Surf Break

Lat Long: 39.90° S 174.92° E

Kai-Iwi Surf Forecast and Surf Report

Issued: 12 am 11 Oct 2026 (local time)

Forecast update in  hr  min

Today's Kai-Iwi sea temperature is
14.5°C
0.9° 

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


Kai-Iwi surf forecast from 10 Oct 2026:

  • Best quality surf: Friday 16 Oct, 1AM (local time) - 7ft (2.2m), 7s period, S swell with glassy winds.
  • Most powerful swell: Friday 16 Oct, 10AM (local time) - 10ft (3.0m), 9s period, S swell with 1,279 kJ wave energy.
  • Next surfable swell (1★+): Sunday 11 Oct, 7AM (local time) - 1.5ft (0.4m), 16s period with SW swell.

Best Forecast Surf Conditions for Kai-Iwi this week:

The surf forecast for Kai-Iwi over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Oct 11) at 7AM. The primary swell is predicted to be 0.4m and 16s period with a secondary swell of 0.5m and 9s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Kai-Iwi in the next 16 days are 3.0m 9s and forecast to arrive on Friday (Oct 16) at 10AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 6s period and expected on Wednesday (Oct 14) at 4AM.

Wave TypeTime (NZDT) & Date Wave Height & Period
Next good surf (1 star+) 7AM (Sun 11th Oct)1.5ft (0.4m) 16s
Best Surf 1AM (Fri 16th Oct)7ft (2.2m) 7s
Most Powerful10AM (Fri 16th Oct)10ft (3.0m) 9s

Table - best surf conditions forecast for Kai-Iwi over the next 16 days.


Short Range Forecast

Light rain (total 8mm), mostly falling on Sat night. Warm (max 20°C on Tue morning, min 11°C on Sun night). Wind will be generally light.

Days 4-6 Weather Summary

Heavy rain (total 26mm), heaviest during Thu night. Warm (max 21°C on Wed morning, min 8°C on Thu night). Winds increasing (calm on Thu night, fresh winds from the S by Fri afternoon).

Sunday
11
Monday
12
Tuesday
13
Wednesday
14
Thursday
15
Friday
16
Saturday
17
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
0
1
1
0
1
2
0
1
0
0
0
1
0
3
0
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)
0.7
WNW
9
1
WNW
9
0.7
W
9
0.7
W
8
0.6
W
7
0.2
WSW
18
0.6
SW
16
0.7
SW
15
0.7
SW
15
0.6
WSW
16
0.6
WSW
14
2.2
W
8
1.8
W
8
1.3
W
8
2.2
S
7
3
S
9
2.5
S
8
2.3
S
8
1.5
S
7
1
S
6
0.4
WSW
11
Wave Graph
Metric surfscale
Energy kJ
80
189
78
64
40
31
208
229
232
162
138
581
368
212
521
1279
949
652
239
84
43
Wind (km/h)
15
NNW
20
W
10
N
0
NNE
10
SW
10
NNE
15
NNW
20
WNW
15
NNW
20
NNW
20
NNW
30
NNW
20
WNW
20
W
5
E
30
SSE
40
S
20
SSE
10
SE
15
S
10
S
Wind State
cross-off
cross
cross-off
glassy
on
off
cross-off
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-on
glassy
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
11:30AM2.76m
11:46PM2.75m
12:05PM2.77m
00:20AM2.71m
12:38PM2.74m
00:53AM2.64m
1:12PM2.68m
1:27AM2.55m
1:47PM2.60m
2:05AM2.45m
2:25PM2.49m
2:48AM2.33m
3:12PM2.37m
3:45AM2.22m
Low Tide
5:21AM0.61m
5:40PM0.66m
5:58AM0.62m
6:16PM0.70m
6:33AM0.67m
6:51PM0.78m
7:08AM0.75m
7:27PM0.89m
7:44AM0.86m
8:05PM1.01m
8:21AM0.98m
8:48PM1.12m
9:03AM1.11m
9:39PM1.22m
rain showers
rain showers
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
clear
cloud
mod rain
part cloud
part cloud
heavy rain
rain showers
cloud
rain showers
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:39
—
—
6:39
—
—
6:37
—
—
6:35
—
—
6:33
—
—
6:31
—
—
6:31
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
7:34
—
—
7:35
—
—
7:36
—
—
7:37
—
—
7:37
—
—
7:38
—
—
7:40
—
 mm
1
1
—
—
—
—
—
—
—
—
—
7
—
—
13
6
—
1
—
—
—
Temp °C
18
16
13
18
18
15
20
19
16
21
21
17
14
15
11
9
10
10
11
12
10
Feels °C
15
13
11
16
16
14
18
16
14
18
18
13
10
11
9
2
1
3
7
8
7
  • Map Icons:
  • Break
  • 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 Kai-Iwi Surf forecast

The above surf forecast table for Kai-Iwi provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Kai-Iwi can be found by selecting the local surf guide option on the grey menu. Our Kai-Iwi 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 (Kai-Iwi) 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 Kai-Iwi 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.

Are you planning a holiday in Wanganui and the Manawatu? If you are looking for accommodation near Kai-Iwi, camping, hotels and holiday cottages in Wanganui and the Manawatu, consider staying in Wanganui which is 12 km (7 miles) away. Other places in and around Wanganui and the Manawatu where you can find information about places to rent, and car hire include Palmerston North which is 78 km (48 miles) away and Levin, 87 km (54 miles) away.

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