Catlins River Mouth Surf Break

Lat Long: 46.48° S 169.72° E

Catlins River Mouth Surf Forecast and Surf Report

Issued: 5 am 09 Aug 2026 (local time)

Forecast update in  hr  min

Today's Catlins River Mouth sea temperature is
10.7° C
1.6° 

Catlins River Mouth surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Catlins River Mouth surf forecast from 8 Aug 2026:

  • Best quality surf: Sunday 16 Aug, 12AM (local time) - 13ft (4.0m), 15s period, SW swell with cross-shore winds.
  • Most powerful swell: Sunday 16 Aug, 12PM (local time) - 15ft (4.5m), 16s period, SW swell with 8,787 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 12 Aug, 12PM (local time) - 8ft (2.4m), 8s period with ENE 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 Wednesday (Aug 12) at 12PM. The primary swell is predicted to be 2.4m and 8s period with a secondary swell of 1.7m and 8s. Another secondary swell of 0.5m and 18s 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 4.5m 16s and forecast to arrive on Sunday (Aug 16) at 12PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 6s period and expected on Wednesday (Aug 12) at 3AM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+)12PM (Wed 12th Aug)8ft (2.4m) 8s
Best Surf12AM (Sun 16th Aug)13ft (4.0m) 15s
Most Powerful12PM (Sun 16th Aug)15ft (4.5m) 16s

Table - best surf conditions forecast for Catlins River Mouth over the next 16 days.


Short Range Forecast

Heavy rain (total 21mm), heaviest during Sun morning. Very mild (max 10°C on Tue afternoon, min 6°C on Mon night). Mainly fresh winds.

Days 4-6 Weather Summary

Some drizzle, heaviest during Fri night. Very mild (max 14°C on Thu afternoon, min 7°C on Fri night). Winds increasing (calm on Thu night, fresh winds from the SW by Fri night).

Sunday
9
Monday
10
Tuesday
11
Wednesday
12
Thursday
13
Friday
14
Saturday
15
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
1
0
0
1
0
0
1
3
3
3
3
2
2
2
4
1
1
!
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.8
SSW
16
1
SSW
16
0.9
SSW
15
0.8
SSW
14
0.7
SW
14
0.5
S
19
0.6
SSW
18
0.6
SSW
16
0.7
SSW
15
1.9
ENE
8
2.3
ENE
8
0.9
SSW
16
1.1
SSW
17
1.1
SSW
16
0.9
SSW
15
0.8
SSW
16
0.7
SSW
18
1.4
SSW
17
1.8
SSW
16
2.5
SSW
16
4
SW
15
Wave Graph
Metric surfscale
Energy kJ
310
487
348
261
189
190
246
214
209
449
748
376
642
575
339
280
352
1108
1739
3062
6468
Wind (km/h)
25
E
25
E
20
SE
10
SE
10
E
20
NE
20
NNE
30
NE
30
NE
20
NNE
10
NE
10
NNW
10
NNW
10
NNE
5
WNW
5
WNW
10
SSW
10
WNW
30
SW
35
SSW
20
SW
Wind State
cross-on
cross-on
on
on
cross-on
cross
cross-off
cross
cross
cross-off
cross
off
cross-off
cross-off
glassy
cross-off
cross
off
cross
cross
cross
High Tide
11:42AM2.30m
00:08AM2.28m
12:45PM2.37m
1:08AM2.37m
1:42PM2.44m
2:03AM2.45m
2:35PM2.50m
2:53AM2.52m
3:24PM2.54m
3:40AM2.55m
4:10PM2.54m
4:26AM2.55m
4:54PM2.51m
Low Tide
6:00PM0.94m
6:28AM0.78m
7:03PM0.83m
7:27AM0.65m
7:57PM0.71m
8:21AM0.55m
8:46PM0.63m
9:10AM0.49m
9:33PM0.59m
9:58AM0.49m
10:19PM0.61m
10:44AM0.55m
11:04PM0.67m
mod rain
mod rain
mod rain
light rain
part cloud
part cloud
part cloud
cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
rain showers
light rain
part cloud
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:50
7:50
7:48
7:47
7:45
7:43
7:41
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:42
5:43
5:44
5:45
5:46
5:47
5:49
 mm
7
6
6
2
1
2
2
Temp °C
8
8
8
8
8
8
8
10
9
9
12
10
13
14
11
11
11
9
7
7
5
Feels °C
2
2
4
6
5
4
2
4
3
5
9
7
11
11
9
10
9
8
-2
-2
-2
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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