O'Neills Bay Surf Break

Lat Long: 36.88° S 174.44° E

O'Neills Bay Surf Forecast and Surf Report

Issued: 11 pm 10 Aug 2026 (local time)

Forecast update in  hr  min

Today's O'Neills Bay sea temperature is
13.7° C
0.7° 

O'Neills Bay surf forecast from 10 Aug 2026:

  • Best quality surf: Thursday 13 Aug, 3PM (local time) - 3ft (0.9m), 17s period, WSW swell with offshore winds.
  • Most powerful swell: Monday 17 Aug, 3AM (local time) - 8ft (2.5m), 15s period, SW swell with 2,856 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 11 Aug, 6AM (local time) - 3.5ft (1.1m), 14s period with WSW 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 Tuesday (Aug 11) at 6AM. The primary swell is predicted to be 1.1m and 14s period with a secondary swell of 0.7m and 7s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at O'Neills Bay in the next 16 days are 2.5m 15s and forecast to arrive on Monday (Aug 17) at 3AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Wednesday (Aug 12) at 12PM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Tue 11th Aug)3.5ft (1.1m) 14s
Best Surf 3PM (Thu 13th Aug)3ft (0.9m) 17s
Most Powerful 3AM (Mon 17th Aug)8ft (2.5m) 15s

Table - best surf conditions forecast for O'Neills Bay over the next 16 days.


The Lowdown

G’day, Rusty here, your local surf reporter. Let’s take a look at what O’Neills Bay is serving up for the next couple of weeks.

We’ve got a good run of fun waves starting Tuesday the 11th, but there’s a solid stretch of nothing later on. The first few days are where the gold is, with clean conditions and decent swell. Then it gets rough and messy, followed by a long quiet spell.

Tuesday 11th (Morning & Afternoon) – This is the opener. We’ve got a consistent 3ft swell from the WSW with a 14-second pulse, giving it some real weight for the size. Wind is light ENE and offshore, smoothing it all out. Combined swell energy is 480, bumping to 533 in the afternoon – that’s solid moderate power. This is clean, clean, clean. For the advanced crew, O’Neills will be offering up some proper lines. Crowds are possible here, so keep your eyes open.

Wednesday 12th – Still in the mix, but the swell drops to 2ft. The wind holds offshore from the ENE, but it’s blowing 30 km/h so there’s a bit of a breeze. The period is a very long 18 seconds in the morning – that’s serious groundswell – but it’s a smaller wave. The afternoon has a bit more energy (268 combined). It’s rideable and clean, but not the top pick.

Thursday 13th – A sleeper hit. Morning is average with a 3ft WNW swell at a short 10 seconds, but the afternoon is where it’s at. The swell swings back to WSW, jumping to 17 seconds period, and the combined energy hammers up to 963 – that’s getting strong. Wind is light offshore from the ENE. This arvo session is quality. Expect some proper walls.

Friday 14th (Morning & Afternoon) – This is the peak. The swell pushes to 5ft in the morning and holds at 4ft in the afternoon, both from the WSW. The period is a lovely 16 seconds, and the combined energy tops out at 1040 in the morning – that’s a strong, powerful groundswell. Wind is light offshore from the E. These waves will have shape and push. If you can get out Friday morning, that’s the call of the forecast. Afternoon is a close second.

Saturday 15th – Things turn. Swell bumps to 5ft in the morning, but the wind goes cross-shore from the SSE at 20 km/h, putting a chop on it. By the afternoon it’s 6ft and cross-onshore from the SSW at 40 km/h – choppy and messy. Combined energy is 2266 in the arvo, but the quality is gone. It’s a write-off.

Sunday 16th & Monday 17th – Big, messy, and ugly. Morning on Sunday has 7ft swell with a fresh cross-shore wind from the S at 50 km/h. Monday morning hits 8ft – that’s expert-only size anyway – but with a fresh cross-onshore wind from the S at 50 km/h, it’s a lumpy, blown-out mess. Kite surfers might have a look, but for a paddle surfer, it’s a hard pass.

Tuesday 18th through Saturday 22nd – A long stretch of poor conditions. The swell hangs around from 5ft to 6ft, but the wind is consistently cross to cross-onshore from the S and SW. It’s choppy, lumpy, and not worth paddling out for. There’s a 4-day gap here with no worthwhile surf.

Thursday 20th Morning – A brief glimmer. The swell is 6ft from the WSW with a 14-second period, and the wind goes glassy – SSE at 8 km/h. Combined energy is 1142, so there’s real power. This morning window is clean and has some punch, but the afternoon turns cross-onshore again.

Sunday 23rd Morning – Another small window. Swell drops to 3ft from the SW with a 12-second period, and we get offshore wind from the E at 8 km/h. Clean, but small. Combined energy is 291 – weak.

Monday 24th Through Wednesday 26th – The final stretch is a flat, poor run. Swell drops to 1ft to 2ft, winds are all over the shop, and the combined energy is below 200 most of the time. Not worth a look.

Overall, lock in Friday the 14th as the standout. Thursday afternoon the 13th is a ripper too. After that, you’re waiting for Thursday the 20th morning for a glassy window, but it’s a long gap.

Stay frothing.
Rusty

Short Range Forecast

Light rain (total 6mm), mostly falling on Wed afternoon. Very mild (max 16°C on Thu afternoon, min 11°C on Tue morning). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 8mm), mostly falling on Thu night. Very mild (max 16°C on Fri morning, min 11°C on Fri night). Winds increasing (light winds from the ENE on Thu night, fresh winds from the S by Sat night).

Tuesday
11
Wednesday
12
Thursday
13
Friday
14
Saturday
15
Sunday
16
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
2
2
2
1
2
2
2
3
3
3
3
3
2
0
2
1
0
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.1
WSW
14
1
WSW
14
1
WSW
13
0.7
WSW
19
0.7
WSW
18
0.7
WSW
16
0.7
WSW
16
0.9
WNW
10
0.9
WSW
17
1
WSW
16
1.4
WSW
16
1.3
WSW
16
1.3
WSW
15
1.6
WSW
17
1.9
WSW
17
2.2
WSW
16
2
WSW
16
2
WSW
16
1.8
WSW
15
Wave Graph
Metric surfscale
Energy kJ
515
396
331
322
270
237
217
167
475
559
962
788
784
1324
2146
2450
1928
1832
1467
Wind (km/h)
5
SSW
5
ENE
5
ENE
25
ENE
25
ENE
25
ENE
20
ENE
20
ENE
10
ENE
10
ENE
10
E
15
E
10
ESE
20
SSE
25
SSW
20
S
30
S
30
S
25
S
Wind State
cross-on
off
off
off
off
off
off
off
off
off
off
off
cross-off
cross
cross-on
cross
cross
cross-on
cross
High Tide
8:00AM2.58m
8:30PM2.84m
8:53AM2.73m
9:19PM3.00m
9:41AM2.84m
10:03PM3.09m
10:25AM2.90m
10:45PM3.10m
11:07AM2.89m
11:25PM3.03m
11:47AM2.83m
00:04AM2.89m
Low Tide
1:50AM0.37m
2:10PM0.23m
2:45AM0.18m
3:02PM0.08m
3:35AM0.04m
3:49PM-0.02m
4:20AM-0.05m
4:34PM-0.05m
5:03AM-0.06m
5:17PM-0.01m
5:43AM0.00m
5:58PM0.11m
part cloud
cloud
cloud
cloud
part cloud
light rain
light rain
rain showers
light rain
light rain
light rain
rain showers
part cloud
light rain
cloud
light rain
cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:09
7:09
7:07
7:07
7:05
7:05
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:44
5:45
5:45
5:46
5:46
5:47
 mm
1
3
1
1
2
2
1
2
1
Temp °C
13
14
14
13
15
14
13
15
16
13
16
16
12
13
14
13
13
12
11
Feels °C
11
13
12
10
10
10
10
13
15
12
14
14
10
10
10
9
8
6
6
  • Map Icons:
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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 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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