Surf Break

Lat Long: 46.48° S 169.72° E

Catlins River Mouth Surf Forecast and Surf Report

Issued: 12 am 18 Oct 2026 (local time)

Forecast update in  hr  min

Today's Catlins River Mouth sea temperature is
12.3°C
2.8° 

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 17 Oct 2026:

  • Best quality surf: Sunday 18 Oct, 7AM (local time) - 11ft (3.5m), 12s period, SW swell with cross-offshore winds.
  • Most powerful swell: Sunday 18 Oct, 10PM (local time) - 15ft (4.5m), 14s period, SW swell with 7,289 kJ wave energy.
  • Next surfable swell (1★+): Sunday 18 Oct, 7AM (local time) - 11ft (3.5m), 12s period with SW 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 Sunday (Oct 18) at 7AM. The primary swell is predicted to be 3.5m and 12s period with a secondary swell of 2.0m and 13s. 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 14s and forecast to arrive on Sunday (Oct 18) at 10PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 5s period and expected on Tuesday (Oct 20) at 4PM.

Wave TypeTime (NZDT) & Date Wave Height & Period
Next good surf (1 star+) 7AM (Sun 18th Oct)11ft (3.5m) 12s
Best Surf 7AM (Sun 18th Oct)11ft (3.5m) 12s
Most Powerful10PM (Sun 18th Oct)15ft (4.5m) 14s

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


Short Range Forecast

Light rain (total 6mm), mostly falling on Mon afternoon. Very mild (max 17°C on Sun afternoon, min 8°C on Sat night). Winds decreasing (fresh winds from the W on Sun night, light winds from the W by Mon night).

Days 4-6 Weather Summary

Mostly dry. Warm (max 20°C on Wed afternoon, min 12°C on Fri afternoon). Winds decreasing (fresh winds from the W on Tue night, calm by Thu night).

Sunday
18
Monday
19
Tuesday
20
Wednesday
21
Thursday
22
Friday
23
Saturday
24
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
!
3
!
2
!
3
4
3
1
!
1
4
2
0
3
3
1
3
2
4
4
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
3.5
SW
12
3
SSW
13
4.5
SW
14
2.2
SSW
14
3.5
SW
13
1.9
SSW
15
1.9
SSW
14
1.9
SSW
15
1.4
SSW
12
3.5
SW
13
1.6
SW
14
2.5
WSW
13
1.3
SW
8
0.6
SW
13
1.8
WSW
12
0.8
SSW
18
1.4
SSW
16
1.3
SSW
16
1.1
SW
14
2.1
SSW
18
2
SSW
16
Wave Graph
Metric surfscale
Energy kJ
3922
3247
6742
1906
4391
1559
1443
1690
509
4516
975
2329
227
130
889
418
1068
740
476
2894
2110
Wind (km/h)
20
W
25
WSW
25
W
30
W
20
WSW
10
SW
10
W
15
SW
25
WNW
25
W
25
WSW
10
W
15
W
30
WSW
5
W
5
NE
15
ENE
5
NW
20
NNW
25
NW
5
WNW
Wind State
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross-off
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
glassy
cross-on
glassy
cross-off
off
cross-off
High Tide
9:05AM2.06m
9:29PM2.01m
10:07AM2.03m
10:34PM2.01m
11:07AM2.05m
11:32PM2.06m
12:01PM2.10m
00:22AM2.13m
12:48PM2.17m
1:08AM2.23m
1:32PM2.26m
1:51AM2.33m
2:15PM2.34m
2:33AM2.42m
Low Tide
3:17PM1.23m
3:52AM1.15m
4:19PM1.21m
4:53AM1.12m
5:21PM1.16m
5:49AM1.06m
6:16PM1.09m
6:38AM0.98m
7:03PM1.00m
7:25AM0.91m
7:47PM0.91m
8:09AM0.84m
8:29PM0.83m
clear
clear
clear
cloud
light rain
rain showers
part cloud
clear
part cloud
part cloud
part cloud
part cloud
clear
part cloud
part cloud
clear
clear
clear
part cloud
part cloud
heavy rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:41
—
—
6:39
—
—
6:37
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—
6:35
—
—
6:33
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—
6:33
—
—
6:31
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—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
8:10
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—
8:13
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—
8:14
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—
8:15
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—
8:16
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—
8:17
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—
8:20
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 mm
—
—
—
—
5
1
—
—
—
—
—
—
—
—
—
—
—
—
—
—
14
Temp °C
16
17
13
13
12
10
17
16
14
19
20
16
20
18
15
16
15
13
21
22
17
Feels °C
11
11
7
7
8
6
14
13
10
14
14
11
15
12
13
13
12
11
16
16
14
  • 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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