Surf Forecasts:
Catlins River Mouth surf forecast from 6 Aug 2026:
- Best quality surf: Sunday 9 Aug, 3PM (local time) - 3.5ft (1.0m), 16s period, SSW swell with cross-offshore winds.
- Most powerful swell: Thursday 13 Aug, 6PM (local time) - 3ft (0.9m), 18s period, SSW swell with 604 kJ wave energy.
- Next surfable swell (1★+): Friday 7 Aug, 12AM (local time) - 2.5ft (0.8m), 13s period with S swell.
Best Forecast Surf Conditions for Catlins River Mouth this week:
The surf forecast for Catlins River Mouth over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Aug 07) at 12AM. The primary swell is predicted to be 0.8m and 13s period with a secondary swell of 0.9m and 9s. Another secondary swell of 0.8m and 10s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Catlins River Mouth in the next 16 days are 0.9m 18s and forecast to arrive on Thursday (Aug 13) at 6PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 8s period and expected on Thursday (Aug 13) at 3AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Fri 7th Aug) | 2.5ft (0.8m) 13s |
| Best Surf | 3PM (Sun 9th Aug) | 3.5ft (1.0m) 16s |
| Most Powerful | 6PM (Thu 13th Aug) | 3ft (0.9m) 18s |
Table - best surf conditions forecast for Catlins River Mouth over the next 16 days.
Short Range ForecastLight rain (total 5mm), mostly falling on Sat night. Mild temperatures (max 8°C on Sat afternoon, min 2°C on Thu night). Winds increasing (light winds from the NNE on Thu morning, fresh winds from the ENE by Sat night). | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Sun morning. Very mild (max 10°C on Tue afternoon, min 7°C on Sun night). Winds increasing (light winds from the E on Mon night, fresh winds from the NE by Tue night). | ||||||||||||||||||||
Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | |||||||||||||||
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) | S 9 | SE 11 | S 13 | S 10 | S 10 | S 10 | S 17 | SSW 15 | SSW 18 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | S 19 | SSW 18 | SSW 17 | ENE 7 | ENE 7 | E 8 | ENE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 364 | 198 | 215 | 257 | 233 | 179 | 220 | 252 | 178 | 310 | 487 | 339 | 330 | 246 | 270 | 246 | 221 | 142 | 404 | 299 | 336 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross-on | cross-off | cross-off | cross-off | cross | cross-on | cross | cross | cross | cross | cross | cross-off |
High Tide | 8:46PM2.20m | 9:26AM2.23m | 9:55PM2.19m | 10:36AM2.25m | 11:04PM2.22m | 11:42AM2.30m | 00:08AM2.28m | 12:45PM2.37m | 1:08AM2.37m | 1:42PM2.44m | 2:03AM2.45m | 2:35PM2.50m | 2:53AM2.52m | ||||||||
Low Tide | 2:38PM1.00m | 3:08AM0.98m | 3:41PM1.03m | 4:15AM0.96m | 4:50PM1.01m | 5:23AM0.89m | 6:00PM0.94m | 6:28AM0.78m | 7:03PM0.83m | 7:27AM0.65m | 7:57PM0.71m | 8:21AM0.55m | 8:46PM0.63m | ||||||||
 | |  |  | | |  | |  |  | | | | | | | |  | | | | |
 | 7:54 | — | — | 7:54 | — | — | 7:52 | — | — | 7:50 | — | — | 7:50 | — | — | 7:48 | — | — | 7:47 | — | — |
 | — | 5:37 | — | — | 5:38 | — | — | 5:40 | — | — | 5:42 | — | — | 5:43 | — | — | 5:44 | — | — | 5:45 | — |
mm | — | — | — | — | — | — | — | — | 5 | 2 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 4 | 5 | 5 | 4 | 7 | 7 | 7 | 8 | 8 | 9 | 9 | 8 | 8 | 9 | 7 | 9 | 10 | 9 | 10 | 11 | 9 |
Feels °C | 1 | 2 | 1 | 0 | 3 | 3 | 3 | 4 | 3 | 7 | 7 | 4 | 4 | 6 | 5 | 2 | 3 | 2 | 4 | 6 | 6 |
Swell 1 Height (m) Direction Period (s) | S 9 | SSW 9 | S 9 | S 10 | S 10 | S 10 | S 9 | SSW 15 | SSW 18 | SSW 16 | E 6 | E 7 | SE 7 | ESE 7 | ESE 6 | ESE 6 | SSW 17 | E 7 | E 7 | SSW 14 | E 8 |
| kJ | 364 | 173 | 119 | 257 | 233 | 179 | 101 | 252 | 178 | 310 | 86 | 147 | 103 | 76 | 53 | 26 | 221 | 112 | 272 | 81 | 216 |
Swell 2 Height (m) Direction Period (s) | SE 11 | SE 11 | SE 10 | SE 12 | SE 13 | SSW 16 | S 17 | SSE 9 | SSE 9 | SSE 9 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | S 19 | SSW 18 | SE 11 | SSW 16 | SSW 15 | SSW 18 | SSW 16 |
| kJ | 58 | 198 | 117 | 98 | 82 | 146 | 220 | 80 | 45 | 45 | 487 | 339 | 330 | 246 | 270 | 246 | 18 | 142 | 85 | 31 | 223 |
Swell 3 Height (m) Direction Period (s) | SSW 15 | SSE 9 | S 13 | SW 12 | SW 12 | SE 12 | SW 14 | ESE 12 | SSW 14 | SW 13 | SSE 9 | SSE 8 | SSE 8 | SSE 8 | SE 12 | SE 11 | SW 11 | SSW 10 | S 8 | S 9 | SSW 24 |
| kJ | 79 | 90 | 215 | 39 | 23 | 36 | 103 | 15 | 131 | 42 | 52 | 48 | 38 | 26 | 72 | 60 | 31 | 10 | 6 | 2 | 54 |
Wind waves Height (m) Direction Period (s) | — | — | NE 3 | NE 4 | NE 5 | ENE 4 | NE 4 | ENE 4 | ENE 5 | ENE 6 | ENE 6 | — | — | — | ENE 6 | ENE 5 | ENE 6 | ENE 7 | ENE 7 | E 8 | ENE 8 |
| kJ | — | — | 2 | 4 | 10 | 8 | 4 | 5 | 50 | 130 | 155 | — | — | — | 37 | 46 | 182 | 120 | 404 | 299 | 336 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 15 | 0 | 0 | 0 | 0 | 0 | 15 | 15 | 75 | 0 | 10 | 8 | 8 | 15 | 15 | 153 | 153 | 153 | 15 | 0 |
Best forecast wave conditions in Catlins | |||||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Latest Updates
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 Catlins River Mouth 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 Catlins River Mouth Surf forecast
The above surf forecast table for Catlins River Mouth provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Catlins River Mouth can be found by selecting the local surf guide option on the grey menu. Our Catlins River Mouth 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 (Catlins River Mouth) 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 Catlins River Mouth 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.
Catlins River Mouth is 91 km (57 miles) from Dunedin. If you plan a holiday in Catlins, look for hotels and other accommodation in Dunedin. Dunedin has rooms for a wide range of budgets as well as car hire and transport links.
Nearest