Kai-Iwi Surf Break

Lat Long: 39.90° S 174.92° E

Kai-Iwi 48 hour detailed Surf Forecast

Issued: 5 am 21 Aug 2026 (local time)

Forecast update in  hr  min

Today's Kai-Iwi sea temperature is
12.3° C
0.8° 

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 (21 Aug):

  • Morning surf: Morning surf (21 Aug, local time) - 1.5ft (0.4m), 13s period with SW swell.
  • Afternoon surf: Afternoon surf (21 Aug, local time) - 1.5ft (0.4m), 16s period with SW swell.
  • Evening surf: Evening surf (21 Aug, local time) - 5ft (1.5m), 6s period with W swell.

The current surf forecast for Kai-Iwi at 1PM is: 0.4m 14s primary swell from a South-southwest direction and 0.4m 13s secondary swell from a Southwest direction, 1.0m 5s secondary swell from a West direction (forecast issued at 05:00am August 21). The wind direction is predicted to be cross-shore.

Time (NZST) & DateWave HeightWave Period
Morning (21 Aug)1.5ft (0.4m)13s
Afternoon (21 Aug)1.5ft (0.4m)16s
Evening (21 Aug)5ft (1.5m)6s

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


Short Range Forecast

Moderate rain (total 12mm), heaviest on Sun morning. Very mild (max 15°C on Sat afternoon, min 9°C on Fri night). Winds increasing (light winds from the NW on Fri morning, fresh winds from the WNW by Sun morning).

Friday
21
Saturday
22
Sunday
23
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
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
Rating
(10 max)
1
1
1
0
0
0
1
1
1
1
1
0
0
0
0
0
0
1
0
0
0
!
!
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.4
SW
14
0.4
SW
14
0.4
SW
13
0.4
SSW
15
0.4
SW
16
1.3
W
6
1.5
W
6
1.7
W
7
1.7
W
7
1.7
W
7
1.7
W
7
1.5
W
6
1.5
W
6
1.2
WNW
6
1.4
WNW
6
1.6
WNW
6
1.9
WNW
8
2.4
WNW
9
3
W
10
3.5
W
10
3.5
W
10
3.5
W
10
3.5
W
10
Wave Graph
Metric surfscale
Energy kJ
47
46
45
74
65
104
164
255
254
247
248
181
167
108
128
197
452
860
1935
2402
2521
2457
2326
Wind (km/h)
15
NNW
15
NW
10
NW
15
WNW
20
WNW
20
NW
15
NW
20
NW
20
NNW
20
NW
20
NNW
25
NW
20
WNW
20
NNW
25
NNW
25
NNW
30
NNW
30
NNW
35
WNW
35
WNW
35
WNW
30
WNW
30
WNW
Wind State
cross-off
cross-off
cross-off
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross
cross
cross
cross
High Tide
3:55AM2.21m
4:34PM2.20m
5:14AM2.15m
6:05PM2.19m
6:35AM2.16m
7:17PM2.26m
Low Tide
10:10AM1.24m
10:58PM1.35m
11:28AM1.31m
00:26AM1.35m
12:55PM1.28m
cloud
cloud
cloud
cloud
cloud
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
part cloud
cloud
part cloud
clear
part cloud
mod rain
rain showers
clear
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:00
6:58
6:58
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:45
5:46
5:47
 mm
8
4
Temp °C
10
10
10
13
13
12
10
10
9
9
11
14
15
13
12
13
13
14
13
13
13
12
11
Feels °C
7
7
7
9
9
8
7
6
4
4
6
9
10
9
7
8
7
8
7
6
5
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 

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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