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Little Wanganui Surf Forecast
/ West Coast South Island (21 surf breaks) /
Surf Forecasts:
Little Wanganui surfForecast / West Coast South Island / New Zealand
12 Day Weather and Surf, issued 11 am Wednesday 17 Sep 2025 NZST
Best Forecast Surf Conditions for Little Wanganui this week:
The surf forecast for Little Wanganui over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 18) at 3AM. The primary swell is predicted to be 4.0m and 11s period with a secondary swell of 0.1m and 15s. The wind is predicted to be onshore as the swell arrives.
The most powerful waves expected at Little Wanganui in the next 12 days are 3.0m 15s and forecast to arrive on Friday (Sep 19) at 12AM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Thu 18th Sep) | 13ft (4.0m) 11s |
| Best Surf | 3AM (Thu 18th Sep) | 13ft (4.0m) 11s |
| Most Powerful | 12AM (Fri 19th Sep) | 10ft (3.0m) 15s |
Table - best surf conditions forecast for Little Wanganui over the next 12 days.
Short Range Forecast Heavy rain (total 45mm), heaviest during Wed night. Very mild (max 14°C on Wed night, min 6°C on Thu night). Winds decreasing (fresh winds from the NNW on Wed night, calm by Fri morning). | Days 3-6 Weather Summary Heavy rain (total 32mm), heaviest during Sun afternoon. Very mild (max 14°C on Mon morning, min 8°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
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) (?) | 14 | 8 | 11 | 11 | 11 | 15 | 13 | 13 | 12 | 11 | 11 | 18 | 8 | 11 | 11 | 14 | 14 | 13 | 12 | 12 | 13 |
Wave (?)Graph  | |||||||||||||||||||||
 kJ (?) | 1797 | 955 | 3646 | 2821 | 1791 | 4221 | 3449 | 2705 | 1519 | 713 | 465 | 156 | 787 | 3923 | 2086 | 2304 | 2419 | 1686 | 1198 | 957 | 902 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- on | on | on | cross- on | glass | cross- on | off | cross | cross- on | off | cross- off | cross- off | off | glass | on | off | glass | glass | off |
High Tide / height (m) | 7:13PM 2.61 | 7:47AM 2.58 | 8:12PM 2.75 | 8:39AM 2.72 | 8:59PM 2.89 | 9:22AM 2.85 | 9:38PM 3.00 | 10:00AM 2.95 | 10:14PM 3.07 | 10:34AM 3.00 | 10:48PM 3.09 | 11:06AM 3.02 | 11:20PM 3.06 | ||||||||
Low Tide / height (m) | 12:49PM 0.75 | 1:28AM 0.63 | 1:53PM 0.62 | 2:25AM 0.48 | 2:44PM 0.47 | 3:11AM 0.34 | 3:27PM 0.34 | 3:50AM 0.22 | 4:05PM 0.25 | 4:26AM 0.16 | 4:40PM 0.20 | 5:00AM 0.15 | 5:14PM 0.21 | ||||||||
Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | |||||||||||||||
| Sunrise | 6:30 | - | - | 6:28 | - | - | 6:26 | - | - | 6:24 | - | - | 6:22 | - | - | 6:22 | - | - | 6:20 | - | - |
| Sunset | - | 6:22 | - | - | 6:22 | - | - | 6:23 | - | - | 6:24 | - | - | 6:25 | - | - | 6:27 | - | - | 6:28 | - |
 | |  |  | |  |  | |  |  | | | |  | | | |  | | | | |
Rain (mm) | 2 | 4 | 26 | 6 | 5 | 2 | - | - | - | - | - | - | 4 | 28 | - | - | - | - | - | - | - |
| Temp. °C | 13 | 13 | 14 | 11 | 11 | 10 | 10 | 11 | 7 | 11 | 11 | 11 | 13 | 13 | 11 | 14 | 14 | 10 | 14 | 13 | 11 |
| Feels °C (?) | 10 | 9 | 8 | 6 | 7 | 6 | 8 | 8 | 4 | 8 | 8 | 7 | 8 | 8 | 10 | 11 | 12 | 9 | 12 | 11 | 8 |
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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 West Coast South Island
Still cross-shore at Little Wanganui (moderate winds from the NNW at WestportAeroAws 55 km from Little Wanganui). 2.1m 7s swell from the WNW with a 1.4m 14s groundswell from the WSW. 2 swells combining so expect closeout sets.
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 Little Wanganui 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 Little Wanganui Surf forecast
The above surf forecast table for Little Wanganui provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Little Wanganui can be found by selecting the local surf guide option on the grey menu. Our Little Wanganui 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 (Little Wanganui) 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 Little Wanganui 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 West Coast South Island? If you are looking for accommodation near Little Wanganui, camping, hotels and holiday cottages in West Coast South Island, consider staying in Nelson which is 102 km (63 miles) away.
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