Onemana Surf Break

Lat Long: 37.15° S 175.88° E

Onemana 48 hour detailed Surf Forecast

Issued: 6 pm 17 Oct 2026 (local time)

Forecast update in  hr  min

Today's Onemana sea temperature is
16.5°C
1.2° 

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 (18 Oct):

  • Morning surf: Morning surf (18 Oct, local time) - 2ft (0.6m), 5s period with SE swell.
  • Afternoon surf: Afternoon surf (18 Oct, local time) - 0.5ft (0.2m), 16s period with N swell.
  • Evening surf: Evening surf (18 Oct, local time) - 0.5ft (0.2m), 10s period with ENE swell.

The current surf forecast for Onemana at 3AM is: 0.2m 10s primary swell from a East-northeast direction and 0.4m 5s secondary swell from a East-southeast direction (forecast issued at 06:00pm October 17). The wind direction is predicted to be cross-offshore.

Time (NZDT) & DateWave HeightWave Period
Morning (18 Oct)2ft (0.6m)5s
Afternoon (18 Oct)0.5ft (0.2m)16s
Evening (18 Oct)0.5ft (0.2m)10s

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


Short Range Forecast

Mostly dry. Very mild (max 19°C on Mon afternoon, min 7°C on Sat night). Wind will be generally light.

Sat
17
Sunday
18
Monday
19
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
Rating
(10 max)
1
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)
0.6
SE
5
0.6
ESE
5
0.5
ESE
5
0.2
ENE
11
0.5
E
5
0.5
ESE
6
0.5
ESE
6
0.5
ESE
5
0.2
N
16
0.2
ENE
10
0.2
ENE
10
0.2
ENE
10
0.2
ENE
10
0.2
ENE
11
0.2
ENE
11
0.2
ENE
11
0.2
ENE
11
0.2
N
14
0.2
ENE
11
Wave Graph
Metric surfscale
Energy kJ
19
17
15
12
14
18
22
15
20
10
10
10
10
11
11
12
11
16
11
Wind (km/h)
5
SSE
10
NNW
10
WNW
10
WSW
10
SW
10
SW
5
S
5
NE
10
N
15
NNW
5
W
10
SW
10
SW
10
SW
5
SW
5
N
10
N
10
NW
15
WSW
Wind State
glassy
cross-off
off
cross-off
cross-off
cross-off
glassy
cross-on
cross
cross-off
off
cross-off
cross-off
cross-off
glassy
cross
cross
cross-off
off
High Tide
00:22AM1.53m
12:55PM1.58m
1:10AM1.47m
1:45PM1.54m
Low Tide
6:37AM0.39m
7:10PM0.49m
7:25AM0.44m
8:01PM0.53m
clear
clear
clear
clear
clear
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>
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6:28
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6:26
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<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
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7:34
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7:35
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7:35
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 mm
—
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Temp °C
15
14
11
9
8
7
11
15
16
15
12
11
10
10
13
17
19
17
12
Feels °C
13
11
9
6
5
4
9
13
13
12
10
9
8
8
12
15
17
15
10
  • 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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