Surf Break

Lat Long: 46.48° S 169.72° E

Catlins River Mouth Surf Forecast and Surf Report

Issued: 6 am 21 Oct 2026 (local time)

Forecast update in  hr  min

Today's Catlins River Mouth sea temperature is
12.0°C
2.4° 

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 21 Oct 2026:

  • Best quality surf: Friday 23 Oct, 7PM (local time) - 10ft (3.0m), 15s period, SW swell with glassy winds.
  • Most powerful swell: Friday 23 Oct, 7PM (local time) - 10ft (3.0m), 15s period, SW swell with 4,005 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 21 Oct, 10PM (local time) - 8ft (2.5m), 13s 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 Wednesday (Oct 21) at 10PM. The primary swell is predicted to be 2.5m and 13s period with a secondary swell of 1.4m and 13s. Another secondary swell of 0.1m and 22s is also forecast. 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 3.0m 15s and forecast to arrive on Friday (Oct 23) at 7PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 6s period and expected on Friday (Oct 23) at 4PM.

Wave TypeTime (NZDT) & Date Wave Height & Period
Next good surf (1 star+)10PM (Wed 21st Oct)8ft (2.5m) 13s
Best Surf 7PM (Fri 23rd Oct)10ft (3.0m) 15s
Most Powerful 7PM (Fri 23rd Oct)10ft (3.0m) 15s

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


Short Range Forecast

Some drizzle, heaviest during Thu afternoon. Warm (max 21°C on Fri morning, min 11°C on Thu night). Wind will be generally light.

Days 4-6 Weather Summary

Heavy rain (total 37mm), heaviest during Mon night. Warm (max 22°C on Sat morning, min 5°C on Mon night). Mainly fresh winds.

Wednesday
21
Thursday
22
Friday
23
Saturday
24
Sunday
25
Monday
26
Tuesday
27
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
1
2
1
0
2
4
4
3
3
3
4
4
3
1
1
0
0
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)
1.5
SSW
13
1.5
SW
14
1.2
SW
13
0.9
SW
12
0.6
SW
13
0.7
SSW
16
1.6
SSW
17
1.8
SSW
16
1.5
SSW
16
0.8
SSW
18
1.1
SW
14
1.6
SSW
19
2
SSW
16
1.6
SSW
15
1.2
SSW
14
0.7
SW
13
1.6
SE
6
1.7
SE
7
1.6
SW
7
2.3
SSE
9
1.8
SE
9
Wave Graph
Metric surfscale
Energy kJ
820
852
501
260
130
223
1514
1647
1027
418
476
1867
1923
1125
553
180
184
318
219
848
493
Wind (km/h)
20
W
25
SW
10
NW
25
WNW
20
WSW
10
W
5
WNW
10
WSW
5
W
10
NW
10
WNW
25
NW
15
NW
5
SSW
15
NNW
20
NNW
20
S
30
SSE
10
SSE
15
E
25
NNE
Wind State
cross-off
cross
off
cross-off
cross-off
cross-off
off
cross-off
cross-off
off
cross-off
off
off
glassy
cross-off
off
cross-on
on
cross-on
cross-on
cross-off
High Tide
12:01PM2.10m
00:22AM2.13m
12:48PM2.17m
1:08AM2.23m
1:32PM2.26m
1:51AM2.33m
2:15PM2.34m
2:33AM2.42m
2:58PM2.42m
3:17AM2.49m
3:41PM2.47m
4:03AM2.53m
4:25PM2.49m
Low Tide
6:16PM1.09m
6:38AM0.98m
7:03PM1.00m
7:25AM0.91m
7:47PM0.91m
8:09AM0.84m
8:29PM0.83m
8:53AM0.78m
9:11PM0.76m
9:37AM0.75m
9:55PM0.72m
10:22AM0.75m
10:42PM0.69m
clear
clear
part cloud
cloud
rain showers
part cloud
clear
clear
clear
clear
clear
part cloud
cloud
light rain
part cloud
rain showers
mod rain
heavy rain
light rain
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:35
—
—
6:33
—
—
6:33
—
—
6:31
—
—
6:28
—
—
6:26
—
—
6:26
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
8:15
—
—
8:16
—
—
8:17
—
—
8:20
—
—
8:21
—
—
8:22
—
—
8:23
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 mm
—
—
—
—
1
—
—
—
—
—
—
—
—
1
—
1
6
29
1
—
—
Temp °C
19
19
15
15
14
12
21
21
15
22
22
17
19
16
19
20
10
8
8
9
8
Feels °C
14
13
10
10
11
9
18
18
14
17
19
11
15
16
16
17
6
2
4
4
1
  • 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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