Surf Forecasts:
Catlins River Mouth surf forecast from 26 Sep 2026:
- Best quality surf: Monday 28 Sep, 7AM (local time) - 13ft (4.0m), 12s period, SW swell with cross-offshore winds.
- Most powerful swell: Tuesday 29 Sep, 7AM (local time) - 16ft (5.0m), 14s period, SW swell with 10,494 kJ wave energy.
- Next surfable swell (1★+): Monday 28 Sep, 7AM (local time) - 13ft (4.0m), 12s period with SW 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 Monday (Sep 28) at 7AM. The primary swell is predicted to be 4.0m and 12s period with a secondary swell of 2.5m and 13s. Another secondary swell of 0.5m and 13s 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 5.0m 14s and forecast to arrive on Tuesday (Sep 29) at 7AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 5s period and expected on Friday (Oct 02) at 1PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Mon 28th Sep) | 13ft (4.0m) 12s |
| Best Surf | 7AM (Mon 28th Sep) | 13ft (4.0m) 12s |
| Most Powerful | 7AM (Tue 29th Sep) | 16ft (5.0m) 14s |
Table - best surf conditions forecast for Catlins River Mouth over the next 16 days.
Short Range ForecastHeavy rain (total 20mm), heaviest during Sat night. Very mild (max 14°C on Sat afternoon, min 5°C on Sat night). Winds increasing (light winds from the WNW on Sat night, fresh winds from the SW by Sun morning). | Days 5-7 Weather SummaryMostly dry. Very mild (max 19°C on Thu afternoon, min 7°C on Tue night). Wind will be generally light. | |||||||||||||||||||
Sat 26 | Sunday 27 | Monday 28 | Tuesday 29 | Wednesday 30 | Thursday 1 | Friday 2 | ||||||||||||||
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) | ESE 13 | SSW 16 | SW 12 | SSW 13 | SW 9 | SW 13 | SW 13 | SSW 14 | SW 14 | SW 14 | SW 14 | SSW 15 | SSW 15 | SSW 14 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 14 |
Wave Graph  | ||||||||||||||||||||
 kJ | 137 | 169 | 604 | 659 | 654 | 5140 | 5612 | 6992 | 10165 | 8633 | 6644 | 2880 | 2416 | 1667 | 1275 | 1177 | 1095 | 857 | 697 | 594 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | off | off | glassy | cross-off | cross-off | off | cross |
High Tide | 2:47AM2.44m | 3:11PM2.44m | 3:28AM2.49m | 3:51PM2.47m | 4:11AM2.50m | 4:32PM2.46m | 4:57AM2.47m | 5:17PM2.41m | 5:49AM2.41m | 6:09PM2.33m | 6:47AM2.33m | 7:10PM2.25m | ||||||||
Low Tide | 8:43PM0.74m | 9:06AM0.70m | 9:23PM0.71m | 9:47AM0.71m | 10:05PM0.70m | 10:30AM0.74m | 10:49PM0.72m | 11:16AM0.80m | 11:38PM0.76m | 12:08PM0.87m | 00:32AM0.82m | 1:04PM0.94m | 1:34AM0.87m | |||||||
 |  |  |  |  | | |  |  |  |  | | | | | | | | | | |
 | — | — | 7:20 | — | — | 6:18 | — | — | 6:16 | — | — | 6:15 | — | — | 6:13 | — | — | 6:11 | — | — |
 | 6:42 | — | — | 7:43 | — | — | 6:45 | — | — | 6:45 | — | — | 6:46 | — | — | 6:49 | — | — | 6:50 | — |
mm | 2 | 9 | 1 | — | 3 | 3 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | 10 |
Temp °C | 14 | 11 | 8 | 8 | 7 | 8 | 9 | 9 | 10 | 11 | 9 | 12 | 16 | 15 | 18 | 19 | 16 | 18 | 20 | 16 |
Feels °C | 11 | 8 | -1 | 0 | -1 | -1 | 1 | 1 | 3 | 5 | 3 | 8 | 13 | 11 | 15 | 17 | 13 | 15 | 18 | 10 |
Swell 1 Height (m) Direction Period (s) | ESE 13 | ESE 12 | SSW 14 | SSW 13 | SSW 14 | SSW 14 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 15 | SSW 15 | SSW 14 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 14 |
| kJ | 137 | 121 | 186 | 659 | 323 | 3385 | 4027 | 4788 | 4584 | 3933 | 3293 | 2880 | 2416 | 1667 | 1275 | 1177 | 1095 | 857 | 697 | 594 |
Swell 2 Height (m) Direction Period (s) | S 9 | SSW 16 | ESE 12 | ESE 12 | SSW 18 | ESE 13 | ESE 13 | SE 12 | SE 12 | ESE 12 | ESE 12 | SE 12 | SE 11 | NE 5 | — | NE 5 | NE 5 | NE 4 | SSW 15 | NE 5 |
| kJ | 57 | 169 | 83 | 56 | 322 | 98 | 66 | 40 | 38 | 14 | 14 | 5 | 5 | 3 | — | 4 | 3 | 2 | 355 | 1 |
Swell 3 Height (m) Direction Period (s) | SW 12 | ENE 6 | SE 16 | SE 15 | ESE 13 | — | — | — | — | — | — | — | — | SE 11 | — | — | — | — | NE 4 | NE 8 |
| kJ | 68 | 7 | 64 | 55 | 120 | — | — | — | — | — | — | — | — | 5 | — | — | — | — | 3 | 2 |
Wind waves Height (m) Direction Period (s) | W 4 | SW 6 | SW 12 | SSW 8 | SW 9 | SW 13 | SW 13 | SSW 14 | SW 14 | SW 14 | SW 14 | — | — | — | — | — | — | NNW 3 | — | — |
| kJ | 18 | 80 | 604 | 327 | 654 | 5140 | 5612 | 6992 | 10165 | 8633 | 6644 | — | — | — | — | — | — | 3 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 8 | 69 | 109 | 109 | 110 | 110 | 168 | 110 | 69 | 161 | 8 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8 |
Best forecast wave conditions in Catlins | ||||||||||||||||||||
Best forecast wave conditions in New Zealand | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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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.
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