Onemana Surf Break

Lat Long: 37.15° S 175.88° E

Onemana 48 hour detailed Surf Forecast

Issued: 11 am 22 Aug 2026 (local time)

Forecast update in  hr  min

Today's Onemana sea temperature is
14.5° C
0.1° 

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 (22 Aug):

  • Morning surf: Morning surf (22 Aug, local time) - 0.5ft (0.2m), 8s period with E swell.
  • Afternoon surf: Afternoon surf (22 Aug, local time) - 0.5ft (0.1m), 14s period with NE swell.
  • Evening surf: Evening surf (22 Aug, local time) - 0.5ft (0.1m), 14s period with NE swell.

The current surf forecast for Onemana at 4PM is: 0.1m 14s primary swell from a Northeast direction and 0.1m 9s secondary swell from a East direction (forecast issued at 11:00am August 22). An open ocean swell of 0.3m 4s is not directed at the surf break. The wind direction is predicted to be offshore.

Time (NZST) & DateWave HeightWave Period
Morning (22 Aug)0.5ft (0.2m)8s
Afternoon (22 Aug)0.5ft (0.1m)14s
Evening (22 Aug)0.5ft (0.1m)14s

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


Short Range Forecast

Light rain (total 3mm), mostly falling on Sun afternoon. Very mild (max 16°C on Mon afternoon, min 9°C on Sat night). Mainly fresh winds.

Sat
22
Sunday
23
Monday
24
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)
0
0
0
0
0
0
0
0
0
0
0
0
1
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
Wave
Height (m)
Direction
Period (s)
0.2
E
8
0.2
E
8
0.1
NE
14
0.1
NE
14
0.1
E
14
0.1
NE
14
0.1
NE
14
0.2
E
13
0.2
E
12
0.2
E
12
0.2
E
12
0.2
E
13
0.9
NNW
6
0.7
NNW
6
0.6
NNW
6
0.4
NNW
6
0.3
NNW
6
0.3
NNW
5
0.1
E
12
0.1
E
12
0.1
E
12
Wave Graph
Metric surfscale
Energy kJ
6
8
8
8
8
8
8
13
12
12
12
13
66
41
31
12
6
6
5
3
5
Wind (km/h)
10
W
15
W
15
W
15
WNW
15
WNW
10
WNW
10
WNW
15
NW
20
NW
25
NW
30
WNW
15
W
15
WSW
20
WSW
15
WSW
15
WSW
15
WSW
15
SW
15
WSW
20
WSW
10
WSW
Wind State
off
off
off
off
off
cross-off
cross-off
cross-off
cross-off
cross-off
off
off
off
off
off
off
cross-off
cross-off
cross-off
cross-off
off
High Tide
2:05PM1.52m
2:19AM1.47m
3:00PM1.50m
3:14AM1.46m
3:55PM1.51m
Low Tide
7:42AM0.41m
8:11PM0.55m
8:34AM0.45m
9:06PM0.57m
9:28AM0.45m
cloud
clear
clear
part cloud
clear
clear
clear
clear
cloud
clear
light rain
rain showers
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:52
6:50
6:48
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:46
5:47
5:49
 mm
1
2
Temp °C
13
14
15
13
11
10
9
9
12
15
14
13
11
10
10
10
11
15
16
12
10
Feels °C
10
10
11
9
8
7
6
6
8
10
9
10
7
6
6
7
8
11
12
8
8
  • 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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