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Surf Forecasts:

Onrus surf break

Onrus surfForecast / Overberg / South Africa

information circle12 Day Weather and Surf, issued 7 am Saturday 17 Jan 2026 SAST
Forecast update in hr  min  s Forecast update imminent
Onrus surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Onrus sea temperature is
17.8° C
 (Which is 2.3°C colder than average for this time of year)

Best Forecast Surf Conditions for Onrus this week:

The surf forecast for Onrus over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Jan 18) at 2AM. The primary swell is predicted to be 3.5m and 11s period with a secondary swell of 3.0m and 11s. The wind is predicted to be cross-shore as the swell arrives.

The most powerful waves expected at Onrus in the next 12 days are 3.5m 12s and forecast to arrive on Sunday (Jan 18) at 8AM. 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 5s period and expected on Saturday (Jan 17) at 5PM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Sun 18th Jan)11ft (3.5m) 11s
Best Surf 2AM (Sun 18th Jan)11ft (3.5m) 11s
Most Powerful 8AM (Sun 18th Jan)11ft (3.5m) 12s

Table - best surf conditions forecast for Onrus over the next 12 days.

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Light rain (total 2mm), mostly falling on Sat night. Warm (max 21°C on Sat afternoon, min 15°C on Sun night). Mainly fresh winds.

Days 3-6 Weather Summary Mostly dry. Warm (max 27°C on Wed afternoon, min 16°C on Tue night). Winds decreasing (strong winds from the ESE on Tue afternoon, calm by Thu night).

Saturday
17
Sunday
18
Monday
19
Tuesday
20
Wednesday
21
Thursday
22
Friday
23
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
1
0
!
!
!
2
1
1
0
0
0
0
0
0
0
0
1
4
3
2
4
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.4
SW
1.5
SW
3.5
SW
3
SW
3
SW
2.3
SW
2
SW
1.7
SW
1.8
SSW
1.8
SSW
1.3
SW
1.4
SW
1.4
SW
1.3
SW
1.1
SW
1.3
SW
1.6
SW
2.1
SSW
1.9
SW
1.8
SW
1.9
SW
Period(s) (?)101011121212111110101113121211131414131212
Wave
Graph
(?)Metric surfscale
Energy kJ (?)35741627382956230214999186636485874065945144482635431002173512499801047
Wind
(km/h)
20
W
35
W
25
SW
15
SSW
15
S
10
E
10
S
15
S
25
ESE
30
ESE
40
ESE
30
E
20
ESE
35
SE
20
ESE
20
SSE
15
S
5
SE
15
SW
20
WSW
15
WSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		cross-
off		crosscrosscross-
on		cross-
on		cross-
on		cross-
on		oncross-
on		oncross-
on		cross-
on		oncross-
on		cross-
on		cross-
on		glasscrosscross-
off		cross-
off
High Tide
/ height (m)
2:46PM
1.40
3:16AM
1.42
3:19PM
1.46
3:48AM
1.49
3:52PM
1.50
4:19AM
1.55
4:24PM
1.51
4:50AM
1.58
4:56PM
1.49
5:22AM
1.59
5:31PM
1.45
5:56AM
1.58
6:09PM
1.38
Low Tide
/ height (m)
8:48AM
0.38
9:07PM
0.21
9:21AM
0.31
9:37PM
0.15
9:53AM
0.26
10:06PM
0.11
10:25AM
0.22
10:35PM
0.10
10:58AM
0.20
11:05PM
0.11
11:32AM
0.21
11:36PM
0.15
12:09PM
0.24
12:11AM
0.22
Saturday
17
Sunday
18
Monday
19
Tuesday
20
Wednesday
21
Thursday
22
Friday
23
Sunrise5:48--5:48--5:50--5:50--5:52--5:52--5:54--
Sunset-7:57--7:57--7:57--7:55--7:55--7:54--7:54-
clear
clear
rain showers
part cloud
part cloud
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
part cloud
Rain (mm)
--2------------------
Temp. °C202119181917192020222521262722232219222221
Feels °C (?)161514151614171818171815222117212018212121
  • Map Icons:
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Onrus surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.

View detailed surf forecast for Onrus at:
surf-forecast.com

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 12 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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