Onemana Surf Break

Lat Long: 37.15° S 175.88° E

Onemana 48 hour detailed Surf Forecast

Issued: 5 pm 13 Sep 2026 (local time)

Forecast update in  hr  min

Today's Onemana sea temperature is
15.0°C
0.4° 

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


How big are the waves at Onemana today (13 Sep):

  • Afternoon surf: Afternoon surf (13 Sep, local time) - 1ft (0.3m), 13s period with NE swell.
  • Evening surf: Evening surf (13 Sep, local time) - 1ft (0.3m), 13s period with NE swell.

The current surf forecast for Onemana at 9PM is: 0.3m 13s primary swell from a Northeast direction and 0.2m 8s secondary swell from a East-northeast direction (forecast issued at 05:00pm September 13). An open ocean swell of 0.2m 3s is not directed at the surf break. The wind direction is predicted to be offshore.

Time (NZST) & DateWave HeightWave Period
Morning (13 Sep)--
Afternoon (13 Sep)1ft (0.3m)13s
Evening (13 Sep)1ft (0.3m)13s

Table - waves today at Onemana. (Swell directed towards the surf break)


Short Range Forecast

Mostly dry. Very mild (max 17°C on Sun afternoon, min 8°C on Tue night). Wind will be generally light.

Sun
13
Monday
14
Tuesday
15
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.3
NE
13
0.3
NE
13
0.3
NE
13
0.3
NE
13
0.3
NE
12
0.3
NE
12
0.3
NE
12
0.3
NE
12
0.3
NE
12
0.3
NE
12
0.3
NE
12
0.3
NE
12
0.2
ENE
14
0.3
NE
12
0.3
NE
11
0.2
ENE
13
0.3
NE
11
0.3
NE
11
0.2
ENE
13
Wave Graph
Metric surfscale
Energy kJ
27
27
26
25
24
23
23
23
23
23
23
23
18
21
20
18
20
20
17
Wind (km/h)
20
SW
15
WSW
15
WSW
10
WSW
10
WSW
10
WSW
10
SW
10
WSW
15
SW
15
WSW
15
WSW
15
WSW
10
WSW
10
SW
5
SSW
5
ESE
5
NE
5
NNW
10
WSW
Wind State
cross-off
cross-off
off
cross-off
off
cross-off
cross-off
cross-off
cross-off
cross-off
off
cross-off
cross-off
cross-off
cross-off
on
glassy
glassy
off
High Tide
8:18PM1.89m
8:45AM1.83m
9:02PM1.85m
9:29AM1.81m
Low Tide
2:37AM0.08m
2:56PM0.16m
3:20AM0.11m
3:41PM0.22m
clear
clear
clear
clear
clear
part cloud
clear
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:18
6:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:05
6:05
6:06
 mm
Temp °C
17
13
11
11
11
11
12
15
17
15
10
10
9
9
12
15
15
14
11
Feels °C
12
9
8
9
9
9
9
12
14
12
6
7
6
7
10
13
14
13
9
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 

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 Onemana 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.


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