
Surf Forecasts:
O'Neills Bay surf forecast from 1 Aug 2026:
- Best quality surf: Wednesday 5 Aug, 3AM (local time) - 6ft (1.9m), 14s period, SW swell with cross-offshore winds.
- Most powerful swell: Tuesday 4 Aug, 9AM (local time) - 8ft (2.4m), 16s period, SW swell with 2,985 kJ wave energy.
- Next surfable swell (1★+): Sunday 2 Aug, 12AM (local time) - 6ft (1.9m), 12s 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 Sunday (Aug 02) at 12AM. The primary swell is predicted to be 1.9m and 12s period with a secondary swell of 0.1m and 22s. 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 Tuesday (Aug 04) at 9AM. Winds are predicted to be cross-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 Thursday (Aug 06) at 12AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Sun 2nd Aug) | 6ft (1.9m) 12s |
| Best Surf | 3AM (Wed 5th Aug) | 6ft (1.9m) 14s |
| Most Powerful | 9AM (Tue 4th Aug) | 8ft (2.4m) 16s |
Table - best surf conditions forecast for O'Neills Bay over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a look at what’s shaking in the water for the next couple of weeks.
The main swell window is from the southwest, and it’s gonna be a bit of a mixed bag. We’ve got a solid run of decent waves, but plenty of wind to deal with along the way. O’Neills Bay is the spot that’s consistent, and it’s where all the action is happening.
Right now, the water’s sitting at 58°, which is basically normal for this time of year. No cold snaps or warm patches to worry about.
Get your eyes on Saturday afternoon, August 1st. This is your standout. O’Neills Bay is seeing a solid 8 ft of swell pumping in from the west-southwest, with a 13-second period. The wave energy is pumping hard at 2064, and with a light easterly cross-offshore wind, it’s going to be clean. This is excellent surf, but it’s advanced territory at that size. Expect the place to be pretty busy, as it often is when it’s good.
Sunday morning, August 2nd, the swell drops back to 5 ft from the southwest, but the wind swings to a cross-shore. It’s marginal at best – not terrible, but not great. By Sunday afternoon, it’s a write-off with cross-on breezes.
Monday the 3rd brings onshore winds – solid 12 to 16 mph from the southwest and west-southwest, on the nose. Swell’s there but the wind’s wrecking it. Don’t bother.
Tuesday the 4th is a write-off too. Rain showers, 16 mph cross-on wind, and a messy 8 ft of swell. The energy’s massive at 3742, but it’s all chop and no shape.
Now, Wednesday the 5th is a hidden gem. Early morning, the swell is 6 ft from the southwest with a 14-second period and a light south-easterly cross-offshore breeze. The energy is moderate at 1178, and it’s clean. Then in the afternoon, the wind drops to glassy – 3 mph from the south-southwest. The swell drops to 5 ft, but it’s clean as a whistle. This is good surf, and the crowds at O’Neills Bay are often there, so don’t expect it to be empty.
Thursday the 6th is small – 3 ft in the morning, dropping to 2 ft by afternoon. Glassy conditions in the afternoon, but it’s pretty ordinary. A longboard might be your friend.
Friday the 7th is tiny – 2 ft both sessions. Clean, but really small. Not worth getting excited about.
Saturday the 8th is poor. A 3 ft swell with a short 8-second period, and a cross-shore wind. The afternoon picks up a little cross-off but it’s still under 1 ft. Not happening.
Sunday the 9th, the swell picks up to 3 ft from the west-southwest with a long 17-second period. Morning has a light offshore from the north-east, so it’s clean. But light rain in the afternoon makes it questionable. The long period could mean longer lulls and the wave might be a bit too straight for the beach break, but the offshore wind helps.
Monday the 10th is similar – 3 ft with a 16-second period, clean with a light offshore. The afternoon turns to a risk of thunderstorms and a light cross-on wind. Not the best.
Tuesday the 11th is small and glassy in the morning, but the swell is only 3 ft. Afternoon is a cross-on and pretty poor.
From Wednesday the 12th right through to Friday the 14th, it’s a write-off. Onshore winds, rain, and tiny swell. The energy is weak, staying under 700. Definitely a gap in the action.
Now, look ahead to Saturday the 15th. This is the second standout. Saturday morning, the swell jumps back to 8 ft from the west-southwest, with a 16-second period and a light offshore from the north-east. The energy is massive at 3466, and it’s clean. This is excellent for experienced surfers. The afternoon sees rain showers and a cross-on wind, so get your session in early. The crowds will be out, but it’s worth it.
Sunday the 16th, the swell drops to 6 ft with a long 18-second period. The morning is clean with a moderate north wind, but it’s marginal. The afternoon is a write-off with rain and strong cross-on wind.
So, your best bets are Saturday afternoon, August 1st, and Saturday morning, August 15th. Both are solid, clean, and powerful. The rest of the period is either small, windy, or both. Be patient and pick your moments.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Mon night. Very mild (max 14°C on Mon morning, min 7°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 14°C on Fri morning, min 6°C on Wed morning). Wind will be generally light. | |||||||||||||||||||
Sat 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | ||||||||||||||
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 13 | SW 12 | SW 12 | SW 11 | SW 12 | SW 19 | WSW 19 | WSW 17 | SW 16 | SW 16 | SW 14 | SW 14 | SW 13 | SW 13 | WSW 12 | SW 12 | SW 12 | SW 12 | WNW 8 | WNW 8 |
Wave Graph | ||||||||||||||||||||
2053 | 1137 | 633 | 479 | 448 | 846 | 1153 | 1607 | 2985 | 1224 | 1649 | 1147 | 690 | 388 | 268 | 147 | 118 | 69 | 73 | 257 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross | cross-on | on | on | on | on | cross-on | cross-on | cross-off | cross-off | glassy | glassy | cross-off | glassy | cross-off | cross-off | cross-off | cross-off |
High Tide | 11:28PM2.82m | 11:46AM2.64m | 00:02AM2.79m | 12:23PM2.62m | 00:39AM2.73m | 1:03PM2.56m | 1:20AM2.63m | 1:49PM2.49m | 2:08AM2.51m | 2:44PM2.40m | 3:08AM2.39m | 3:52PM2.34m | ||||||||
Low Tide | 5:43AM0.22m | 5:53PM0.25m | 6:20AM0.23m | 6:32PM0.31m | 6:59AM0.27m | 7:15PM0.40m | 7:44AM0.35m | 8:04PM0.51m | 8:35AM0.45m | 9:03PM0.62m | 9:37AM0.55m | 10:14PM0.69m | ||||||||
— | — | 7:20 | — | — | 7:18 | — | — | 7:18 | — | — | 7:16 | — | — | 7:16 | — | — | 7:15 | — | — | |
5:36 | — | — | 5:37 | — | — | 5:37 | — | — | 5:38 | — | — | 5:38 | — | — | 5:39 | — | — | 5:40 | — | |
mm | — | — | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | 1 | 3 |
Temp °C | 13 | 10 | 11 | 12 | 13 | 14 | 13 | 13 | 14 | 13 | 10 | 8 | 10 | 8 | 10 | 11 | 10 | 14 | 15 | 12 |
Feels °C | 9 | 6 | 6 | 8 | 10 | 9 | 8 | 8 | 9 | 7 | 5 | 5 | 7 | 5 | 8 | 9 | 7 | 10 | 12 | 9 |
Swell 1 Height (m) Direction Period (s) | WSW 13 | SW 12 | SW 12 | SW 11 | SW 12 | SW 19 | WSW 19 | WSW 17 | SW 16 | SW 10 | SW 14 | SW 14 | SW 13 | SW 13 | WSW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 14 |
2053 | 1137 | 633 | 479 | 448 | 846 | 1153 | 1607 | 2985 | 553 | 1649 | 1147 | 690 | 388 | 268 | 147 | 118 | 69 | 73 | 89 | |
Swell 2 Height (m) Direction Period (s) | W 23 | SW 22 | WSW 20 | WSW 20 | SW 18 | SW 11 | SW 11 | — | — | SW 16 | — | WSW 18 | WSW 18 | WSW 16 | SW 22 | SW 21 | WNW 8 | W 8 | WSW 18 | — |
11 | 18 | 38 | 38 | 166 | 103 | 101 | — | — | 1224 | — | 31 | 31 | 26 | 19 | 18 | 14 | 35 | 33 | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | NW 6 | SW 21 | — | — | — | — | — | — | — | — | S 7 | — | W 8 | WSW 21 | WSW 19 | WSW 18 | — |
— | — | — | 1 | 18 | — | — | — | — | — | — | — | — | 4 | — | 1 | 42 | 35 | 32 | — | |
Wind waves Height (m) Direction Period (s) | — | — | S 4 | — | — | SW 9 | SW 8 | SW 8 | SW 10 | — | — | — | — | NE 3 | ENE 3 | E 3 | — | NNW 4 | WNW 8 | WNW 8 |
— | — | 20 | — | — | 197 | 251 | 555 | 757 | — | — | — | — | 2 | 3 | 1 | — | 6 | 73 | 257 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 1 | 8 | 78 | 119 | 158 | 199 | 78 | 235 | 8 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
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.











