Catlins River Mouth Surf Break

Lat Long: 46.48° S 169.72° E

Catlins River Mouth Surf Forecast and Surf Report

Issued: 11 pm 06 Aug 2026 (local time)

Forecast update in  hr  min

Today's Catlins River Mouth sea temperature is
11.0° C
1.9° 

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 6 Aug 2026:

  • Best quality surf: Friday 14 Aug, 6AM (local time) - 11ft (3.5m), 9s period, ENE swell with glassy winds.
  • Most powerful swell: Friday 14 Aug, 6AM (local time) - 11ft (3.5m), 9s period, ENE swell with 1,780 kJ wave energy.
  • Next surfable swell (1★+): Friday 7 Aug, 9AM (local time) - 3.5ft (1.1m), 10s 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 9AM. The primary swell is predicted to be 1.1m and 10s period with a secondary swell of 0.6m and 12s. Another secondary swell of 0.4m and 4s 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 9s and forecast to arrive on Friday (Aug 14) at 6AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 8s period and expected on Thursday (Aug 13) at 6AM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Fri 7th Aug)3.5ft (1.1m) 10s
Best Surf 6AM (Fri 14th Aug)11ft (3.5m) 9s
Most Powerful 6AM (Fri 14th Aug)11ft (3.5m) 9s

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


Short Range Forecast

Heavy rain (total 20mm), heaviest during Sat night. Mild temperatures (max 9°C on Sat night, min 2°C on Thu night). Winds increasing (light winds from the N on Fri afternoon, fresh winds from the E by Sat night).

Days 5-7 Weather Summary

Light rain (total 6mm), mostly falling on Sun night. Very mild (max 12°C on Wed afternoon, min 5°C on Tue night). Winds increasing (light winds from the E on Mon afternoon, fresh winds from the NE by Tue morning).

Friday
7
Saturday
8
Sunday
9
Monday
10
Tuesday
11
Wednesday
12
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
2
2
2
1
0
0
0
0
0
1
1
0
0
0
2
3
1
2
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
S
13
1.1
S
10
1.1
S
10
0.9
S
10
0.6
S
17
0.8
SSW
15
0.5
SSW
18
0.8
SSW
16
1
SSW
16
0.9
SSW
15
0.8
SSW
14
0.7
SW
14
1.3
ESE
8
0.6
SSW
18
2
ENE
7
2.2
ENE
8
2.4
ENE
8
1.3
E
8
1.2
E
8
Wave Graph
Metric surfscale
Energy kJ
215
257
237
146
220
256
178
310
487
348
264
189
207
246
360
572
809
245
201
Wind (km/h)
10
N
10
N
5
N
10
NNW
10
NE
25
ENE
25
E
20
ESE
25
SSW
25
SW
15
SSW
5
E
25
NE
25
NE
30
NE
20
NNE
15
N
10
ENE
10
N
Wind State
cross-off
cross-off
cross-off
cross-off
cross
cross
cross-on
on
cross
cross
cross
cross-on
cross
cross
cross
cross-off
cross-off
cross-on
cross-off
High Tide
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
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
part cloud
cloud
part cloud
part cloud
cloud
cloud
heavy rain
light rain
light rain
mod rain
cloud
part cloud
part cloud
cloud
cloud
cloud
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:54
7:52
7:50
7:50
7:48
7:47
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:38
5:40
5:42
5:43
5:44
5:45
 mm
15
3
2
6
Temp °C
5
4
7
8
7
8
9
7
7
8
8
8
8
9
10
8
11
12
9
Feels °C
1
0
4
4
3
3
4
2
1
3
4
6
2
2
4
2
9
10
7
  • Map Icons:
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  • 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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