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Surf Forecasts:

Onrus surf break

Onrus surfForecast / Overberg / South Africa

information circle16 Day Weather and Surf, issued 7 pm Friday 13 Mar 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
18.0° C
 (Which is 1.6°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 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Mar 17) at 11AM. The primary swell is predicted to be 1.3m and 11s period with a secondary swell of 0.1m and 19s. Another secondary swell of 0.6m and 6s is also forecast. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Onrus in the next 16 days are 2.5m 12s and forecast to arrive on Friday (Mar 20) at 8AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 5s period and expected on Thursday (Mar 19) at 2PM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+)11AM (Tue 17th Mar)4.5ft (1.3m) 11s
Best Surf 5AM (Thu 19th Mar)5ft (1.6m) 16s
Most Powerful 8AM (Fri 20th Mar)8ft (2.5m) 12s

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

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

Short Range Forecast Some drizzle, heaviest during Mon afternoon. Warm (max 27°C on Sun afternoon, min 19°C on Fri night). Winds increasing (light winds from the SE on Fri night, fresh winds from the ESE by Sat afternoon).

Days 3-6 Weather Summary Light rain (total 6mm), mostly falling on Tue afternoon. Warm (max 25°C on Tue morning, min 20°C on Tue night). Winds increasing (calm on Tue night, fresh winds from the WNW by Thu afternoon).

Saturday
14
Sunday
15
Monday
16
Tuesday
17
Wednesday
18
Thursday
19
Fri
20
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
2
0
0
0
0
0
1
0
0
0
2
2
3
3
1
2
3
2
3
3
2
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.8
SW
1.6
WSW
1.4
WSW
0.9
WSW
0.9
SW
0.8
SW
1.3
SSW
1.4
SSW
1.4
SSW
1.4
SSW
1.3
SSW
1.3
SSW
1.3
SSW
1.2
SW
1.3
SW
1.4
SSW
1.7
SSW
1.6
SSW
1.6
SSW
2.5
SW
2.1
SSW
Period(s) (?)151413121110131212121111111113131414131110
Wave
Graph
(?)Metric surfscale
Energy kJ (?)1415957649247172153497536518509411403396334552620117510148621539890
Wind
(km/h)
15
ESE
20
ESE
35
ESE
25
E
15
SE
25
SE
15
E
20
SSE
25
SE
20
E
5
SSE
10
SW
5
N
5
SSW
15
SSE
10
ENE
20
W
35
WNW
25
NW
20
WSW
15
SW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
onononcross-
on		ononcross-
on		ononcross-
on		glasscross-
off		glassglasscross-
on		cross-
on		cross-
off		cross-
off		offcross-
off		cross
High Tide
/ height (m)
12:46AM
1.09
12:50PM
1.14
1:22AM
1.24
1:29PM
1.28
1:53AM
1.40
2:03PM
1.40
2:22AM
1.54
2:35PM
1.51
2:52AM
1.67
3:08PM
1.59
3:23AM
1.75
3:42PM
1.63
3:55AM
1.79
4:16PM
1.63
Low Tide
/ height (m)
6:58AM
0.61
7:12PM
0.46
7:34AM
0.46
7:43PM
0.32
8:05AM
0.31
8:12PM
0.20
8:35AM
0.17
8:42PM
0.11
9:06AM
0.06
9:12PM
0.04
9:39AM
-0.02
9:44PM
0.01
10:12AM
-0.05
Saturday
14
Sunday
15
Monday
16
Tuesday
17
Wednesday
18
Thursday
19
Fri
20
Sunrise-6:41--6:41--6:41--6:43--6:43--6:45--6:45-
Sunset--7:02--7:01--7:00--6:59--6:58--6:55--6:54
clear
part cloud
clear
clear
clear
clear
clear
part cloud
rain showers
thunderstorm
part cloud
thunderstorm
part cloud
clear
thunderstorm
thunderstorm
part cloud
clear
rain showers
rain showers
clear
Rain (mm)
--------11-2--21--11-
Temp. °C212224222627232523222524212223222224221919
Feels °C (?)222121192625222422212725232423222020181616
  • 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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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 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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