Kai-Iwi Surf Break

Lat Long: 39.90° S 174.92° E

Kai-Iwi 48 hour detailed Surf Forecast

Issued: 11 pm 18 Sep 2026 (local time)

Forecast update in  hr  min

Today's Kai-Iwi sea temperature is
13.5°C
0.3° 

Kai-Iwi surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at Kai-Iwi today (19 Sep):

  • Morning surf: Morning surf (19 Sep, local time) - 4.5ft (1.4m), 9s period with W swell.
  • Afternoon surf: Afternoon surf (19 Sep, local time) - 10ft (3.0m), 8s period with W swell.
  • Evening surf: Evening surf (19 Sep, local time) - 8ft (2.5m), 8s period with W swell.

The current surf forecast for Kai-Iwi at 6AM is: 0.7m 15s primary swell from a Southwest direction and 1.2m 8s secondary swell from a West direction (forecast issued at 11:00pm September 18). The wind direction is predicted to be cross-offshore and the swell rating is 2.

Time (NZST) & DateWave HeightWave Period
Morning (19 Sep)4.5ft (1.4m)9s
Afternoon (19 Sep)10ft (3.0m)8s
Evening (19 Sep)8ft (2.5m)8s

Table - waves today at Kai-Iwi. (Swell directed towards the surf break)


Short Range Forecast

Light rain (total 3mm), mostly falling on Sat night. Very mild (max 14°C on Sat morning, min 6°C on Sun night). Winds increasing (calm on Fri night, strong winds from the W by Sat night).

Saturday
19
Sunday
20
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
2
2
2
0
0
0
0
0
0
0
0
!
1
1
2
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.7
SW
16
1.3
WSW
9
1.3
WSW
9
0.7
SW
15
1.4
W
9
2.5
W
8
3
W
8
2.5
W
8
2.5
W
8
2.5
W
8
3.5
W
8
4.5
WSW
9
3.5
WSW
10
3
WSW
10
3
WSW
11
2.5
WSW
11
2.3
WSW
10
Wave Graph
Metric surfscale
Energy kJ
248
283
258
229
298
943
1014
850
767
826
1729
3205
2601
2142
1925
1645
1162
Wind (km/h)
5
N
0
NNW
5
N
15
NNW
25
WNW
30
WNW
30
WNW
35
WNW
30
WNW
35
WNW
35
WNW
40
W
15
SSW
20
W
20
W
10
SSW
10
SSE
Wind State
off
glassy
cross-off
cross-off
cross
cross
cross
cross
cross
cross
cross
cross
on
cross-on
cross-on
on
cross-on
High Tide
3:15AM2.20m
3:48PM2.21m
4:33AM2.12m
5:14PM2.17m
Low Tide
9:10PM1.26m
9:28AM1.24m
10:16PM1.34m
10:41AM1.32m
part cloud
part cloud
clear
clear
part cloud
part cloud
cloud
part cloud
part cloud
cloud
rain showers
rain showers
rain showers
part cloud
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:15
6:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:13
6:14
 mm
1
1
1
Temp °C
10
9
9
8
13
14
14
13
13
13
12
11
9
12
13
12
10
Feels °C
8
8
7
5
8
8
8
7
7
6
5
3
5
7
8
9
7
  • 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 

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Kai-Iwi surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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