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Catlins River Mouth Surf Forecast
/ Catlins (9 surf breaks) /
Surf Forecasts:
Catlins River Mouth surfForecast / Catlins / New Zealand
48hr Weather and Surf, issued 11 am Monday 18 May 2026 NZSTForecast update in hr min s Forecast update imminent
Catlins River Mouth surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Catlins River Mouth sea temperature is
12.9° C
(Which is 2.6°C warmer than normal for this time of year)How big are the waves at Catlins River Mouth today?
The current surf forecast for Catlins River Mouth at 2PM is: 0.7m 16s primary swell from a South-southwest direction and 0.4m 9s secondary swell from a South direction (forecast issued at 11:00am May 18). The wind direction is predicted to be glassy and the swell rating is 2.
| Time (NZST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | 1.5ft (0.5m) | 17s |
| Afternoon (18 May) | 2.5ft (0.7m) | 16s |
| Evening (18 May) | 2ft (0.6m) | 16s |
Table - waves today at Catlins River Mouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Very mild (max 13°C on Wed night, min 6°C on Mon morning). Wind will be generally light. | ||||||||||||||||||||||||
Mon 18 | Tuesday 19 | Wednesday 20 | Thu 21 | |||||||||||||||||||||
9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SW 14 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SSW 14 | SSW 14 | S 19 | SSW 19 | S 19 | SSW 18 | SSW 18 | SSW 18 | |
172 | 255 | 223 | 220 | 162 | 148 | 162 | 150 | 142 | 140 | 97 | 57 | 53 | 73 | 52 | 47 | 20 | 19 | 28 | 72 | 29 | 31 | 61 | 61 | |
Wind (km/h) | ||||||||||||||||||||||||
off | glassy | glassy | glassy | glassy | cross-off | cross-off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | off | |
High Tide | 4:06PM2.56m | 4:26AM2.49m | 5:03PM2.52m | 5:22AM2.44m | 6:01PM2.45m | |||||||||||||||||||
Low Tide | 9:52AM0.64m | 10:21PM0.75m | 10:46AM0.64m | 11:16PM0.78m | 11:43AM0.67m | 00:13AM0.82m | ||||||||||||||||||
 | | |  | | | | | |  |  |  | |  | | | | | | | | | | | |
 | 7:58 | — | — | — | — | — | — | 8:00 | — | — | — | — | — | — | — | 8:00 | — | — | — | — | — | — | — | 8:02 |
 | — | — | 5:15 | — | — | — | — | — | — | — | 5:14 | — | — | — | — | — | — | — | 5:13 | — | — | — | — | 5:12 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 6 | 7 | 8 | 7 | 7 | 7 | 7 | 6 | 6 | 7 | 8 | 8 | 8 | 9 | 10 | 10 | 10 | 11 | 11 | 10 | 10 | 9 | 9 | 13 |
3 | 5 | 6 | 5 | 6 | 5 | 5 | 3 | 3 | 5 | 5 | 5 | 4 | 5 | 5 | 5 | 5 | 7 | 7 | 7 | 6 | 5 | 5 | 8 | |
Swell 1 Height (m) Direction Period (s) | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SW 14 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SSW 14 | WSW 13 | SW 12 | SW 12 | SW 12 | ENE 4 | SSW 18 | ENE 4 |
 kJ | 172 | 255 | 223 | 220 | 162 | 148 | 162 | 150 | 142 | 140 | 97 | 57 | 53 | 73 | 52 | 47 | 20 | 16 | 25 | 23 | 23 | 3 | 61 | 8 |
Swell 2 Height (m) Direction Period (s) | S 9 | S 9 | S 9 | SSW 8 | S 8 | S 8 | ENE 10 | ENE 10 | SSE 11 | ENE 9 | ENE 9 | SW 13 | WSW 13 | ENE 3 | E 11 | E 11 | WSW 13 | SSW 14 | S 19 | SSW 19 | S 19 | SSW 18 | SW 12 | SSW 18 |
| kJ | 27 | 25 | 25 | 24 | 12 | 12 | 9 | 9 | 12 | 9 | 9 | 27 | 17 | 1 | 9 | 9 | 17 | 19 | 28 | 72 | 29 | 31 | 5 | 61 |
Swell 3 Height (m) Direction Period (s) | SW 12 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | S 8 | S 8 | ENE 9 | S 11 | S 10 | ENE 9 | E 9 | E 9 | ENE 4 | ENE 4 | E 10 | E 10 | E 10 | E 10 | ENE 3 | WSW 12 | E 9 | SW 11 |
| kJ | 24 | 10 | 10 | 10 | 10 | 9 | 5 | 5 | 9 | 9 | 8 | 9 | 2 | 2 | 1 | 1 | 8 | 8 | 8 | 8 | 1 | 14 | 2 | 5 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | NE 3 | NE 3 | — | — | — | — | — | — | — | — | NE 4 | NE 4 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 2 | — | — | — | — | — | — | — | — | 5 | 20 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 3 | 10 | 10 | 3 | 0 | 3 | 10 |
Best forecast wave conditions in Catlins | ||||||||||||||||||||||||
Best forecast wave conditions in New Zealand | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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