Surf Forecasts:
O'Neills Bay surf forecast from 11 Jul 2026:
- Best quality surf: Saturday 11 Jul, 6PM (local time) - 3.5ft (1.1m), 18s period, SW swell with cross-offshore winds.
- Most powerful swell: Wednesday 15 Jul, 6PM (local time) - 8ft (2.4m), 16s period, WSW swell with 2,872 kJ wave energy.
- Next surfable swell (1★+): Saturday 11 Jul, 6PM (local time) - 3.5ft (1.1m), 18s 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 Saturday (Jul 11) at 6PM. The primary swell is predicted to be 1.1m and 18s period with a secondary swell of 1.3m and 14s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at O'Neills Bay in the next 16 days are 2.4m 16s and forecast to arrive on Wednesday (Jul 15) at 6PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 4s period and expected on Monday (Jul 13) at 12PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Sat 11th Jul) | 3.5ft (1.1m) 18s |
| Best Surf | 6PM (Sat 11th Jul) | 3.5ft (1.1m) 18s |
| Most Powerful | 6PM (Wed 15th Jul) | 8ft (2.4m) 16s |
Table - best surf conditions forecast for O'Neills Bay over the next 16 days.
Alright, let's talk this out in the old units. Rusty here again.
This run at O'Neills Bay is a classic winter storm track. Big, long-period groundswell from the southwest, but we've got to sit through a few days of rough northwesterlies to get to the real gems.
We kick off on Saturday, 11th July, with waves around 4 to 5 feet from the southwest on a very long 15-second period. That's a lot of water moving (1290 energy). The wind is a light cross-off from the southeast at 6 mph, making it clean. For the experienced guys, this is a solid start.
Sunday the 12th is your first serious option. The swell holds at about 6 feet from the west-southwest, still with a very long period. The real treat is the wind: it's glassy on the Sunday morning, and offshore from the east-northeast at 3 mph in the afternoon. This is the kind of clean, lined-up swell that makes a West Coast winter worthwhile.
Monday the 13th stays clean with waves dropping to about 4 feet.
We have a bit of a gap through the middle of the week, but then Thursday the 16th morning shows up with a bigger pulse. Swell hits 7 feet from the WSW, and the wind goes glassy again. This is big, clean, and powerful, only for the experienced crew.
We lose a few days to strong southwesterly onshore winds on the 17th and 18th, turning the lineup into a washing machine.
But the absolute standout of the whole run hits on Sunday, 19th July. This is the one. The swell jumps to a solid 10 feet from the SW, riding a huge 17-second period. The combined energy is a massive 4386. And the wind? Clean offshore from the east-northeast at just 3 mph. This is a perfect, big-wave, expert-only session. It's going to be a clean, heaving wall of water.
After that, the swell drops back to around 5 feet for Monday the 20th, with clean east winds. The end of the run goes small and weak from the 22nd to the 24th, with wave energy dropping way off.
So, for the best sessions: the glassy Sunday the 12th is a cracker, the glassy Thursday the 16th is a big one, and the Sunday the 19th is the absolute champion of the forecast. If you can get out that Sunday, drop everything.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Mon night. Very mild (max 15°C on Mon afternoon, min 8°C on Sat morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 15°C on Tue morning, min 12°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | |||||||||||||||
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) | SW 15 | WSW 14 | SW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 14 | WSW 14 | SW 13 | WNW 8 | SW 20 | W 13 | WSW 18 | WSW 16 | WSW 15 | WSW 15 | WSW 16 | WSW 15 | WSW 14 | WSW 14 | WSW 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 967 | 691 | 1486 | 1356 | 1083 | 807 | 553 | 390 | 183 | 165 | 110 | 466 | 980 | 2663 | 2560 | 2237 | 1828 | 1393 | 1244 | 1095 | 1005 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | off | off | glassy | off | off | cross-off | cross-off | cross | cross-on | cross | cross-off | cross-on | cross-off | glassy | cross-on | cross-on | cross-on | on | on |
High Tide | 6:39PM2.54m | 7:04AM2.52m | 7:42PM2.69m | 8:06AM2.64m | 8:39PM2.86m | 9:03AM2.75m | 9:32PM2.99m | 9:54AM2.82m | 10:21PM3.08m | 10:43AM2.85m | 11:08PM3.09m | 11:31AM2.83m | 11:53PM3.03m | ||||||||
Low Tide | 12:18PM0.41m | 00:54AM0.48m | 1:21PM0.31m | 1:57AM0.33m | 2:20PM0.18m | 2:55AM0.19m | 3:14PM0.07m | 3:48AM0.07m | 4:05PM-0.01m | 4:39AM0.00m | 4:54PM-0.03m | 5:27AM-0.01m | 5:41PM0.01m | ||||||||
 | |  | | | | | |  | | | | | |  |  | | | | | | |
 | 7:33 | — | — | 7:33 | — | — | 7:33 | — | — | 7:31 | — | — | 7:31 | — | — | 7:31 | — | — | 7:31 | — | — |
 | — | 5:21 | — | — | 5:22 | — | — | 5:22 | — | — | 5:22 | — | — | 5:23 | — | — | 5:23 | — | — | 5:24 | — |
mm | — | — | — | — | — | — | — | — | 4 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 11 | 12 | 9 | 12 | 13 | 11 | 14 | 15 | 12 | 15 | 15 | 14 | 14 | 15 | 14 | 15 | 15 | 13 | 13 | 14 | 14 |
Feels °C | 8 | 9 | 6 | 10 | 11 | 8 | 10 | 12 | 9 | 13 | 13 | 13 | 12 | 13 | 12 | 14 | 13 | 11 | 10 | 10 | 10 |
Swell 1 Height (m) Direction Period (s) | SW 15 | WSW 14 | SW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 14 | WSW 14 | SW 13 | WNW 8 | WNW 8 | W 13 | W 12 | WSW 16 | WSW 15 | WSW 15 | WSW 16 | WSW 15 | WSW 14 | WSW 14 | WSW 14 |
| kJ | 967 | 691 | 1486 | 1356 | 1083 | 807 | 553 | 390 | 183 | 165 | 110 | 466 | 556 | 2663 | 2560 | 2237 | 1828 | 1393 | 1244 | 1095 | 1005 |
Swell 2 Height (m) Direction Period (s) | SW 20 | SW 18 | — | — | — | — | — | — | — | WSW 13 | WSW 13 | SW 18 | WSW 18 | — | — | — | — | — | — | — | SW 21 |
| kJ | 306 | 455 | — | — | — | — | — | — | — | 120 | 108 | 157 | 980 | — | — | — | — | — | — | — | 18 |
Swell 3 Height (m) Direction Period (s) | S 6 | S 6 | — | — | — | — | — | — | — | SW 22 | SW 20 | WSW 23 | — | — | — | — | — | — | — | — | — |
| kJ | 17 | 18 | — | — | — | — | — | — | — | 19 | 104 | 53 | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | N 3 | NNW 4 | NW 6 | — | — | NW 3 | NNW 7 | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | 2 | 6 | 61 | — | — | 2 | 4 | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 7 | 0 | 0 | 0 | 0 | 0 | 0 | 39 | 67 | 67 | 113 | 0 | 179 | 0 | 0 | 119 | 8 | 39 | 67 | 39 |
Best forecast wave conditions in Auckland | |||||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||||
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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.
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