Kai-Iwi Surf Break

Lat Long: 39.90° S 174.92° E

Issued: 11 am 29 Jun 2026 (local time)

Forecast update in  hr  min

Today's Kai-Iwi sea temperature is
13.9° 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 29 Jun 2026:

  • Best quality surf: Monday 6 Jul, 6AM (local time) - 10ft (3.0m), 16s period, W swell with cross-offshore winds.
  • Most powerful swell: Monday 6 Jul, 9AM (local time) - 10ft (3.0m), 15s period, WNW swell with 3,907 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 0.5m and 5s. 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 3.0m 15s and forecast to arrive on Monday (Jul 06) at 9AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 5s period and expected on Sunday (Jul 05) at 3AM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Tue 30th Jun)1.5ft (0.5m) 16s
Best Surf 6AM (Mon 6th Jul)10ft (3.0m) 16s
Most Powerful 9AM (Mon 6th Jul)10ft (3.0m) 15s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Very mild (max 11°C on Mon morning, min 6°C on Mon night). Wind will be generally light.

Days 4-6 Weather Summary

Some drizzle, heaviest during Sat night. Very mild (max 14°C on Sat afternoon, min 7°C on Fri night). Winds increasing (light winds from the NW on Thu afternoon, fresh winds from the N by Sat night).

Monday
29
Tuesday
30
Wednesday
1
Thursday
2
Friday
3
Saturday
4
Sunday
5
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
1
0
1
1
0
0
0
0
0
0
0
0
0
0
1
1
3
4
Swell
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
WSW
14
0.4
SSW
17
0.5
S
15
0.5
S
15
0.5
S
14
0.4
SSW
13
0.3
SSW
12
0.2
S
14
0.2
S
14
0.2
S
10
0.1
SW
13
0.2
WSW
12
0.2
WSW
11
0.3
WSW
10
0.4
W
8
1
W
9
1.8
W
11
1.4
W
11
1.7
W
12
1.3
WSW
14
Wave Graph
Metric surfscale
Energy kJ
51
71
95
116
113
97
55
29
16
14
7
7
14
12
18
21
162
741
442
776
682
Wind (km/h)
10
SE
10
SE
15
E
10
E
5
ESE
5
NNE
5
NNE
5
SW
10
NNE
10
N
5
NW
10
N
10
N
15
NNW
15
N
25
N
25
NNW
30
N
20
NW
10
NW
5
NE
Wind State
cross
cross-on
cross-off
cross-off
cross
off
off
glassy
off
off
cross-off
off
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
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
1:01PM2.57m
1:16AM2.68m
1:40PM2.52m
1:55AM2.62m
Low Tide
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
6:56AM0.94m
7:09PM0.92m
7:37AM0.95m
7:50PM0.96m
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
part cloud
part cloud
part cloud
light rain
heavy rain
light rain
part cloud
<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>
5:04
5:05
5:05
5:06
5:06
5:07
5:07
 mm
1
31
5
Temp °C
11
11
9
9
11
9
10
11
9
11
13
9
12
13
9
13
14
13
13
13
11
Feels °C
8
8
5
6
8
7
8
9
6
8
11
6
8
9
4
7
8
7
9
11
10
Swell 1
Height (m)
Direction
Period (s)
0.8
S
6
0.4
WSW
14
0.7
S
6
0.5
S
15
0.5
S
15
0.5
S
14
0.4
SSW
13
0.3
SSW
12
0.2
S
11
0.2
WSW
7
0.2
WSW
7
0.3
WNW
4
0.2
WSW
12
0.2
WSW
11
0.3
WSW
10
0.4
W
8
1
W
9
1.8
W
11
1.4
W
11
1.7
W
12
1.6
W
11
Energy kJ
39
71
30
116
113
97
55
29
9
5
5
3
14
12
18
21
162
741
442
776
588
Swell 2
Height (m)
Direction
Period (s)
0.4
SW
14
0.2
S
10
0.4
SSW
17
0.4
SW
14
0.3
SW
14
0.2
WSW
9
0.2
WSW
8
0.2
WSW
8
0.2
WSW
7
0.2
S
10
0.2
S
10
0.1
SW
13
0.1
S
8
0.1
S
8
0.1
SW
15
0.2
WSW
12
0.6
WSW
11
0.2
WSW
20
0.4
SW
18
0.2
WSW
16
1.3
WSW
14
Energy kJ
51
8
95
52
33
8
7
6
5
8
7
7
1
1
8
15
95
38
81
26
682
Swell 3
Height (m)
Direction
Period (s)
0.3
WSW
9
0.1
SW
18
0.4
SW
13
0.3
S
5
0.2
WSW
10
0.2
WSW
14
0.2
WSW
13
0.2
WSW
13
0.2
S
14
0.2
S
14
0.1
S
13
0.1
S
9
0.1
W
16
0.1
SW
15
0.1
W
22
0.3
NW
6
0.9
NW
10
Energy kJ
15
13
43
4
9
20
18
18
16
14
3
2
5
8
10
5
167
Wind waves
Height (m)
Direction
Period (s)
0.8
S
6
0.5
ESE
3
0.4
ESE
3
0.3
SE
3
0.2
ESE
3
0.6
WNW
4
0.4
WNW
4
0.7
NW
5
0.9
NW
4
0.8
N
4
1
NNW
5
1
N
5
1.3
NNW
6
0.4
NNE
3
Energy kJ
43
6
4
1
1
12
8
30
29
26
45
42
115
3
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
2
1
1
1
1
3
1
2
2
2
2
3
4
Distance (km)
39
39
61
0
11
0
0
18
91
91
103
91
91
150
11
150
150
150
13
0
0
Best forecast wave conditions in Wanganui and the Manawatu
Rating
(10 max)
1
1
1
1
1
1
1
2
3
4
Best forecast wave conditions in New Zealand
Rating
(10 max)
4
4
3
5
4
4
4
4
4
4
3
3
3
3
2
2
2
4
4
5
9
Header Global
Rating
(10 max)
7
5
5
5
5
5
5
5
4
5
7
5
9
5
6
6
7
9
7
5
9
  • 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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