Onemana Surf Break

Lat Long: 37.15° S 175.88° E

Onemana 48 hour detailed Surf Forecast

Issued: 11 pm 31 Aug 2026 (local time)

Forecast update in  hr  min

Today's Onemana sea temperature is
14.7°C
0.2° 

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 (01 Sep):

  • Morning surf: Morning surf (01 Sep, local time) - 1.5ft (0.5m), 10s period with NE swell.
  • Afternoon surf: Afternoon surf (01 Sep, local time) - 1.5ft (0.5m), 10s period with NE swell.
  • Evening surf: Evening surf (01 Sep, local time) - 1.5ft (0.4m), 10s period with NE swell.

The current surf forecast for Onemana at 5AM is: 0.5m 10s primary swell from a Northeast direction and 0.3m 5s secondary swell from a Northwest direction (forecast issued at 11:00pm August 31). An open ocean swell of 0.5m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (NZST) & DateWave HeightWave Period
Morning (01 Sep)1.5ft (0.5m)10s
Afternoon (01 Sep)1.5ft (0.5m)10s
Evening (01 Sep)1.5ft (0.4m)10s

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


Short Range Forecast

Mostly dry. Very mild (max 18°C on Thu afternoon, min 10°C on Tue night). Mainly fresh winds.

Tuesday
1
Wednesday
2
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
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.4
NE
10
0.5
NE
10
0.5
NE
10
0.5
NE
10
0.5
NE
10
0.5
NE
10
0.5
NE
10
0.4
NE
10
0.4
NE
10
0.4
NE
9
0.4
NE
9
0.4
NE
9
0.4
NE
9
0.4
NE
9
0.3
NE
9
0.3
NE
9
0.3
NE
9
Wave Graph
Metric surfscale
Energy kJ
35
49
51
49
48
46
45
23
23
23
22
22
21
21
12
12
12
Wind (km/h)
30
WSW
30
WSW
25
WSW
25
WSW
25
WSW
25
WSW
25
WSW
25
WSW
20
WSW
25
WSW
20
W
20
WSW
20
W
20
WSW
20
WSW
20
W
15
W
Wind State
off
off
off
cross-off
cross-off
cross-off
cross-off
cross-off
off
off
off
off
off
off
off
off
off
High Tide
9:00PM1.82m
9:25AM1.75m
9:42PM1.82m
10:10AM1.76m
Low Tide
3:21AM0.16m
3:37PM0.22m
4:04AM0.15m
4:23PM0.24m
part cloud
clear
cloud
cloud
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>
6:37
6:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:54
5:55
 mm
Temp °C
13
12
12
12
12
14
14
12
10
11
11
11
13
16
17
13
12
Feels °C
7
6
6
6
5
8
8
6
5
6
7
7
8
11
13
9
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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