 | SW 13 | SW 12 | SW 11 | SSW 11 | SSW 10 | SSW 14 | SW 13 | SW 13 |
533 | 434 | 296 | 196 | 184 | 137 | 112 | 96 | 87 | 702 | 2758 | 3373 | 2032 | 1583 | 1902 | 1109 | 999 | 726 | 1388 | 905 | 473 | |
Swell 2 Height (m) Direction Period (s) | W 11 | W 11 | W 10 | W 10 | W 9 | SSW 10 | SSE 9 | S 9 | SW 18 | WSW 8 | W 9 | ESE 9 | E 9 | E 10 | E 10 | — | SW 19 | SW 16 | WSW 10 | S 8 | S 10 |
58 | 57 | 50 | 30 | 27 | 61 | 47 | 39 | 108 | 84 | 57 | 17 | 7 | 7 | 8 | — | 14 | 93 | 33 | 35 | 65 | |
Swell 3 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SSE 9 | SSW 9 | SW 12 | SW 12 | W 9 | — | — | — | — | — | — | — | — | S 12 | W 10 | W 10 |
41 | 38 | 33 | 31 | 30 | 65 | 31 | 52 | 37 | 78 | — | — | — | — | — | — | — | — | 11 | 53 | 54 | |
Wind waves Height (m) Direction Period (s) | E 4 | SE 7 | ENE 3 | — | — | — | WNW 3 | W 4 | W 4 | — | — | — | — | — | — | E 10 | ESE 4 | E 4 | ESE 7 | — | — |
9 | 210 | 1 | — | — | — | 2 | 10 | 8 | — | — | — | — | — | — | 8 | 21 | 18 | 121 | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 23 | 4 | 4 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 10 | 0 | 45 | 0 | 91 | 23 | 38 | 4 | 4 | 0 |
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.










