
Surf Forecasts:
O'Neills Bay surf forecast from 20 Jul 2026:
- Best quality surf: Monday 20 Jul, 9PM (local time) - 4.5ft (1.4m), 14s period, SW swell with offshore winds.
- Most powerful swell: Sunday 26 Jul, 3AM (local time) - 13ft (4.0m), 16s period, WSW swell with 8,182 kJ wave energy.
- Next surfable swell (1★+): Monday 20 Jul, 9PM (local time) - 4.5ft (1.4m), 14s period with SW swell.
Best Forecast Surf Conditions for O'Neills Bay this week:
The surf forecast for O'Neills Bay over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Jul 20) at 9PM. The primary swell is predicted to be 1.4m and 14s period with a secondary swell of 0.1m and 21s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at O'Neills Bay in the next 16 days are 4.0m 16s and forecast to arrive on Sunday (Jul 26) at 3AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Monday (Jul 20) at 9PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Mon 20th Jul) | 4.5ft (1.4m) 14s |
| Best Surf | 9PM (Mon 20th Jul) | 4.5ft (1.4m) 14s |
| Most Powerful | 3AM (Sun 26th Jul) | 13ft (4.0m) 16s |
Table - best surf conditions forecast for O'Neills Bay over the next 16 days.
The Lowdown
Alright, Rusty here, let's talk about what's coming up for O'Neills Bay.
The next few weeks are a mixed bag, with a shaky start but a big, promising window opening up towards the end of the month. The water temp is sitting at 58°, which is pretty much what you'd expect for this time of year, nothing unusual there.
Our first real chance to get wet kicks off on Monday, July 20th. We've got a solid 6ft swell from the WSW, with a long 14-second period, and the combined energy is proper strong (1126). The wind is light and offshore from the NE, so expect those waves to be clean and well-shaped. This is about as good as it gets for a Monday morning. The afternoon holds up well too, with a 5ft SW swell and light offshore ENE wind. The wave energy is still full-on (997). This is the standout session of the whole outlook.
Tuesday morning, July 21st, still looks pretty good with a 4ft WSW swell, but the wind swings to a cross-offshore ESE. It'll be clean, but the energy is dropping (607). The afternoon turns into a write-off with a cross-on wind and poor conditions.
Then we hit a long, frustrating stretch. From Tuesday afternoon all the way through the end of July, the conditions are mostly blown out. We get onshore winds, cross-on winds, and a lot of rain. The swell sticks around, and by the 25th and 26th it's roaring—10ft to 13ft of WSW swell with massive energy readings (3825, 7606). That's expert territory, and with the wind being fresh and onshore, it's going to be a messy, dangerous mess. Not worth it for a paddle. This spot is a beach break, so with that much swell and strong wind, it’s looking more like a kite-surfing setup than anything else.
The first real glimmer of hope comes back on Thursday, July 30th. We have a 10ft SW swell with a very long 16-second period and a combined energy of 4388. The wind is a gentle cross-shore from the NNW, which is a huge positive. This is a big, powerful groundswell, and while the beach break might make it a bit straight, the clean conditions from the light wind could make for some epic, long-period walls. The afternoon is even better with the wind dropping to a light breeze, making it a "light cross-onshore," but still a massive 10ft, 16-second swell (4562 energy). This is the second standout, but it's still a big, powerful swell for this spot.
Friday, August 1st brings a return to cleaner conditions. The morning is a treat with a 4ft SW swell, a 14-second period, and a light, offshore breeze from the SE. The wind is clean, the energy is moderate (752), and the surf looks good. A great option for a Saturday morning session.
The week of August 4th is a monster. We're looking at a 16ft to 18ft swell from the WSW with a 15-second period. The combined energy is through the roof (11821, 14283). The wind is light and cross-shore, which is about as good as you can get for that size. But I have to be straight with you: this is way too big for O'Neills Bay. It's expert-only, and even then, it's a serious, life-threatening situation. The swell is just too much for this break. You'd be better off watching from the cliff.
So, to wrap it up: Monday, July 20th is your clear winner for clean, fun, manageable waves. Thursday, July 30th is the big, powerful standout for experienced surfers if the wind holds. The rest of the period is a waiting game, but the potential is there.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Mon afternoon. Very mild (max 14°C on Mon morning, min 9°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 30mm), heaviest during Sat night. Very mild (max 14°C on Thu morning, min 9°C on Thu night). Winds increasing (light winds from the WNW on Thu night, near gales from the WSW by Sat night). | ||||||||||||||||||||
Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | |||||||||||||||
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) | WSW 14 | SW 14 | WSW 14 | WSW 14 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 14 | SW 13 | WSW 13 | WSW 12 | NW 8 | WSW 9 | WSW 11 | WSW 12 | WSW 16 | WSW 15 | WSW 14 | WSW 14 |
Wave Graph | |||||||||||||||||||||
1126 | 988 | 710 | 607 | 509 | 431 | 297 | 147 | 116 | 456 | 721 | 546 | 255 | 427 | 819 | 1878 | 2171 | 7693 | 7606 | 5230 | 3246 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-off | cross-off | cross-on | cross-on | cross-on | on | on | on | on | cross-on | cross-off | cross-on | on | on | cross-on | on | on | cross-on | cross-on |
High Tide | 1:49PM2.50m | 2:08AM2.54m | 2:39PM2.37m | 2:57AM2.35m | 3:34PM2.25m | 3:53AM2.20m | 4:36PM2.17m | 4:58AM2.11m | 5:43PM2.16m | 6:05AM2.10m | 6:46PM2.21m | 7:06AM2.15m | 7:40PM2.32m | ||||||||
Low Tide | 8:02PM0.46m | 8:32AM0.46m | 8:53PM0.64m | 9:23AM0.61m | 9:50PM0.79m | 10:19AM0.73m | 10:53PM0.88m | 11:20AM0.79m | 11:59PM0.90m | 12:22PM0.78m | 1:00AM0.85m | 1:19PM0.71m | 1:53AM0.75m | ||||||||
7:28 | — | — | 7:28 | — | — | 7:28 | — | — | 7:28 | — | — | 7:26 | — | — | 7:26 | — | — | 7:24 | — | — | |
— | 5:27 | — | — | 5:28 | — | — | 5:28 | — | — | 5:29 | — | — | 5:30 | — | — | 5:30 | — | — | 5:30 | — | |
mm | — | 3 | 1 | — | — | — | — | — | — | 2 | — | — | 3 | 6 | 6 | — | 2 | 11 | 3 | 2 | 2 |
Temp °C | 14 | 14 | 11 | 10 | 12 | 13 | 13 | 13 | 13 | 14 | 14 | 13 | 12 | 13 | 13 | 13 | 13 | 13 | 11 | 11 | 10 |
Feels °C | 12 | 12 | 7 | 7 | 9 | 10 | 9 | 9 | 9 | 11 | 10 | 10 | 8 | 8 | 8 | 6 | 6 | 6 | 2 | 4 | 4 |
Swell 1 Height (m) Direction Period (s) | WSW 14 | SW 14 | WSW 14 | WSW 14 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 14 | SW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 18 | WSW 15 | WSW 12 | — | — | WSW 14 | — |
1126 | 988 | 710 | 607 | 509 | 431 | 297 | 147 | 116 | 456 | 721 | 546 | 255 | 230 | 121 | 656 | 2171 | — | — | 5230 | — | |
Swell 2 Height (m) Direction Period (s) | — | W 22 | — | — | — | SW 18 | WSW 16 | WSW 16 | WSW 15 | — | — | — | — | — | — | — | WSW 15 | — | — | — | — |
— | 9 | — | — | — | 13 | 26 | 51 | 84 | — | — | — | — | — | — | — | 1654 | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | E 3 | ESE 6 | — | SSW 4 | SW 4 | SW 7 | SSW 7 | SW 6 | — | NW 3 | NW 5 | NW 8 | WSW 9 | WSW 11 | — | WSW 16 | WSW 15 | — | WSW 14 |
— | — | 3 | 4 | — | 4 | 7 | 65 | 83 | 36 | — | 2 | 65 | 427 | 819 | 1878 | — | 7693 | 7606 | — | 3246 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 1 | 0 | 8 | 8 | 119 | 158 | 109 | 49 | 223 | 303 | 333 | 333 | 78 | 130 | 333 | 149 | 384 | 244 | 39 |
Best forecast wave conditions in Auckland | |||||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
Information about the O'Neills Bay Surf forecast
The above surf forecast table for O'Neills Bay provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at O'Neills Bay can be found by selecting the local surf guide option on the grey menu. Our O'Neills Bay 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 (O'Neills Bay) 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 O'Neills Bay 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.
O'Neills Bay is 10 km (6 miles) from the city of Waitakere. If you plan a holiday in Auckland, look for hotels and other accommodation in Waitakere. Waitakere has rooms for a wide range of budgets as well as car hire and transport links.










