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Surf Forecasts:
Onekaka surfForecast / Nelson – Tasman Bay / New Zealand
16 Day Weather and Surf, issued 5 am Saturday 02 May 2026 NZSTForecast update in hr min s Forecast update imminent
Onekaka surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Onekaka sea temperature is
16.1° C
(Which is normal for this time of year)Best Forecast Surf Conditions for Onekaka this week:
The most powerful waves expected at Onekaka in the next 16 days are 1.1m 6s and forecast to arrive on Wednesday (May 06) at 9PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.8m 7s period and expected on Thursday (May 07) at 6PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 9PM (Wed 6th May) | 3.5ft (1.1m) 6s |
Table - best surf conditions forecast for Onekaka over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Very mild (max 15°C on Sun afternoon, min 8°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 41mm), heaviest during Wed night. Very mild (max 17°C on Thu afternoon, min 9°C on Tue morning). Wind will be generally light. | ||||||||||||||||||||
Saturday 2 | Sunday 3 | Monday 4 | Tuesday 5 | Wednesday 6 | Thursday 7 | Friday 8 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
NW 13 | NW 16 | NW 15 | NW 14 | NW 14 | NW 14 | W 14 | NNW 3 | W 15 | NW 4 | NW 3 | NNW 3 | N 10 | NNW 4 | NNW 6 | N 6 | N 7 | NNW 7 | NNW 7 | N 6 | N 6 | |
0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 3 | 5 | 2 | 0 | 15 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
Wind (km/h) | |||||||||||||||||||||
glassy | glassy | off | glassy | glassy | off | glassy | glassy | off | glassy | cross | off | glassy | cross | cross | cross | cross | cross | glassy | glassy | cross-off | |
High Tide | 9:33AM4.26m | 9:59PM4.41m | 10:06AM4.18m | 10:31PM4.42m | 10:40AM4.06m | 11:03PM4.35m | 11:15AM3.91m | 11:34PM4.20m | 11:53AM3.75m | 00:07AM3.98m | 12:36PM3.59m | 00:45AM3.73m | 1:25PM3.44m | 1:32AM3.48m | |||||||
Low Tide | 3:37PM0.35m | 3:49AM0.43m | 4:09PM0.41m | 4:19AM0.51m | 4:42PM0.53m | 4:50AM0.61m | 5:18PM0.68m | 5:23AM0.74m | 5:58PM0.84m | 5:59AM0.90m | 6:42PM1.00m | 6:43AM1.09m | 7:30PM1.12m | ||||||||
 | |  | | | | | | | | | |  |  |  |  |  |  | | | | |
 | 7:15 | — | — | 7:16 | — | — | 7:16 | — | — | 7:18 | — | — | 7:18 | — | — | 7:20 | — | — | 7:20 | — | — |
 | — | 5:36 | — | — | 5:34 | — | — | 5:32 | — | — | 5:31 | — | — | 5:30 | — | — | 5:30 | — | — | 5:28 | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 23 | 7 | 3 | 6 | 2 | — | 2 | |
Temp °C | 13 | 13 | 11 | 14 | 15 | 11 | 13 | 13 | 10 | 13 | 15 | 13 | 16 | 16 | 16 | 16 | 17 | 16 | 16 | 17 | 17 |
12 | 12 | 10 | 13 | 15 | 10 | 12 | 12 | 9 | 11 | 13 | 11 | 15 | 15 | 16 | 16 | 18 | 17 | 17 | 18 | 18 | |
Swell 1 Height (m) Direction Period (s) | NW 13 | NW 16 | NW 15 | NW 14 | NW 14 | NNW 3 | — | — | NNW 3 | — | W 15 | — | N 3 | NNW 5 | N 6 | W 15 | W 15 | N 7 | N 6 | N 6 | N 6 |
 kJ | 7 | 10 | 9 | 8 | 8 | 1 | — | — | 1 | — | 4 | — | 1 | 7 | 59 | 5 | 4 | 143 | 84 | 63 | 26 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | N 11 | NW 14 | W 14 | N 12 | W 15 | — | N 11 | W 14 | N 6 | W 16 | W 16 | — | — | W 15 | W 15 | W 14 | W 19 |
| kJ | — | — | — | — | 2 | 7 | 4 | 3 | 4 | — | 2 | 4 | 1 | 5 | 5 | — | — | 4 | 4 | 4 | 7 |
Swell 3 Height (m) Direction Period (s) | N 11 | — | N 10 | N 10 | N 14 | N 11 | N 12 | W 13 | — | W 16 | — | N 11 | N 10 | N 10 | — | — | — | — | — | — | N 11 |
| kJ | 2 | — | 2 | 2 | 4 | 2 | 3 | 3 | — | 5 | — | 2 | 2 | 2 | — | — | — | — | — | — | 2 |
Wind waves Height (m) Direction Period (s) | — | — | — | S 2 | — | — | — | NNW 3 | — | NW 4 | NW 3 | NNW 3 | — | NNW 4 | NNW 6 | N 6 | N 7 | NNW 7 | NNW 7 | — | — |
| kJ | — | — | — | 1 | — | — | — | 1 | — | 3 | 5 | 2 | — | 15 | 112 | 73 | 167 | 328 | 163 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 91 | 173 | 24 | 27 | 144 | 91 | 91 | 173 | 91 | 91 | 91 | 24 | 24 | 190 | 91 | 73 | 99 | 73 | 73 | 29 | 91 |
Best forecast wave conditions in Nelson - Tasman Bay | |||||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Onekaka surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Onekaka Surf forecast
The above surf forecast table for Onekaka provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Onekaka can be found by selecting the local surf guide option on the grey menu. Our Onekaka 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 (Onekaka) 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 Onekaka 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.
Are you planning a holiday in Nelson - Tasman Bay? If you are looking for accommodation near Onekaka, camping, hotels and holiday cottages in Nelson - Tasman Bay, consider staying in Nelson which is 76 km (47 miles) away.
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