Catlins River Mouth surfForecast / Catlins / New Zealand

information circle12 Day Weather and Surf, issued 11 am Wednesday 17 Sep 2025 NZST
Forecast update in hr  min  s Forecast update imminent
Catlins River Mouth surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Catlins River Mouth sea temperature is
10.6° C
(Which is 1.4°C warmer than normal for this time of year)


Best Forecast Surf Conditions for Catlins River Mouth this week:

The surf forecast for Catlins River Mouth over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Sep 17) at 6PM. The primary swell is predicted to be 0.5m and 13s period with a secondary swell of 0.5m and 9s. Another secondary swell of 0.5m and 6s 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 12 days are 3.0m 9s and forecast to arrive on Friday (Sep 19) at 12AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.1m 8s period and expected on Sunday (Sep 21) at 12PM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 6PM (Wed 17th Sep)1.5ft (0.5m) 13s
Best Surf 3AM (Fri 19th Sep)7.5ft (2.3m) 10s
Most Powerful12AM (Fri 19th Sep)10ft (3.0m) 9s

Table - best surf conditions forecast for Catlins River Mouth over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Moderate rain (total 12mm), heaviest on Wed morning. Very mild (max 15°C on Wed morning, min 4°C on Thu night). Winds decreasing (strong winds from the WSW on Thu morning, light winds from the WNW by Fri night).

Days 3-6 Weather Summary Mostly dry. Very mild (max 16°C on Sun afternoon, min 6°C on Sat morning). Wind will be generally light.

Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
2
1
1
0
1
1
3
1
3
2
0
2
3
2
2
2
2
2
2
1
2
Swell
Height Map
Wave Height (m) & direction (?)
0.6
SW
0.6
S
0.5
S
0.8
SSW
1.3
SSW
3
SSW
2.2
S
2.2
S
1.8
S
1.2
S
0.7
SSW
0.9
SSW
0.9
SSW
0.8
SSW
0.8
SSW
0.9
SSW
1.1
SW
0.9
SW
0.9
SW
0.9
SW
0.9
SW
Period(s) (?)149914169101011121816151614141313151514
Wave
Graph
(?)Metric surfscale
Energy kJ (?)167584126479815999191009828407322402372306268362444234322309272
Wind
(km/h)
15
NNW
15
WNW
20
NW
35
W
40
WSW
30
SW
10
NW
20
NE
10
NNW
15
NNW
20
NE
15
N
10
N
10
NW
10
WNW
10
NNW
10
NW
10
NNE
10
NNW
15
NE
10
N
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offcross-
off
offcross-
off
cross-
off
crossoffcrossoffcross-
off
crosscross-
off
cross-
off
offoffcross-
off
offcross-
off
cross-
off
crosscross-
off
High Tide
/ height (m)
11:28AM
2.25
11:53PM
2.25
12:25PM
2.28
12:46AM
2.30
1:14PM
2.32
1:32AM
2.35
1:59PM
2.36
2:14AM
2.39
2:39PM
2.38
2:53AM
2.41
3:16PM
2.40
3:30AM
2.42
3:50PM
2.40
Low Tide
/ height (m)
5:42PM
0.96
6:07AM
0.83
6:38PM
0.89
7:00AM
0.76
7:26PM
0.82
7:46AM
0.72
8:08PM
0.77
8:28AM
0.71
8:47PM
0.76
9:08AM
0.74
9:25PM
0.78
9:45AM
0.79
10:01PM
0.83
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Sunrise6:41--6:39--6:37--6:35--6:33--6:31--6:28--
Sunset-6:30--6:31--6:32--6:34--6:36--6:37--6:37-
mod rain
rain showers
part cloud
part cloud
rain showers
rain showers
part cloud
part cloud
part cloud
clear
clear
part cloud
part cloud
clear
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
cloud
Rain (mm)
63--12---------------
Temp. °C151312986886121212141611151610131211
Feels °C (?)12971-2-24237761112912139989
  • 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

Eyeball surf reportRecent Eyeball Surf Reports for Catlins

  1. weather stationWind Update The wind is still offshore at Catlins River Mouth (light winds from the NW at Nugget Point Automatic Weather Station 8 km from Catlins River Mouth). 1.6m 6s windswell from the WSW with a 1.0m 6s windswell from the SW and a 0.7m 9s swell from the S. 3 swells combining so expect closeout sets.

    Catlins River Mouth
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1 h 25 min ago

15 km/h
NW
Offshore
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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 12 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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