Catlins River Mouth Surf Break

Lat Long: 46.48° S 169.72° E

Catlins River Mouth Surf Forecast and Surf Report

Issued: 11 am 22 Aug 2026 (local time)

Forecast update in  hr  min

Today's Catlins River Mouth sea temperature is
10.9° C
1.8° 

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 22 Aug 2026:

  • Best quality surf: Sunday 23 Aug, 6PM (local time) - 13ft (4.0m), 14s period, SW swell with cross-offshore winds.
  • Most powerful swell: Monday 24 Aug, 3AM (local time) - 18ft (5.5m), 14s period, SW swell with 12,376 kJ wave energy.
  • Next surfable swell (1★+): Saturday 22 Aug, 6PM (local time) - 2ft (0.6m), 16s period with SSW 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 Saturday (Aug 22) at 6PM. The primary swell is predicted to be 0.6m and 16s period with a secondary swell of 0.4m and 9s. 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 5.5m 14s and forecast to arrive on Monday (Aug 24) at 3AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 6s period and expected on Thursday (Aug 27) at 3PM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 6PM (Sat 22nd Aug)2ft (0.6m) 16s
Best Surf 6PM (Sun 23rd Aug)13ft (4.0m) 14s
Most Powerful 3AM (Mon 24th Aug)18ft (5.5m) 14s

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


Short Range Forecast

Light rain (total 7mm), mostly falling on Sun morning. Very mild (max 14°C on Mon afternoon, min 6°C on Sun morning). Mainly strong winds.

Days 4-6 Weather Summary

Light rain (total 6mm), mostly falling on Tue morning. Very mild (max 11°C on Tue morning, min 6°C on Thu night). Winds increasing (calm on Wed night, fresh winds from the NE by Thu night).

Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
1
2
0
0
!
2
3
3
!
!
!
!
3
4
0
1
2
2
2
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.4
SSW
18
0.5
SSW
16
0.6
SSW
18
0.9
SSW
17
3.5
SW
15
5
SW
14
2.2
SSW
17
2.5
SSW
16
2.1
SSW
15
4.5
SW
14
5
SW
14
3.5
SW
14
4
SW
13
2.5
SSW
14
2.2
SSW
13
2
SSW
15
1.8
SSW
14
1.6
S
12
1.2
S
11
0.9
S
10
0.6
S
21
Wave Graph
Metric surfscale
Energy kJ
128
153
243
399
4669
8934
2731
3102
1898
8340
9302
4207
6150
2378
1700
1726
1325
761
329
164
329
Wind (km/h)
15
NNW
15
NNE
10
NNW
50
W
45
W
35
W
30
WNW
25
WNW
30
WNW
30
W
25
WSW
25
W
20
W
15
WSW
5
W
25
ENE
25
NE
20
NNE
5
NNW
10
NNE
0
W
Wind State
off
cross-off
off
cross-off
cross-off
cross-off
cross-off
cross-off
off
cross-off
cross-off
cross-off
cross-off
cross-off
glassy
cross-on
cross
cross-off
off
cross-off
glassy
High Tide
10:44AM2.10m
11:08PM2.07m
11:41AM2.11m
00:02AM2.09m
12:31PM2.14m
00:50AM2.13m
1:15PM2.18m
1:32AM2.19m
1:56PM2.23m
2:09AM2.24m
2:33PM2.29m
2:45AM2.30m
3:09PM2.33m
Low Tide
4:53PM1.24m
5:24AM1.13m
5:56PM1.18m
6:19AM1.06m
6:48PM1.09m
7:06AM0.97m
7:30PM0.99m
7:46AM0.88m
8:06PM0.89m
8:24AM0.80m
8:41PM0.82m
9:00AM0.74m
9:16PM0.77m
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part cloud
part cloud
rain showers
rain showers
part cloud
part cloud
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rain showers
rain showers
part cloud
part cloud
cloud
cloud
part cloud
cloud
light rain
part cloud
light rain
mod rain
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:30
7:28
7:26
7:24
7:22
7:20
7:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:58
5:59
6:00
6:01
6:02
6:04
6:05
 mm
4
2
1
4
2
3
10
11
Temp °C
11
13
10
6
6
9
12
14
13
11
11
9
11
11
8
10
9
9
9
9
10
Feels °C
7
10
8
-5
-5
1
6
8
6
4
5
3
6
6
5
4
3
4
8
7
10
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
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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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