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Surf Forecasts:

Kai-Iwi surfForecast / Wanganui-Manawatu / New Zealand

information circle16 Day Weather and Surf, issued 12 am Monday 16 Mar 2026 NZDT
Forecast update in hr  min  s Forecast update imminent
Kai-Iwi surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Kai-Iwi sea temperature is
18.5° C
 (Which is normal for this time of year)

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 Monday (Mar 16) at 7AM. The primary swell is predicted to be 1.0m and 8s period with a secondary swell of 0.5m and 14s. 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 1.7m 8s and forecast to arrive on Monday (Mar 16) at 4PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Monday (Mar 16) at 10AM.

Wave TypeTime (NZDT) & Date Wave Height & Period
Next good surf (1 star+) 7AM (Mon 16th Mar)3.5ft (1.0m) 8s
Best Surf 7AM (Mon 16th Mar)3.5ft (1.0m) 8s
Most Powerful 4PM (Mon 16th Mar)5.5ft (1.7m) 8s

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

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table

Short Range Forecast Mostly dry. Warm (max 20°C on Tue morning, min 12°C on Sun night). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Warm (max 21°C on Sat morning, min 13°C on Thu night). Wind will be generally light.

Monday
16
Tuesday
17
Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sun
22
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
2
0
0
2
1
0
1
0
0
0
0
0
1
0
0
0
0
0
1
1
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.4
WSW
0.7
SW
1.7
W
1.2
W
0.4
SW
0.4
SW
0.3
SW
0.7
W
0.8
W
0.8
WSW
0.5
WSW
0.6
WSW
0.6
W
0.6
W
0.6
W
1
SSW
0.3
SW
0.4
SW
0.4
SW
0.4
SW
0.4
SW
Period(s) (?)91888161514555910109861313131616
Wave
Graph
(?)Metric surfscale
Energy kJ (?)2873193321826456322533394875675547902844466262
Wind
(km/h)
5
NNW
25
NW
25
WNW
10
N
5
NNE
10
SSW
10
N
10
NW
15
W
5
NNE
15
SE
15
SSW
5
ENE
5
SE
15
SSW
15
ESE
10
E
10
SSW
5
NNW
5
N
15
W
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		cross-
off		crossoffglassoncross-
off		cross-
off		cross-
on		offcrossonglasscrossoncrosscross-
off		onglassoffcross
High Tide
/ height (m)
9:31AM
2.49
9:56PM
2.46
10:10AM
2.63
10:36PM
2.60
10:48AM
2.76
11:13PM
2.72
11:25AM
2.86
11:49PM
2.81
12:02PM
2.91
12:26AM
2.86
12:40PM
2.91
1:04AM
2.86
1:20PM
2.85
Low Tide
/ height (m)
3:25AM
1.00
3:49PM
0.93
4:06AM
0.84
4:27PM
0.77
4:43AM
0.70
5:03PM
0.63
5:20AM
0.59
5:40PM
0.54
5:57AM
0.54
6:18PM
0.50
6:36AM
0.54
6:58PM
0.53
7:17AM
0.61
Monday
16
Tuesday
17
Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sun
22
Sunrise-7:16--7:18--7:18--7:20--7:20--7:22--7:24-
Sunset--7:38--7:37--7:36--7:35--7:32--7:30--7:30
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
part cloud
clear
part cloud
clear
clear
rain showers
part cloud
clear
Rain (mm)
------------------1--
Temp. °C141919142019152019152020161920162121172019
Feels °C (?)131515111918151817151818161719132019181817
  • 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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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.

View detailed surf forecast for Kai-Iwi at:
surf-forecast.com

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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