Onemana Surf Break

Lat Long: 37.15° S 175.88° E

Onemana 48 hour detailed Surf Forecast

Issued: 5 am 19 Jul 2026 (local time)

Forecast update in  hr  min

Today's Onemana sea temperature is
14.8° 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 (19 Jul):

  • Morning surf: Morning surf (19 Jul, local time) - 1ft (0.3m), 13s period with ESE swell.
  • Afternoon surf: Afternoon surf (19 Jul, local time) - 1ft (0.3m), 13s period with ESE swell.
  • Evening surf: Evening surf (19 Jul, local time) - 1ft (0.3m), 13s period with ESE swell.

The current surf forecast for Onemana at 12PM is: 0.3m 13s primary swell from a East-southeast direction and 0.1m 9s secondary swell from a Northeast direction (forecast issued at 05:00am July 19). An open ocean swell of 0.2m 2s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (NZST) & DateWave HeightWave Period
Morning (19 Jul)1ft (0.3m)13s
Afternoon (19 Jul)1ft (0.3m)13s
Evening (19 Jul)1ft (0.3m)13s

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


Short Range Forecast

Heavy rain (total 29mm), heaviest during Mon afternoon. Very mild (max 15°C on Sun afternoon, min 8°C on Tue night). Wind will be generally light.

Sunday
19
Monday
20
Tuesday
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)
0
0
0
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)
0.3
ESE
14
0.3
ESE
14
0.3
ESE
13
0.3
ESE
13
0.3
ESE
13
0.3
ESE
13
0.3
ESE
13
0.3
ESE
12
0.3
ESE
12
0.3
ESE
12
0.3
ESE
12
0.3
ESE
12
0.3
ESE
12
0.9
ENE
6
1.1
E
6
1
E
6
1
E
6
0.9
E
5
0.8
E
5
0.7
E
5
0.6
E
5
0.5
E
5
0.2
ESE
11
Wave Graph
Metric surfscale
Energy kJ
39
38
34
34
34
34
33
30
29
29
29
28
28
60
100
71
64
47
33
25
17
12
12
Wind (km/h)
15
WSW
15
WSW
15
WSW
20
WSW
15
SW
15
SW
10
WSW
10
SSW
15
SSE
10
SE
5
NE
15
ESE
15
ESE
10
SSE
15
SE
15
SE
15
SE
10
SSE
10
SSE
5
SE
0
E
5
W
10
W
Wind State
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
cross-off
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross-on
cross-on
cross-on
cross-on
cross
cross-on
glassy
off
off
High Tide
10:25AM1.79m
10:49PM1.91m
11:17AM1.74m
11:38PM1.82m
12:09PM1.68m
Low Tide
4:21AM0.09m
4:36PM0.11m
5:11AM0.12m
5:26PM0.21m
5:59AM0.18m
6:16PM0.30m
clear
clear
clear
clear
part cloud
clear
clear
clear
part cloud
part cloud
cloud
light rain
light rain
heavy rain
light rain
light rain
part cloud
clear
clear
clear
clear
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:24
7:24
7:24
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:20
5:21
5:21
 mm
3
5
15
4
2
Temp °C
10
10
11
14
15
12
11
11
11
12
12
12
11
10
10
11
10
9
9
12
12
10
9
Feels °C
6
6
7
10
11
8
9
9
8
10
10
9
9
8
7
8
7
6
6
10
10
8
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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