Onrus Surf Break

Lat Long: 34.41° S 19.17° E

Onrus Surf Forecast and Surf Report

Issued: 7 am 01 Aug 2026 (local time)

Forecast update in  hr  min

Today's Onrus sea temperature is
15.3° C
0.3° 

Onrus surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Onrus surf forecast from 1 Aug 2026:

  • Best quality surf: Wednesday 5 Aug, 2PM (local time) - 10ft (3.0m), 14s period, WSW swell with offshore winds.
  • Most powerful swell: Saturday 8 Aug, 11AM (local time) - 15ft (4.5m), 15s period, SW swell with 9,383 kJ wave energy.
  • Next surfable swell (1★+): Saturday 1 Aug, 2PM (local time) - 3.5ft (1.1m), 14s 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 2PM. The primary swell is predicted to be 1.1m and 14s period. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Onrus in the next 16 days are 4.5m 15s and forecast to arrive on Saturday (Aug 08) at 11AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 6s period and expected on Wednesday (Aug 05) at 11AM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 2PM (Sat 1st Aug)3.5ft (1.1m) 14s
Best Surf 2PM (Wed 5th Aug)10ft (3.0m) 14s
Most Powerful11AM (Sat 8th Aug)15ft (4.5m) 15s

Table - best surf conditions forecast for Onrus over the next 16 days.


The Lowdown

Right, let’s get into it. Onrus is a reef setup that’s exposed to the SW, and it’s inconsistent, so when it’s on, it’s a gem, but it takes a bit of patience. The water’s sitting at 60°F, which is about bang on average for this time of year.

We start off with a slow start. Saturday the 1st and Sunday the 2nd have small, clean surf with 4ft SW swell, but it’s marginal and the tide might be a pain. Conditions are glassy though, so if you’re keen for a longboard or a funboard, you could get a few. The combined swell energy is moderate (431 to 524) – enough to get moving, but nothing to get excited about.

Monday the 3rd is where it starts to pick up. The morning is glassy, calm, with a 5ft SW swell, period 13 seconds, and the energy jumps to 737. That’s a solid, clean wave – a real standout for the early part of the week. The afternoon holds 5ft SW with glassy conditions too. This is the best on offer for the first few days.

Tuesday the 4th stays clean with a cross-offshore wind, but the swell drops back to 4ft to 4ft and the energy fades to 375-415. Still surfable, but nothing special.

Now, Wednesday the 5th is a different beast. The morning brings a 7ft SW groundswell, period 14 seconds, with a clean offshore wind from the NW. The combined energy is 1911 – that’s strong. This is for experienced surfers only, as it’s over 8ft by the afternoon, hitting 12ft with a fresh offshore wind, and the energy goes through the roof at 6859. That’s too big for this reef, honestly. It’s a standout for the crew who know what they’re doing, but it’s a big, powerful wave.

From Thursday the 6th through to the 11th, it’s a write-off. Swell is 10ft to 20ft, the wind is all over the place – cross-on, onshore, and strong – and the energy is huge (up to 20031). The surf is too big, messy, and dangerous. This is not a paddle surfing situation; it’s more of a kite surfing circus if anything.

There’s a big gap from the 6th to the 14th with no good recommendations. The 12th and 13th show some drop in swell (4ft to 6ft), but the wind is cross-on or onshore, and the energy is still high, making it choppy and poor. Not worth it.

Saturday the 15th sees a slight improvement – 7ft WSW swell, period 14 seconds, but the wind is cross-shore, and the energy is 1590. It’s marginal, but it’s the first time in a week that it’s not completely blown out.

Then Sunday the 16th brings a massive 15ft to 16ft WSW swell, period 12 seconds, with glassy conditions in the morning. The energy is 5387. This is way too big for Onrus, only for the most experienced, and even then, it’s a risk.

So, the standout for the whole period is Monday the 3rd – clean, glassy, 5ft to 5ft SW swell with a nice 13-second period. That’s the one to aim for. Wednesday the 5th morning is a solid second pick for the experienced crew, with clean 7ft waves and offshore wind, but it gets too big later.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 23°C on Sat afternoon, min 15°C on Mon night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 6mm), mostly falling on Wed night. Very mild (max 18°C on Wed afternoon, min 11°C on Thu night). Winds decreasing (fresh winds from the WNW on Wed afternoon, calm by Thu morning).

Saturday
1
Sunday
2
Monday
3
Tuesday
4
Wednesday
5
Thursday
6
Friday
7
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
2
1
2
3
3
3
3
3
2
2
2
4
!
!
!
!
!
!
4
!
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.1
SW
14
1.1
SW
13
1.1
SW
13
1.1
SW
13
1.2
SW
12
1.3
SW
13
1.4
SW
13
1.3
WSW
13
1.4
SW
12
1.3
WSW
11
1.2
SW
11
0.7
SW
14
2.3
SW
14
3.5
WSW
14
3.5
SW
13
3.5
SW
13
3.5
SW
12
3
SW
13
3
SW
14
2.5
SW
14
3.5
SW
13
Wave Graph
Metric surfscale
Energy kJ
514
431
431
424
442
609
629
536
568
403
328
206
2155
4338
4936
3700
3214
3271
2866
2223
4429
Wind (km/h)
10
NE
5
SE
15
NE
5
N
5
E
5
ENE
0
S
5
S
5
NNE
5
SW
5
SW
10
WNW
15
NW
30
NW
20
W
0
WSW
15
SE
20
ENE
5
NNW
15
WSW
10
WNW
Wind State
cross
glassy
cross
glassy
glassy
glassy
glassy
glassy
glassy
glassy
glassy
off
off
off
cross-off
glassy
on
cross-on
cross-off
cross-off
off
High Tide
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
8:16AM1.13m
8:47PM1.27m
9:48AM1.08m
10:22PM1.23m
Low Tide
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
2:11PM0.50m
3:28AM0.47m
3:45PM0.57m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
rain showers
light rain
cloud
part cloud
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:37
7:35
7:35
7:33
7:33
7:31
7:31
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:01
6:02
6:02
6:04
6:05
6:06
6:06
 mm
5
1
Temp °C
21
23
20
21
21
17
18
19
17
16
17
14
17
18
15
13
14
13
15
15
13
Feels °C
17
21
17
18
17
16
17
17
15
15
15
14
12
11
11
13
12
10
14
12
11
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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