Catlins River Mouth Surf Break

Lat Long: 46.48° S 169.72° E

Catlins River Mouth Surf Forecast and Surf Report

Issued: 11 pm 27 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 27 Aug 2026:

  • Best quality surf: Saturday 29 Aug, 3PM (local time) - 13ft (4.0m), 11s period, WSW swell with cross-offshore winds.
  • Most powerful swell: Monday 31 Aug, 9AM (local time) - 20ft (6.0m), 15s period, SW swell with 14,821 kJ wave energy.
  • Next surfable swell (1★+): Friday 28 Aug, 9AM (local time) - 4ft (1.2m), 11s 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 28) at 9AM. The primary swell is predicted to be 1.2m and 11s period with a secondary swell of 1.2m and 9s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Catlins River Mouth in the next 16 days are 6.0m 15s and forecast to arrive on Monday (Aug 31) at 9AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 5s period and expected on Thursday (Sep 03) at 9PM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Fri 28th Aug)4ft (1.2m) 11s
Best Surf 3PM (Sat 29th Aug)13ft (4.0m) 11s
Most Powerful 9AM (Mon 31st Aug)20ft (6.0m) 15s

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


Short Range Forecast

Heavy rain (total 25mm), heaviest during Fri morning. Very mild (max 11°C on Fri afternoon, min 5°C on Sun afternoon). Winds increasing (light winds from the NW on Thu night, strong winds from the WSW by Sun afternoon).

Days 5-7 Weather Summary

Heavy rain (total 33mm), heaviest during Mon afternoon. Very mild (max 12°C on Wed morning, min 5°C on Sun night). Winds decreasing (strong winds from the SW on Mon afternoon, moderate winds from the WNW by Tue afternoon).

Friday
28
Saturday
29
Sunday
30
Monday
31
Tuesday
1
Wednesday
2
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
3
3
2
3
1
!
4
0
0
!
!
!
0
3
2
2
3
1
4
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.9
ENE
8
1.2
S
11
1.3
ENE
9
2.3
WSW
7
1.4
SW
9
4
WSW
11
1.8
SW
16
2.5
SSW
15
3.5
SSW
15
4
SSW
15
6
SW
15
5
SW
14
4.5
SSW
13
3
SSW
11
2.2
S
11
1.3
SSW
15
1.4
SW
15
1.3
SSW
14
1.6
SSW
15
Wave Graph
Metric surfscale
Energy kJ
475
326
277
471
350
3305
1652
3506
6085
6617
14821
9208
5906
2119
1107
785
860
701
1087
Wind (km/h)
10
NNE
10
NW
20
WNW
15
NW
30
WNW
25
W
25
WNW
45
W
45
WSW
35
WSW
30
W
30
WSW
35
SW
25
WSW
25
W
25
WNW
25
WNW
25
WSW
10
NW
Wind State
cross-off
off
off
off
cross-off
cross-off
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross-off
cross-off
cross-off
off
cross-off
off
High Tide
2:45AM2.30m
3:09PM2.33m
3:20AM2.36m
3:44PM2.38m
3:57AM2.40m
4:21PM2.40m
4:36AM2.42m
4:59PM2.40m
5:18AM2.41m
5:40PM2.37m
6:05AM2.37m
6:26PM2.32m
Low Tide
9:00AM0.74m
9:16PM0.77m
9:37AM0.70m
9:53PM0.74m
10:15AM0.70m
10:32PM0.74m
10:56AM0.73m
11:13PM0.76m
11:39AM0.79m
11:59PM0.80m
12:27PM0.87m
00:49AM0.86m
cloud
light rain
rain showers
rain showers
part cloud
part cloud
rain showers
rain showers
rain showers
mod rain
mod rain
heavy rain
rain showers
part cloud
part cloud
part cloud
rain showers
rain showers
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:18
7:16
7:16
7:13
7:11
7:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:05
6:07
6:07
6:08
6:09
6:12
 mm
5
2
1
6
5
6
7
6
14
4
1
1
Temp °C
8
10
11
8
10
11
10
8
6
6
6
7
6
9
10
11
12
11
9
Feels °C
0
8
7
2
3
5
3
-2
-5
-3
-1
0
-3
2
3
5
6
5
6
  • 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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