Wainui Beach - Stockroute Surf Break

Lat Long: 38.69° S 178.08° E

Wainui Beach - Stockroute Surf Forecast and Surf Report

Issued: 5 am 21 Aug 2026 (local time)

Forecast update in  hr  min

Today's Wainui Beach - Stockroute sea temperature is
12.9° C
1.1° 

Wainui Beach - Stockroute surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Wainui Beach - Stockroute surf forecast from 20 Aug 2026:

  • Best quality surf: Monday 24 Aug, 9PM (local time) - 5ft (1.6m), 14s period, SSE swell with cross-offshore winds.
  • Most powerful swell: Friday 28 Aug, 12AM (local time) - 5ft (1.6m), 17s period, SSE swell with 1,405 kJ wave energy.
  • Next surfable swell (1★+): Friday 21 Aug, 12PM (local time) - 4ft (1.2m), 16s period with SSE swell.

Best Forecast Surf Conditions for Wainui Beach - Stockroute this week:

The surf forecast for Wainui Beach - Stockroute over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Aug 21) at 12PM. The primary swell is predicted to be 1.2m and 16s period with a secondary swell of 0.8m and 10s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Wainui Beach - Stockroute in the next 16 days are 1.6m 17s and forecast to arrive on Friday (Aug 28) at 12AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Tuesday (Aug 25) at 3AM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+)12PM (Fri 21st Aug)4ft (1.2m) 16s
Best Surf 9PM (Mon 24th Aug)5ft (1.6m) 14s
Most Powerful12AM (Fri 28th Aug)5ft (1.6m) 17s

Table - best surf conditions forecast for Wainui Beach - Stockroute over the next 16 days.


The Lowdown

G’day, Rusty here. Looks like we’ve got a bit of a slow start, but there’s some solid surf on the radar for Wainui Beach – Stockroute (Gisborne). This is an exposed beach and reef setup that handles a SSE swell best, and it’s a consistent, advanced-level break. The water’s sitting at 55°F right now, which is a bit colder than normal for this time of year – you’ll want a decent steamer.

The first real window opens Friday morning, 21 August. We’ve got a clean 2ft SSE swell with a 16-second period – that’s proper groundswell energy, and it’s carrying moderate wave energy (460). The wind is light offshore from the NW, so it’ll be glassy and well-shaped. That’s a great start for the advanced crew, though the long period means it’ll stand up nicely on the reef but might close out a bit on the beach sections.

Saturday morning, 22 August, keeps the good vibes going with a gentle offshore breeze and a 3ft SSE swell, period dropping to 12 seconds. Still clean, still fun. The energy’s moderate (264). Wednesday morning, 26 August, has a moderate offshore – 2ft SSE swell with a 15-second period, but it’s smaller, so more of a background session.

Now, the standout – and I mean the real one – is Friday morning, 28 August. That’s a week out, so keep an eye on it, but the signs are strong. We’re looking at a 4ft SSE swell, 14-second period, with a cross-offshore breeze from the NNW. The combined energy is solid (590), and it’s forecast for very good surf. This is the pick of the bunch – decent size, long period, and clean. It’s not too big for experienced surfers, but it’s pushing into that territory where beginners might struggle.

Saturday morning, 29 August, gets messy with a strong cross-shore wind – avoid that. But then Tuesday morning, 1 September, shapes up again with a 3ft SSE swell, 14-second period, light cross-offshore breeze, and good energy (390). That’s another solid session.

Then Wednesday afternoon, 2 September, is a late highlight – 3ft SSE swell, 16-second period, clean cross-offshore breeze, and strong energy (548). That’s a beauty.

After that, things taper off. Thursday, 3 September, has a 5ft S swell but it’s short period (7 seconds) and the wind is messy – that’s more for the guys on kites if anything. The rest of the first week of September is small and ordinary.

So, bottom line: Friday morning 28 August is the standout. Tuesday morning 1 September and Wednesday afternoon 2 September are solid runners-up. Get out there when it’s clean.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 16°C on Sat afternoon, min 7°C on Fri night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Very mild (max 19°C on Wed afternoon, min 8°C on Mon night). Wind will be generally light.

Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
2
2
2
1
1
0
0
1
1
1
3
2
1
1
1
1
1
1
3
4
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
SSE
16
1.1
SSE
16
0.9
SSE
13
0.9
SSE
12
0.8
SSE
12
0.7
SSE
11
0.5
SE
11
0.4
SE
10
0.3
ESE
13
0.6
SSE
9
0.8
SSE
16
1.4
SSE
13
1
SSE
12
0.8
SSE
12
0.4
SSE
15
0.5
SSE
15
0.5
S
17
0.5
S
15
0.6
SSE
15
0.9
SSE
17
1.6
SSE
17
Wave Graph
Metric surfscale
Energy kJ
211
568
242
230
156
105
55
33
33
59
359
673
260
150
72
125
153
112
167
516
1405
Wind (km/h)
10
NW
10
ENE
15
NNW
20
NW
5
WNW
25
NW
25
NW
25
NW
20
WNW
15
WSW
15
ESE
15
NNW
10
WNW
10
ENE
15
NW
20
NW
10
WNW
20
NW
15
WNW
5
ESE
10
NNW
Wind State
off
cross-on
cross-off
off
off
off
cross-off
cross-off
off
cross-off
on
cross-off
off
cross-on
off
off
off
off
off
on
cross-off
High Tide
12:17PM1.84m
00:30AM1.79m
1:01PM1.78m
1:14AM1.71m
1:46PM1.73m
2:05AM1.65m
2:36PM1.70m
3:08AM1.63m
3:41PM1.69m
4:20AM1.65m
4:58PM1.73m
5:17AM1.71m
5:51PM1.81m
Low Tide
6:28PM0.72m
6:53AM0.69m
7:17PM0.77m
7:38AM0.75m
8:09PM0.81m
8:27AM0.80m
9:07PM0.83m
9:27AM0.82m
10:10PM0.83m
10:32AM0.78m
11:11PM0.79m
11:26AM0.72m
00:02AM0.73m
clear
clear
clear
clear
clear
clear
part cloud
part 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>
6:46
6:45
6:43
6:41
6:41
6:39
6:37
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:35
5:36
5:37
5:37
5:38
5:39
5:40
 mm
Temp °C
12
12
10
15
16
12
15
15
12
13
12
10
14
15
12
17
19
13
15
14
11
Feels °C
10
8
7
12
13
7
9
11
7
9
7
6
12
11
9
15
16
9
12
12
9
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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Information about the Wainui Beach - Stockroute Surf forecast

The above surf forecast table for Wainui Beach - Stockroute provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Wainui Beach - Stockroute can be found by selecting the local surf guide option on the grey menu. Our Wainui Beach - Stockroute surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Wainui Beach - Stockroute) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Wainui Beach - Stockroute may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Are you planning a holiday in Gisborne and Mahia? If you are looking for accommodation near Wainui Beach - Stockroute, camping, hotels and holiday cottages in Gisborne and Mahia, consider staying in Gisborne which is 9 km (6 miles) away.

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