Onemana Surf Break

Lat Long: 37.15° S 175.88° E

Onemana 48 hour detailed Surf Forecast

Issued: 5 am 19 Sep 2026 (local time)

Forecast update in  hr  min

Today's Onemana sea temperature is
15.2°C
0.5° 

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 (19 Sep):

  • Morning surf: Morning surf (19 Sep, local time) - 4ft (1.2m), 8s period with NE swell.
  • Afternoon surf: Afternoon surf (19 Sep, local time) - 3ft (0.9m), 8s period with NNE swell.
  • Evening surf: Evening surf (19 Sep, local time) - 2.5ft (0.7m), 8s period with NE swell.

The current surf forecast for Onemana at 9AM is: 1.2m 8s primary swell from a Northeast direction and 0.1m 12s secondary swell from a East direction (forecast issued at 05:00am September 19). The wind direction is predicted to be offshore.

Time (NZST) & DateWave HeightWave Period
Morning (19 Sep)4ft (1.2m)8s
Afternoon (19 Sep)3ft (0.9m)8s
Evening (19 Sep)2.5ft (0.7m)8s

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


Short Range Forecast

Mostly dry. Very mild (max 17°C on Sat morning, min 8°C on Sun night). Mainly fresh winds.

Saturday
19
Sunday
20
Monday
21
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
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
Rating
(10 max)
1
1
1
0
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
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.4
NNE
8
1.3
NNE
8
1.2
NE
8
1
NNE
8
0.9
NNE
8
0.7
NE
8
0.7
NE
8
0.6
NE
8
0.5
NE
8
0.4
NE
8
0.4
NE
9
0.4
NE
9
0.3
NNW
7
0.2
ENE
9
0.2
ENE
9
0.2
ENE
9
0.2
E
10
0.3
ENE
9
0.2
ENE
9
0.2
ENE
9
0.2
ENE
9
0.2
ENE
10
0.2
ENE
10
Wave Graph
Metric surfscale
Energy kJ
224
213
182
137
108
67
58
36
30
21
20
24
11
8
8
9
7
16
8
8
8
9
9
Wind (km/h)
15
WSW
20
WSW
20
WSW
25
WSW
30
WSW
30
WSW
25
W
30
W
25
W
30
W
30
WSW
30
SW
30
WSW
30
SW
25
SW
20
WSW
15
WSW
15
WSW
15
WSW
20
WSW
20
WSW
25
WSW
20
WSW
Wind State
off
off
off
cross-off
cross-off
off
off
off
off
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
off
off
off
off
High Tide
12:32PM1.57m
00:46AM1.49m
1:24PM1.52m
1:40AM1.44m
2:20PM1.49m
Low Tide
6:13AM0.38m
6:43PM0.50m
7:02AM0.44m
7:35PM0.55m
7:55AM0.47m
8:31PM0.57m
cloud
clear
clear
clear
clear
cloud
cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:11
6:09
6:07
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:09
6:09
6:10
 mm
Temp °C
11
11
13
17
16
13
14
14
14
14
14
14
15
12
10
9
8
8
12
14
16
12
11
Feels °C
8
7
9
12
10
7
9
9
9
8
7
7
8
5
4
4
4
4
9
10
11
7
6
  • 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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