Onrus Surf Break

Lat Long: 34.41° S 19.17° E

Onrus Surf Forecast and Surf Report

Issued: 1 am 28 Jul 2026 (local time)

Forecast update in  hr  min

Today's Onrus sea temperature is
15.5° C
0.1° 

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


Onrus surf forecast from 28 Jul 2026:

  • Best quality surf: Monday 3 Aug, 11AM (local time) - 7ft (2.2m), 14s period, SW swell with glassy winds.
  • Most powerful swell: Tuesday 28 Jul, 11AM (local time) - 10ft (3.0m), 14s period, SSW swell with 3,170 kJ wave energy.
  • Next surfable swell (1★+): Saturday 1 Aug, 5AM (local time) - 3ft (0.9m), 11s 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 5AM. The primary swell is predicted to be 0.9m and 11s period with a secondary swell of 0.6m and 15s. 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 3.0m 14s and forecast to arrive on Tuesday (Jul 28) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.8m 6s period and expected on Tuesday (Jul 28) at 5PM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Sat 1st Aug)3ft (0.9m) 11s
Best Surf11AM (Mon 3rd Aug)7ft (2.2m) 14s
Most Powerful11AM (Tue 28th Jul)10ft (3.0m) 14s

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


The Lowdown

Alright, this is Rusty. Let's get into it.

The next week and a half is a real mixed bag for Onrus. We've got some serious swell pulses coming through, but the wind is going to be the main character for the first few days. It’s a reef break, exposed to SW swell, and it’s inconsistent, so don't expect it to be firing every day. The water temp is sitting at 59.9°F which is pretty much bang on average for this time of year.

The first few days, from the 28th of July right through to the 31st, are a write-off. The wind is howling from the east, cross-onshore, and the combined swell energy is moderate at best, with values around 3406 (Tuesday) dropping to 331 (Friday afternoon). The wave comment says it all: poor surf conditions. The swell is there, but it's messy and lumpy. Don't bother paddling out.

There's a slight glimmer on Saturday the 1st of August. The morning is still messy with a cross-shore wind, but the afternoon goes glassy. The swell is small at 3.6ft from the SW, with a period of 13 seconds, and the combined energy is a weak 470. It'll be clean, but small. It's a good one for a longboard or a funboard if you're just keen to get wet.

Sunday the 2nd of August looks better. The morning is clean with a light cross-offshore wind, 4.3ft SW swell, and 514 combined energy. It's very surfable, but not a standout.

The standout window is Monday the 3rd of August. The early morning is glassy with a 7.2ft SW swell, period of 14 seconds, and a combined energy of 2032. The afternoon is just as good, glassy again, with a 6.9ft swell. This is excellent surf for experienced surfers. The wave comment confirms it: excellent surf conditions. If you’re comfortable in overhead waves, this is the day to be on it.

Tuesday the 4th of August is a letdown after that. The morning is glassy with a 5.6ft swell, but it drops off in the afternoon to a messy cross-shore wind and smaller swell.

Wednesday the 5th of August has a solid 8.2ft SW swell, with a long period of 15 seconds in the morning. The wind is offshore, which is great, but the combined energy is a strong 2742. It’s clean, but that size and period can make it a bit of a ledge at a reef break. It's a good one, but be aware.

Thursday the 6th of August is a skip. The swell is way too big, hitting 9.8ft in the morning and 11.5ft in the afternoon. The combined energy is massive at 3314 and 4522. The guidance says it's too big for this break. Even with favorable wind, it's a no-go for paddle surfing.

The second week has a few more pulses. The 9th of August (Sunday) has a massive 11.5ft swell in the morning, but it's too big again. The afternoon drops to 7.5ft with clean conditions. The 10th (Monday) looks good in the morning with a 6.6ft SSW swell and offshore winds, energy at 1443. The 11th (Tuesday) is the absolute standout of the whole forecast. The morning is glassy, with a 8.2ft SW swell, a very long period of 15 seconds, and a combined energy of 2708. The afternoon is glassy again, but the swell jumps to 11.5ft with a period of 17 seconds and energy at 6726. That is too big for this break, so only the morning window is the one to watch. It's a promising long-range call, but less certain this far out.

After the 11th, the 12th of August sees the swell stay too big, with 11.5ft waves and onshore winds, so it's a washout.

Short Range Forecast

Mostly dry. Very mild (max 19°C on Thu afternoon, min 10°C on Tue night). Winds decreasing (strong winds from the E on Tue afternoon, light winds from the E by Wed afternoon).

Days 4-6 Weather Summary

Mostly dry. Warm (max 23°C on Sat afternoon, min 14°C on Sun night). Wind will be generally light.

Tuesday
28
Wednesday
29
Thursday
30
Friday
31
Saturday
1
Sunday
2
Monday
3
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
2
0
1
0
1
1
0
1
2
2
3
3
2
3
4
4
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
3
SSW
14
2.5
SSW
14
2.1
SW
13
1.8
SSW
13
1.8
SW
13
1.6
SW
13
1.4
SW
13
1.3
SW
13
1.3
SW
13
1.1
SW
12
1
SW
12
0.9
SW
11
1.1
SW
14
1.1
SW
13
1.3
SW
13
1.3
SW
12
1.1
SW
12
1.3
SW
13
2.2
SW
14
2.1
SW
14
1.9
SW
12
Wave Graph
Metric surfscale
Energy kJ
3170
2717
1502
1151
1127
919
680
600
545
373
282
185
514
431
560
494
367
534
2032
1712
1095
Wind (km/h)
35
E
40
E
30
E
25
ENE
15
E
20
ENE
15
ENE
20
E
15
ENE
10
ENE
15
E
10
NE
10
NE
5
WSW
10
NW
5
W
10
SW
10
NE
0
E
5
S
5
ENE
Wind State
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross
cross-on
cross
cross
glassy
off
cross-off
cross
cross
glassy
glassy
cross-on
High Tide
3:04PM1.39m
3:07AM1.42m
3:34PM1.47m
3:39AM1.46m
4:04PM1.53m
4:10AM1.48m
4:34PM1.57m
4:41AM1.47m
5:03PM1.58m
5:13AM1.44m
5:34PM1.57m
5:47AM1.39m
6:08PM1.53m
Low Tide
8:55AM0.25m
9:10PM0.33m
9:24AM0.19m
9:42PM0.28m
9:52AM0.14m
10:12PM0.24m
10:20AM0.12m
10:43PM0.22m
10:48AM0.13m
11:14PM0.21m
11:17AM0.16m
11:47PM0.23m
11:49AM0.22m
00:25AM0.27m
clear
clear
clear
clear
clear
part cloud
part cloud
clear
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:39
7:39
7:37
7:37
7:37
7:35
7:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:59
6:00
6:00
6:00
6:01
6:02
6:02
 mm
Temp °C
15
16
13
14
18
15
15
19
15
18
20
18
21
23
20
18
19
15
16
17
15
Feels °C
7
8
7
9
14
12
11
16
11
15
17
14
17
21
17
16
16
16
16
16
14
  • 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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