
Surf Forecasts:
Wainui Beach - Stockroute surf forecast from 15 Sep 2026:
- Best quality surf: Monday 21 Sep, 12AM (local time) - 8ft (2.5m), 9s period, S swell with cross-offshore winds.
- Most powerful swell: Monday 21 Sep, 3AM (local time) - 10ft (3.0m), 10s period, SSW swell with 1,815 kJ wave energy.
- Next surfable swell (1★+): Tuesday 15 Sep, 9PM (local time) - 3ft (0.9m), 10s period with SE 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 Tuesday (Sep 15) at 9PM. The primary swell is predicted to be 0.9m and 10s period with a secondary swell of 0.4m and 4s. Another secondary swell of 0.6m and 4s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Wainui Beach - Stockroute in the next 16 days are 3.0m 10s and forecast to arrive on Monday (Sep 21) at 3AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 6s period and expected on Friday (Sep 18) at 12AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Tue 15th Sep) | 3ft (0.9m) 10s |
| Best Surf | 12AM (Mon 21st Sep) | 8ft (2.5m) 9s |
| Most Powerful | 3AM (Mon 21st Sep) | 10ft (3.0m) 10s |
Table - best surf conditions forecast for Wainui Beach - Stockroute over the next 16 days.
The Lowdown
G’day, Rusty here, and we’ve got a bit of a slow burn on the menu for Wainui Beach – Stockroute over the next couple of weeks. There’s not a lot of juice to start, but if you’re patient, there’s a proper standout morning tucked away about a week from now that’s worth circling on the calendar.
First up, the early part of the week is small and clean but nothing to write home about. Tuesday the 15th kicks off with a light north breeze making for glassy lines, a 3ft SSE swell at 11 seconds, and the combined energy is a moderate 252. It’s clean, but the size is small and the crowd factor is there – it can get a bit busy, so pick your peak. The water temperature is sitting at 55°, which is a bit colder than normal for this time of year, so you’ll want a good wetsuit. Tuesday afternoon gets chopped by a NE wind, so forget that.
Wednesday morning the 16th is tiny at 3ft SE, with a light NW offshore – clean but marginal. Thursday and Friday mornings stay small and clean too, with the swell mostly under 3ft and light cross-off winds keeping things tidy. Friday the 18th does offer a nice bump in period to 12 seconds, and the combined energy hits 286, but the height is still only 3ft – clean and rideable, but you’ll be hunting for shape.
Saturday the 19th and Sunday the 20th mornings stay clean but small (2ft to 3ft, ESE period around 11-12 seconds). Sunday afternoon, though, sees a jump in swell to 7ft SSE, but the wind swings to a fresh 35 km/h southerly cross-on, turning it into a lumpy, choppy mess. Not worth it.
Now for the real standout: Monday the 21st morning. This is the one. The swell is a solid 7ft SSE at a very long 12 seconds, and the combined energy is pumping at 1166. That’s strong wave energy, proper groundswell. With a light NW offshore breeze (only 5 km/h) keeping it glassy, this is clean, powerful, and excellent surf – but only for experienced surfers. At this size, it’s too big for beginners, and that long-period SSE swell is best handled at a reef or point, so Wainui’s beach-and-reef setup will hold it well. Expect a few waves to close out on the beach sections, but there are good banks if you know where to look. Swiss and maybe a bit busy – it’s a standout morning.
Monday afternoon drops back to 5ft with an onshore ENE wind turning it a bit rough. Tuesday the 22nd morning is back to tiny clean lines (3ft SSE), and from Wednesday the 23rd through to the end of the period, it’s mostly small, messy, or just plain poor. There’s a brief moment on Thursday the 24th morning with 7ft SSE at 8 seconds, but the cross-shore wind is strong at 30-35 km/h, making it lumpy and unappealing. The last week is littered with wind against small swell, and the last days of September drop to 1.0ft – barely a ripple.
So, the call is clear: focus on Monday the 21st morning at Wainui Beach – Stockroute. That’s your best shot for a proper session. Everything else is small and clean on the edges, but nothing to get excited about. Keep an eye on the forecasts, but for now, that’s the pick.
Rusty.
Short Range ForecastLight rain (total 6mm), mostly falling on Thu night. Very mild (max 17°C on Thu morning, min 9°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummarySome drizzle, heaviest during Sun night. Very mild (max 16°C on Sat afternoon, min 7°C on Sun night). Winds increasing (calm on Sat afternoon, fresh winds from the S by Sun afternoon). | ||||||||||||||||||||
Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | SSE 11 | SE 10 | SE 9 | SE 9 | SE 9 | SE 12 | ESE 10 | ESE 10 | ESE 14 | ESE 12 | ESE 12 | ESE 12 | ESE 12 | ESE 11 | ESE 11 | ESE 11 | SSE 8 | S 9 | SSE 12 | SSE 12 | SSE 10 |
Wave Graph | |||||||||||||||||||||
242 | 196 | 128 | 103 | 81 | 199 | 125 | 81 | 79 | 193 | 177 | 123 | 119 | 138 | 183 | 101 | 547 | 1007 | 1114 | 689 | 223 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | off | off | cross-on | off | cross-off | cross-off | cross-off | cross-off | cross | off | cross-off | cross | off | cross-off | cross-on | cross-off | cross-off | cross-on | off |
High Tide | 8:56PM1.97m | 9:25AM1.96m | 9:40PM1.91m | 10:09AM1.91m | 10:25PM1.84m | 10:53AM1.85m | 11:10PM1.78m | 11:39AM1.79m | 11:56PM1.72m | 12:25PM1.75m | 00:45AM1.67m | 1:14PM1.73m | 1:39AM1.65m | ||||||||
Low Tide | 2:52PM0.48m | 3:13AM0.47m | 3:37PM0.54m | 3:56AM0.53m | 4:21PM0.61m | 4:43AM0.61m | 5:07PM0.67m | 5:30AM0.69m | 5:56PM0.73m | 6:17AM0.76m | 6:47PM0.77m | 7:06AM0.81m | 7:43PM0.79m | ||||||||
6:09 | — | — | 6:07 | — | — | 6:05 | — | — | 6:03 | — | — | 6:01 | — | — | 6:01 | — | — | 5:58 | — | — | |
— | 5:57 | — | — | 5:58 | — | — | 5:59 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | |
mm | — | — | — | — | — | — | — | — | 6 | — | — | — | — | — | — | — | — | 1 | — | — | — |
Temp °C | 13 | 14 | 12 | 14 | 15 | 11 | 17 | 16 | 13 | 12 | 12 | 10 | 15 | 16 | 15 | 16 | 13 | 11 | 14 | 15 | 12 |
Feels °C | 9 | 10 | 9 | 12 | 12 | 7 | 12 | 12 | 11 | 5 | 6 | 7 | 12 | 14 | 12 | 10 | 6 | 7 | 10 | 11 | 8 |
Swell 1 Height (m) Direction Period (s) | SSE 11 | SE 10 | SE 9 | SE 9 | SE 9 | SE 12 | ESE 10 | ESE 10 | ESE 11 | ESE 12 | ESE 12 | SSE 6 | ESE 12 | ESE 11 | ESE 11 | ESE 11 | ESE 10 | SSE 9 | SSE 12 | SSE 12 | SSE 10 |
242 | 196 | 128 | 103 | 81 | 199 | 125 | 81 | 46 | 193 | 177 | 73 | 119 | 138 | 183 | 101 | 43 | 520 | 1114 | 689 | 223 | |
Swell 2 Height (m) Direction Period (s) | E 13 | S 16 | NE 4 | ESE 13 | SE 12 | S 13 | S 14 | S 15 | ESE 14 | S 14 | S 17 | ESE 12 | SSE 6 | SSE 6 | S 9 | S 13 | NE 11 | ESE 11 | SE 10 | ESE 11 | ESE 10 |
3 | 19 | 4 | 17 | 39 | 3 | 4 | 17 | 79 | 4 | 22 | 123 | 33 | 39 | 24 | 92 | 5 | 24 | 52 | 44 | 40 | |
Swell 3 Height (m) Direction Period (s) | NE 13 | E 13 | S 15 | E 12 | S 13 | E 12 | E 12 | E 12 | SE 9 | NE 6 | NE 9 | SSE 16 | SSE 15 | SSE 15 | SSE 14 | S 18 | — | SSE 16 | — | E 13 | SE 14 |
7 | 3 | 4 | 3 | 3 | 3 | 3 | 3 | 20 | 1 | 3 | 25 | 44 | 43 | 70 | 25 | — | 24 | — | 3 | 7 | |
Wind waves Height (m) Direction Period (s) | — | NE 3 | NNE 4 | — | — | N 6 | N 2 | N 2 | NNE 6 | S 6 | SSE 6 | — | — | — | — | — | SSE 8 | S 9 | — | — | — |
— | 3 | 16 | — | — | 3 | 1 | 1 | 49 | 88 | 134 | — | — | — | — | — | 547 | 1007 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 8 | 0 | 0 | 3 | 0 | 0 | 2 | 13 | 0 | 46 | 0 | 0 | 0 | 0 | 0 | 113 | 0 | 0 | 8 | 0 |
Best forecast wave conditions in Gisborne and Mahia | |||||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||||
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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.










