Catlins River Mouth Surf Break

Lat Long: 46.48° S 169.72° E

Catlins River Mouth 48 hour detailed Surf Forecast

Issued: 11 am 21 Aug 2026 (local time)

Forecast update in  hr  min

Today's Catlins River Mouth sea temperature is
11.2° C
2.1° 

Catlins River Mouth surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at Catlins River Mouth today (21 Aug):

  • Morning surf: Morning surf (21 Aug, local time) - 2.5ft (0.8m), 14s period with SSW swell.
  • Afternoon surf: Afternoon surf (21 Aug, local time) - 3ft (0.9m), 10s period with SSW swell.
  • Evening surf: Evening surf (21 Aug, local time) - 2.5ft (0.8m), 10s period with S swell.

The current surf forecast for Catlins River Mouth at 6PM is: 0.9m 10s primary swell from a South direction and 0.5m 14s secondary swell from a Southwest direction, 0.1m 4s secondary swell from a Northeast direction (forecast issued at 11:00am August 21). The wind direction is predicted to be cross-offshore and the swell rating is 2.

Time (NZST) & DateWave HeightWave Period
Morning (21 Aug)2.5ft (0.8m)14s
Afternoon (21 Aug)3ft (0.9m)10s
Evening (21 Aug)2.5ft (0.8m)10s

Table - waves today at Catlins River Mouth. (Swell directed towards the surf break)


Short Range Forecast

Moderate rain (total 10mm), heaviest on Sun morning. Very mild (max 13°C on Sat afternoon, min 6°C on Sun morning). Winds increasing (light winds from the N on Sat afternoon, strong winds from the W by Sun morning).

Fri
21
Saturday
22
Sunday
23
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
Rating
(10 max)
2
1
2
2
1
1
1
1
1
0
1
2
2
2
2
2
1
0
2
!
!
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.8
SSW
14
1
SSW
10
0.9
SSW
10
0.9
S
10
0.8
S
10
0.7
S
10
0.6
S
10
0.6
S
10
0.4
SSW
18
0.5
SSW
19
0.5
SSW
16
0.6
SSW
16
0.6
SSW
17
0.6
SSW
18
0.6
SSW
18
0.8
SSW
17
0.9
SSW
17
1.1
SSW
16
3
SW
16
4
SW
15
4
SSW
14
Wave Graph
Metric surfscale
Energy kJ
264
218
163
158
125
96
74
69
109
201
153
214
237
243
243
344
399
651
4791
6574
6493
Wind (km/h)
15
NNW
15
NNW
15
NNW
15
NNW
10
N
10
NNW
15
NNW
15
NNW
10
NNW
15
NNW
15
NNE
10
N
10
NNW
10
NNW
10
NW
20
WNW
25
WNW
50
W
45
W
45
WSW
40
WSW
Wind State
off
cross-off
cross-off
cross-off
cross-off
off
off
off
off
cross-off
cross-off
cross-off
cross-off
off
off
off
off
cross-off
cross-off
cross-off
cross-off
High Tide
9:41AM2.12m
10:07PM2.08m
10:44AM2.10m
11:08PM2.07m
11:41AM2.11m
Low Tide
3:45PM1.24m
4:22AM1.17m
4:53PM1.24m
5:24AM1.13m
5:56PM1.18m
clear
cloud
cloud
cloud
cloud
cloud
cloud
cloud
clear
cloud
cloud
part cloud
part cloud
cloud
cloud
clear
light rain
rain showers
rain showers
light rain
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:31
7:30
7:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:57
5:58
5:59
 mm
2
3
1
2
1
Temp °C
7
8
10
10
9
9
8
7
8
11
13
12
9
8
9
9
8
6
6
6
6
Feels °C
3
4
6
6
6
5
4
3
4
6
9
10
6
5
6
4
2
-5
-4
-5
-4
  • 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
How to use the Wavefinder 

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