Surf Forecasts:
Onemana surf forecast from 25 Aug 2026:
- Best quality surf: Sunday 30 Aug, 12AM (local time) - 7ft (2.2m), 8s period, N swell with offshore winds.
- Most powerful swell: Sunday 30 Aug, 12AM (local time) - 7ft (2.2m), 8s period, N swell with 538 kJ wave energy.
- Next surfable swell (1★+): Saturday 29 Aug, 6PM (local time) - 6.5ft (2.0m), 7s period with N swell.
Best Forecast Surf Conditions for Onemana this week:
The surf forecast for Onemana over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Aug 29) at 6PM. The primary swell is predicted to be 2.0m and 7s period with a secondary swell of 0.1m and 13s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Onemana in the next 16 days are 2.2m 8s and forecast to arrive on Sunday (Aug 30) at 12AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 6s period and expected on Saturday (Aug 29) at 9AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Sat 29th Aug) | 6.5ft (2.0m) 7s |
| Best Surf | 12AM (Sun 30th Aug) | 7ft (2.2m) 8s |
| Most Powerful | 12AM (Sun 30th Aug) | 7ft (2.2m) 8s |
Table - best surf conditions forecast for Onemana over the next 16 days.
The Lowdown
Alright, Rusty here. Looking at the long-range, it’s a tough stretch with a serious flat spell before anything shows up.
Water temp is around 57°F, which is normal for this time of year.
You’re looking at a big gap of about 11 days with next to no surf worth mentioning. The only flicker of hope is Tuesday morning, September 8th at Onemana. That morning shows a 5ft swell out of the ESE with a short, steep 7-second period. The combined energy hits 419 (strong). Winds are light offshore from the WNW, making for glassy, clean conditions. That’s your standout session. Because the swell is over 5ft, it’s not for beginners—stick to the more experienced crew.
After that, Tuesday afternoon drops off to 4ft from the ESE, still clean but nothing special. The rest of the week just fizzles out with weak, choppy, or onshore slop.
If you’re patient, that Tuesday morning is the only real bet. It’s a ways out, so keep your fingers crossed.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Thu night. Very mild (max 18°C on Wed afternoon, min 9°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 33mm), heaviest during Sat morning. Very mild (max 15°C on Fri afternoon, min 8°C on Sun night). Winds increasing (light winds from the WSW on Sat night, fresh winds from the WNW by Sun morning). | |||||||||||||||||||
Tue 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | ||||||||||||||
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) | E 12 | N 14 | N 13 | E 12 | E 12 | E 12 | E 12 | ENE 5 | ENE 5 | E 5 | N 5 | N 6 | N 7 | N 8 | NNE 7 | NE 8 | NE 8 | SE 6 | SE 6 | NE 10 |
Wave Graph  | ||||||||||||||||||||
 kJ | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 30 | 41 | 7 | 31 | 64 | 255 | 538 | 117 | 86 | 151 | 188 | 64 | 85 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | cross-off | off | glassy | cross-on | cross-on | cross-off | cross-off | cross-off | cross | cross | off | cross-off | off | cross-off | cross-off | cross-off | cross-off |
High Tide | 4:48PM1.55m | 5:00AM1.49m | 5:35PM1.60m | 5:49AM1.53m | 6:19PM1.66m | 6:34AM1.58m | 7:01PM1.72m | 7:18AM1.63m | 7:41PM1.77m | 8:00AM1.68m | 8:20PM1.80m | 8:42AM1.72m | 9:00PM1.82m | |||||||
Low Tide | 10:57PM0.52m | 11:13AM0.39m | 11:47PM0.46m | 12:01PM0.34m | 00:34AM0.39m | 12:46PM0.29m | 1:18AM0.32m | 1:29PM0.25m | 1:59AM0.25m | 2:12PM0.23m | 2:40AM0.20m | 2:54PM0.22m | ||||||||
 |  | |  |  | | |  | | |  |  | | |  | |  | | | | |
 | — | — | 6:46 | — | — | 6:45 | — | — | 6:43 | — | — | 6:41 | — | — | 6:41 | — | — | 6:39 | — | — |
 | 5:49 | — | — | 5:50 | — | — | 5:51 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:53 | — |
mm | — | — | — | — | — | — | — | 4 | — | — | 1 | 10 | 6 | — | 1 | 1 | 12 | 2 | — | — |
Temp °C | 16 | 11 | 16 | 18 | 13 | 16 | 15 | 13 | 16 | 15 | 13 | 14 | 14 | 13 | 12 | 13 | 11 | 12 | 13 | 8 |
Feels °C | 12 | 8 | 13 | 15 | 11 | 16 | 14 | 10 | 12 | 10 | 10 | 11 | 11 | 12 | 8 | 8 | 8 | 5 | 7 | 2 |
Swell 1 Height (m) Direction Period (s) | NE 10 | NE 10 | NE 10 | NW 4 | NNW 4 | NE 10 | NE 10 | NE 10 | ENE 5 | E 5 | E 5 | N 6 | NE 12 | N 8 | NNE 7 | NE 8 | NE 8 | NE 8 | NE 8 | NE 10 |
| kJ | 4 | 4 | 4 | 2 | 1 | 4 | 4 | 4 | 41 | 7 | 4 | 64 | 6 | 367 | 117 | 86 | 151 | 84 | 58 | 85 |
Swell 2 Height (m) Direction Period (s) | E 12 | E 11 | E 12 | NE 10 | NE 10 | NW 4 | E 12 | NE 8 | NE 10 | NE 10 | NE 9 | E 5 | E 13 | — | NNW 7 | N 7 | NNW 6 | NW 7 | N 7 | SE 6 |
| kJ | 3 | 3 | 3 | 4 | 4 | 1 | 3 | 2 | 4 | 4 | 3 | 2 | 3 | — | 70 | 31 | 24 | 2 | 1 | 23 |
Swell 3 Height (m) Direction Period (s) | — | N 14 | N 13 | E 12 | E 12 | E 12 | E 10 | N 12 | N 10 | — | — | NE 9 | — | — | NE 9 | — | — | — | N 8 | SE 5 |
| kJ | — | 4 | 3 | 3 | 3 | 3 | 2 | 3 | 2 | — | — | 3 | — | — | 42 | — | — | — | 1 | 4 |
Wind waves Height (m) Direction Period (s) | WNW 3 | — | WNW 3 | — | NW 4 | — | — | ENE 5 | NNW 3 | N 5 | N 5 | N 6 | N 7 | N 8 | WSW 3 | NNW 6 | W 2 | SE 6 | SE 6 | SW 3 |
| kJ | 1 | — | 1 | — | 4 | — | — | 30 | 6 | 40 | 31 | 112 | 255 | 538 | 1 | 26 | 1 | 188 | 64 | 1 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 245 | 245 | 240 | 240 | 245 | 127 | 107 | 107 | 6 | 122 | 131 | 110 | 83 | 0 | 36 | 0 | 5 | 59 | 29 | 5 |
Best forecast wave conditions in The Coromandel | ||||||||||||||||||||
Best forecast wave conditions in New Zealand | ||||||||||||||||||||
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Information about the Onemana Surf forecast
The above surf forecast table for Onemana provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Onemana can be found by selecting the local surf guide option on the grey menu. Our Onemana 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 (Onemana) 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 Onemana 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.
Onemana is 64 km (40 miles) from Tauranga. If you plan a holiday in The Coromandel, look for hotels and other accommodation in Tauranga. Tauranga has rooms for a wide range of budgets as well as car hire and transport links.
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