Catlins River Mouth Surf Break

Lat Long: 46.48° S 169.72° E

Catlins River Mouth Surf Forecast and Surf Report

Issued: 11 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 9 Aug 2026:

  • Best quality surf: Sunday 16 Aug, 6PM (local time) - 11ft (3.5m), 14s period, SSW swell with cross-offshore winds.
  • Most powerful swell: Sunday 16 Aug, 6PM (local time) - 11ft (3.5m), 14s period, SSW swell with 5,553 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 12 Aug, 12PM (local time) - 7ft (2.2m), 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 2.2m 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 3.5m 14s and forecast to arrive on Sunday (Aug 16) at 6PM. 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 Tuesday (Aug 11) at 9PM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+)12PM (Wed 12th Aug)7ft (2.2m) 8s
Best Surf 6PM (Sun 16th Aug)11ft (3.5m) 14s
Most Powerful 6PM (Sun 16th Aug)11ft (3.5m) 14s

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). Winds increasing (light winds from the ESE on Mon morning, fresh winds from the NE by Tue afternoon).

Days 4-6 Weather Summary

Mostly dry. Very mild (max 12°C on Thu morning, min 7°C on Fri night). Wind will be generally light.

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
2
2
4
3
3
2
2
2
1
3
0
0
0
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
2
ENE
7
2.2
ENE
8
2.4
ENE
8
0.9
SSW
16
1.1
SSW
17
1.2
SSW
16
1.1
SSW
15
0.9
SSW
16
0.7
SW
14
1.4
SSW
16
1.5
SSW
16
1.7
SSW
16
1.8
SSW
16
Wave Graph
Metric surfscale
Energy kJ
310
487
348
261
189
190
246
214
378
581
790
371
689
688
505
392
211
969
1054
1341
1654
Wind (km/h)
30
E
25
ESE
20
SE
10
SE
10
E
25
NE
15
NNE
25
NE
20
NNE
20
NE
15
NNE
10
NW
10
NW
10
S
5
NW
5
NNW
15
NE
5
W
40
SSW
35
SSW
35
S
Wind State
cross-on
cross-on
on
on
cross-on
cross
cross-off
cross
cross-off
cross-off
cross-off
off
off
cross-on
off
cross-off
cross
cross-off
cross-on
cross-on
cross-on
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
light rain
mod rain
light rain
part cloud
part cloud
part cloud
cloud
cloud
cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
light rain
light rain
light rain
<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
9
5
6
1
4
1
3
Temp °C
8
8
8
8
8
8
8
10
8
11
11
10
12
11
9
11
11
9
6
6
6
Feels °C
2
2
6
6
5
3
3
4
3
7
8
7
10
8
8
8
8
7
-3
-4
-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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