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Tahunanui Beach Surf Forecast
/ Nelson – Tasman Bay (18 surf breaks) /
Surf Forecasts:
Tahunanui Beach surfForecast / Nelson – Tasman Bay / New Zealand
12 Day Weather and Surf, issued 11 am Wednesday 17 Sep 2025 NZST
Best Forecast Surf Conditions for Tahunanui Beach this week:
The surf forecast for Tahunanui Beach over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 18) at 6AM. The primary swell is predicted to be 2.5m and 9s period with a secondary swell of 1.5m and 8s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Tahunanui Beach in the next 12 days are 3.5m 10s and forecast to arrive on Sunday (Sep 21) at 9PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 6s period and expected on Tuesday (Sep 23) at 6PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Thu 18th Sep) | 8ft (2.5m) 9s |
| Best Surf | 6AM (Thu 18th Sep) | 8ft (2.5m) 9s |
| Most Powerful | 9PM (Sun 21st Sep) | 11ft (3.5m) 10s |
Table - best surf conditions forecast for Tahunanui Beach over the next 12 days.
Short Range Forecast Moderate rain (total 10mm), heaviest on Wed night. Very mild (max 17°C on Wed morning, min 5°C on Fri night). Winds decreasing (fresh winds from the NNW on Wed night, calm by Fri night). | Days 3-6 Weather Summary Moderate rain (total 19mm), heaviest on Sun afternoon. Very mild (max 15°C on Mon morning, min 7°C on Sat morning). Mainly strong winds. | ||||||||||||||||||||
Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | |||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | |||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||
| Period(s) (?) | 5 | 6 | 8 | 8 | 8 | 8 | 8 | 14 | 13 | 7 | 4 | 4 | 7 | 9 | 10 | 10 | 9 | 8 | 8 | 6 | 6 |
Wave (?)Graph  | |||||||||||||||||||||
 kJ (?) | 36 | 127 | 276 | 230 | 140 | 66 | 30 | 36 | 17 | 3 | 36 | 21 | 263 | 928 | 687 | 228 | 277 | 68 | 31 | 72 | 80 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | cross- on | on | cross- off | cross | cross- off | cross- off | on | glass | glass | on | cross- on | on | on | glass | cross- off | on | glass | glass | on | glass |
High Tide / height (m) | 6:50PM 3.28 | 6:57AM 3.22 | 7:51PM 3.54 | 7:57AM 3.42 | 8:34PM 3.78 | 8:44AM 3.64 | 9:10PM 3.96 | 9:24AM 3.83 | 9:44PM 4.07 | 10:00AM 3.96 | 10:15PM 4.13 | 10:33AM 4.03 | 10:46PM 4.12 | ||||||||
Low Tide / height (m) | 11:53AM 1.52 | 12:56AM 1.27 | 1:16PM 1.37 | 1:52AM 1.03 | 2:15PM 1.13 | 2:35AM 0.82 | 2:58PM 0.90 | 3:12AM 0.67 | 3:33PM 0.72 | 3:46AM 0.58 | 4:03PM 0.60 | 4:17AM 0.55 | 4:31PM 0.57 | ||||||||
Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | |||||||||||||||
| Sunrise | 6:24 | - | - | 6:24 | - | - | 6:22 | - | - | 6:20 | - | - | 6:18 | - | - | 6:16 | - | - | 6:15 | - | - |
| Sunset | - | 6:17 | - | - | 6:19 | - | - | 6:20 | - | - | 6:21 | - | - | 6:22 | - | - | 6:22 | - | - | 6:23 | - |
 |  |  | | | |  | |  | | | | |  | | | |  | | | | |
Rain (mm) | - | - | 7 | - | - | 1 | 2 | - | - | - | - | - | 2 | 15 | 2 | - | - | - | - | - | - |
| Temp. °C | 17 | 17 | 14 | 15 | 15 | 9 | 8 | 8 | 9 | 9 | 12 | 10 | 13 | 13 | 13 | 15 | 14 | 10 | 13 | 13 | 12 |
| Feels °C (?) | 11 | 11 | 11 | 10 | 9 | 6 | 6 | 4 | 7 | 6 | 7 | 6 | 7 | 6 | 11 | 13 | 11 | 8 | 10 | 11 | 11 |
- 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)
Recent Eyeball Surf Reports for Nelson - Tasman Bay
The wind is still cross-off at Tahunanui Beach (moderate winds from the WSW at NelsonAeroAws 3 km from Tahunanui Beach). A 2.0m windswell from the NNW
1 h 12 min ago
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 Tahunanui Beach 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 Tahunanui Beach Surf forecast
The above surf forecast table for Tahunanui Beach provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Tahunanui Beach can be found by selecting the local surf guide option on the grey menu. Our Tahunanui Beach 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 (Tahunanui Beach) 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 Tahunanui Beach 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 Tahunanui, camping, hotels and holiday cottages in Nelson - Tasman Bay, consider staying in Nelson which is 3 km (2 miles) away. Alternatively, find information about places to stay and car hire in Blenheim which is 65 km (40 miles) away
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