Kai-Iwi Surf Break

Lat Long: 39.90° S 174.92° E

Issued: 5 am 27 Jun 2026 (local time)

Forecast update in  hr  min

Today's Kai-Iwi sea temperature is
13.8° C

Normal for this time of year

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 27 Jun 2026:

  • Best quality surf: Tuesday 30 Jun, 3AM (local time) - 1.5ft (0.5m), 16s period, S swell with cross-offshore winds.
  • Most powerful swell: Saturday 27 Jun, 3PM (local time) - 8ft (2.5m), 8s period, S swell with 1,018 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 30 Jun, 3AM (local time) - 1.5ft (0.5m), 16s period with S 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 Tuesday (Jun 30) at 3AM. The primary swell is predicted to be 0.5m and 16s period with a secondary swell of 0.6m and 6s. Another secondary swell of 0.4m and 3s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Kai-Iwi in the next 16 days are 2.5m 8s and forecast to arrive on Saturday (Jun 27) at 3PM. 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 5s period and expected on Saturday (Jul 04) at 9AM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Tue 30th Jun)1.5ft (0.5m) 16s
Best Surf 3AM (Tue 30th Jun)1.5ft (0.5m) 16s
Most Powerful 3PM (Sat 27th Jun)8ft (2.5m) 8s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 2mm), mostly falling on Sat afternoon. Very mild (max 13°C on Sat afternoon, min 8°C on Mon night). Winds decreasing (fresh winds from the S on Sat night, light winds from the ESE by Mon morning).

Days 4-6 Weather Summary

Mostly dry. Very mild (max 11°C on Tue afternoon, min 7°C on Tue morning). Wind will be generally light.

Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
1
Thursday
2
Friday
3
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
0
0
0
1
0
1
1
0
0
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)
3
S
9
2.5
S
8
2.4
S
8
1.4
SSW
7
1.1
SSW
6
0.4
SW
15
0.4
WSW
14
1.1
S
6
0.4
SSW
17
0.5
S
15
0.5
S
15
0.4
SSW
14
0.4
SSW
13
0.3
SSW
12
0.3
S
11
0.2
S
14
0.7
WNW
4
0.7
WNW
5
0.2
WSW
13
0.4
W
4
0.1
W
15
Wave Graph
Metric surfscale
Energy kJ
1228
1018
724
191
101
60
78
97
92
113
112
66
56
29
21
15
19
22
16
6
5
Wind (km/h)
25
S
25
S
25
SSE
10
SSE
10
SE
15
ESE
10
ESE
15
SSE
15
ESE
10
E
10
ESE
5
NNE
5
N
5
W
10
N
10
N
10
NNW
10
NNW
10
N
20
NNW
15
N
Wind State
cross-on
cross-on
cross-on
cross-on
cross
cross
cross
cross-on
cross
cross-off
cross
off
off
cross
off
cross-off
cross-off
cross-off
off
cross-off
cross-off
High Tide
9:01PM2.51m
9:18AM2.45m
9:39PM2.59m
9:58AM2.51m
10:15PM2.65m
10:35AM2.56m
10:50PM2.70m
11:11AM2.60m
11:26PM2.73m
11:46AM2.61m
00:01AM2.73m
12:23PM2.60m
00:38AM2.71m
Low Tide
2:48PM1.02m
3:13AM1.05m
3:29PM0.97m
3:51AM1.01m
4:07PM0.93m
4:28AM0.97m
4:44PM0.90m
5:03AM0.95m
5:19PM0.88m
5:39AM0.94m
5:55PM0.88m
6:17AM0.93m
6:31PM0.89m
cloud
light rain
cloud
part cloud
rain showers
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
cloud
part cloud
part cloud
part cloud
part cloud
cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:41
7:41
7:41
7:41
7:41
7:41
7:41
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:02
5:04
5:04
5:05
5:05
5:06
5:06
 mm
1
1
Temp °C
12
13
12
12
11
10
12
12
10
10
11
8
10
11
10
10
11
10
12
13
12
Feels °C
8
9
7
10
9
6
9
8
7
6
8
6
8
9
7
7
8
7
9
9
9
Swell 1
Height (m)
Direction
Period (s)
1.9
SSW
9
1.8
SSW
8
0.2
S
16
1.4
SSW
7
1.1
SSW
6
0.9
SSW
6
0.9
SSW
6
0.4
WSW
13
0.8
S
6
0.5
S
15
0.5
S
15
0.4
SSW
14
0.4
SSW
13
0.3
SSW
12
0.3
S
11
0.4
WSW
4
0.2
S
10
0.1
SW
14
0.5
W
4
0.4
W
4
0.1
W
9
Energy kJ
541
446
19
191
101
60
58
70
43
113
112
66
56
29
21
6
7
8
10
6
1
Swell 2
Height (m)
Direction
Period (s)
0.3
WSW
13
0.2
S
17
0.1
SW
17
0.4
WSW
9
0.4
WSW
9
0.4
SW
15
0.4
WSW
14
0.1
S
10
0.4
SSW
17
0.4
S
5
0.4
SW
14
0.2
WSW
14
0.2
WSW
9
0.2
WSW
8
0.2
WSW
4
0.2
S
10
0.1
S
14
0.1
S
9
0.2
WSW
13
0.1
SW
12
0.1
SW
11
Energy kJ
34
23
11
32
25
55
78
2
92
9
53
20
7
7
1
8
4
2
16
6
5
Swell 3
Height (m)
Direction
Period (s)
0.1
W
17
0.3
SSW
16
0.4
SW
16
0.3
WSW
9
0.2
S
11
0.1
SW
18
0.4
SW
13
0.4
SW
14
0.2
S
4
0.2
ESE
3
0.2
WSW
13
0.2
WSW
13
0.1
SW
14
0.2
S
14
0.1
SW
13
0.1
S
14
0.1
S
8
0.1
W
9
0.1
W
15
Energy kJ
6
49
63
15
9
13
43
52
1
1
18
18
7
15
6
4
1
2
4
Wind waves
Height (m)
Direction
Period (s)
3
S
9
2.5
S
8
2.4
S
8
0.4
ESE
3
1.1
S
6
0.2
ESE
3
0.4
SE
3
0.4
SE
3
0.3
NNW
3
0.7
WNW
4
0.7
WNW
5
0.3
NNW
3
0.2
NNW
2
0.7
NW
4
Energy kJ
1228
1018
724
4
97
1
2
2
1
19
22
2
1
20
Nearest Offshore or Glassy
Rating
(10 max)
4
4
2
1
1
1
1
2
2
1
1
1
1
2
1
1
1
1
1
2
2
Distance (km)
122
122
119
11
11
23
20
118
118
0
11
0
0
103
39
109
103
91
120
150
150
Best forecast wave conditions in Wanganui and the Manawatu
Rating
(10 max)
1
1
1
1
1
1
1
1
Best forecast wave conditions in New Zealand
Rating
(10 max)
5
6
5
4
4
4
5
3
4
4
4
4
4
3
4
3
3
2
2
2
2
Header Global
Rating
(10 max)
5
6
5
9
7
5
6
6
6
5
5
5
5
5
5
5
5
6
5
5
5
  • 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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