Surf Forecasts:
Nine Mile surf forecast from 31 Aug 2026:
- Best quality surf: Monday 7 Sep, 9AM (local time) - 11ft (3.5m), 14s period, W swell with glassy winds.
- Most powerful swell: Monday 31 Aug, 9PM (local time) - 16ft (5.0m), 13s period, W swell with 7,607 kJ wave energy.
- Next surfable swell (1★+): Tuesday 1 Sep, 12PM (local time) - 10ft (3.0m), 13s period with W swell.
Best Forecast Surf Conditions for Nine Mile this week:
The surf forecast for Nine Mile over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Sep 01) at 12PM. The primary swell is predicted to be 3.0m and 13s period with a secondary swell of 0.2m and 22s. Another secondary swell of 1.4m and 10s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Nine Mile in the next 16 days are 5.0m 13s and forecast to arrive on Monday (Aug 31) at 9PM. 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+) | 12PM (Tue 1st Sep) | 10ft (3.0m) 13s |
| Best Surf | 9AM (Mon 7th Sep) | 11ft (3.5m) 14s |
| Most Powerful | 9PM (Mon 31st Aug) | 16ft (5.0m) 13s |
Table - best surf conditions forecast for Nine Mile over the next 16 days.
Short Range ForecastHeavy rain (total 32mm), heaviest during Wed night. Very mild (max 14°C on Wed night, min 7°C on Tue morning). Winds decreasing (strong winds from the WSW on Mon afternoon, calm by Tue afternoon). | Days 4-6 Weather SummaryHeavy rain (total 65mm), heaviest during Sat night. Very mild (max 15°C on Thu night, min 10°C on Fri morning). Winds increasing (light winds from the NW on Thu morning, strong winds from the NNW by Thu night). | ||||||||||||||||||||
Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | |||||||||||||||
AM | 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) | W 11 | W 12 | W 13 | W 13 | W 14 | W 14 | W 14 | W 14 | W 9 | WNW 8 | WSW 14 | WSW 14 | WNW 10 | W 11 | W 13 | W 14 | W 14 | W 16 | W 16 | W 16 | W 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 5326 | 7606 | 7003 | 3612 | 1444 | 1923 | 1465 | 1597 | 1018 | 469 | 980 | 861 | 2310 | 5167 | 5089 | 4207 | 3883 | 4523 | 2079 | 2175 | 2682 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-on | cross-on | cross-on | on | cross | cross-off | cross-on | on | cross-on |
High Tide | 12:34PM2.74m | 00:51AM2.79m | 1:12PM2.69m | 1:32AM2.70m | 1:55PM2.60m | 2:18AM2.57m | 2:44PM2.48m | 3:14AM2.42m | 3:44PM2.36m | 4:24AM2.29m | 5:00PM2.29m | 5:48AM2.25m | 6:23PM2.33m | ||||||||
Low Tide | 6:42PM0.17m | 7:04AM0.16m | 7:22PM0.24m | 7:46AM0.27m | 8:07PM0.34m | 8:34AM0.42m | 9:01PM0.47m | 9:31AM0.57m | 10:06PM0.59m | 10:41AM0.69m | 11:24PM0.64m | 12:01PM0.71m | 00:45AM0.57m | ||||||||
 |  |  | | |  | | | | | |  | | | | | | | |  | | |
 | 7:03 | — | — | 7:01 | — | — | 6:58 | — | — | 6:58 | — | — | 6:56 | — | — | 6:54 | — | — | 6:52 | — | — |
 | — | 6:07 | — | — | 6:08 | — | — | 6:09 | — | — | 6:10 | — | — | 6:12 | — | — | 6:13 | — | — | 6:14 | — |
mm | 2 | 2 | 1 | 2 | 2 | 4 | 2 | 3 | 14 | 4 | 2 | 19 | 5 | 3 | 6 | 3 | 2 | 21 | 20 | 6 | 4 |
Temp °C | 10 | 9 | 9 | 7 | 10 | 11 | 13 | 13 | 14 | 14 | 14 | 15 | 11 | 11 | 10 | 11 | 12 | 12 | 12 | 11 | 9 |
Feels °C | 2 | -1 | -1 | 3 | 6 | 8 | 9 | 8 | 10 | 13 | 11 | 9 | 4 | 3 | 3 | 8 | 9 | 8 | 7 | 6 | 0 |
Swell 1 Height (m) Direction Period (s) | — | — | — | W 13 | W 14 | W 14 | W 14 | — | W 9 | WNW 8 | WSW 14 | WSW 14 | WSW 16 | — | W 13 | W 14 | W 14 | W 16 | W 16 | WNW 9 | W 15 |
| kJ | — | — | — | 3612 | 1444 | 1923 | 1465 | — | 1018 | 469 | 980 | 861 | 978 | — | 5089 | 4207 | 3883 | 4523 | 2079 | 974 | 2682 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | WSW 18 | — | WSW 15 | WSW 11 | — | — | — | — | WSW 15 | — | — | — | — | W 16 | NW 9 |
| kJ | — | — | — | — | — | — | 61 | — | 228 | 356 | — | — | — | — | 487 | — | — | — | — | 2175 | 328 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | WSW 15 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | 167 | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | W 11 | W 12 | W 13 | WSW 10 | W 8 | — | — | W 14 | — | — | NW 8 | NW 8 | WNW 10 | W 11 | — | — | — | — | NW 9 | — | — |
| kJ | 5326 | 7606 | 7003 | 522 | 736 | — | — | 1597 | — | — | 346 | 690 | 2310 | 5167 | — | — | — | — | 906 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 156 | 179 | 155 | 5 | 0 | 155 | 12 | 157 | 177 | 73 | 65 | 186 | 186 | 155 | 186 | 186 | 178 | 178 | 186 | 155 | 742 |
Best forecast wave conditions in West Coast South Island | |||||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Nine Mile 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 Nine Mile Surf forecast
The above surf forecast table for Nine Mile provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Nine Mile can be found by selecting the local surf guide option on the grey menu. Our Nine Mile 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 (Nine Mile) 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 Nine Mile 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.
Nine Mile is 177 km (110 miles) from the city of Christchurch. If you plan a holiday in West Coast South Island, look for hotels and other accommodation in Christchurch. Christchurch has rooms for a wide range of budgets as well as car hire and transport links.
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