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Kai-Iwi Surf Forecast
/ Wanganui-Manawatu (16 surf breaks) /
Surf Forecasts:
Kai-Iwi surfForecast / Wanganui-Manawatu / New Zealand
48hr Weather and Surf, issued 5 am Monday 18 May 2026 NZSTForecast 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
15.3° C
(Which is normal for this time of year)How big are the waves at Kai-Iwi today?
The current surf forecast for Kai-Iwi at 1PM is: 0.4m 14s primary swell from a Southwest direction and 0.2m 9s secondary swell from a South direction (forecast issued at 05:00am May 18). The wind direction is predicted to be cross-onshore.
| Time (NZST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | 1.5ft (0.4m) | 14s |
| Afternoon (18 May) | 1.5ft (0.4m) | 14s |
| Evening (18 May) | 1ft (0.3m) | 13s |
Table - waves today at Kai-Iwi. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Very mild (max 15°C on Mon afternoon, min 8°C on Mon morning). Wind will be generally light. | ||||||||||||||||||||||||
Monday 18 | Tuesday 19 | Wednesday 20 | Thu 21 | |||||||||||||||||||||
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 | 12 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | |
54 | 53 | 52 | 51 | 48 | 45 | 31 | 48 | 43 | 65 | 64 | 62 | 54 | 54 | 53 | 52 | 52 | 51 | 46 | 45 | 45 | 45 | 45 | 27 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | cross | cross-on | cross | cross-off | cross-off | glassy | off | glassy | glassy | on | glassy | off | off | cross-off | off | off | cross | cross | cross-off | cross-off | cross-off | |
High Tide | 11:07AM2.83m | 11:33PM2.92m | 11:57AM2.78m | 00:23AM2.87m | 12:50PM2.69m | |||||||||||||||||||
Low Tide | 5:00AM0.59m | 5:22PM0.57m | 5:50AM0.64m | 6:12PM0.65m | 6:43AM0.73m | 7:03PM0.76m | ||||||||||||||||||
 | |  | | | | | | | | | | | | | | | | | | | | | | |
 | — | 7:20 | — | — | — | — | — | — | — | 7:20 | — | — | — | — | — | — | — | 7:22 | — | — | — | — | — | 7:22 |
 | — | — | — | — | 5:12 | — | — | — | — | — | — | — | 5:10 | — | — | — | — | — | — | — | 5:09 | — | — | 5:09 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 8 | 8 | 8 | 12 | 15 | 13 | 11 | 10 | 9 | 9 | 10 | 13 | 14 | 11 | 10 | 10 | 9 | 9 | 10 | 14 | 15 | 12 | 11 | 10 |
5 | 5 | 5 | 9 | 13 | 10 | 9 | 8 | 7 | 7 | 9 | 12 | 13 | 11 | 9 | 8 | 7 | 7 | 8 | 12 | 13 | 10 | 9 | 7 | |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | WSW 4 | W 4 | W 4 | W 4 | W 4 |
 kJ | 54 | 53 | 52 | 51 | 48 | 45 | 27 | 48 | 43 | 65 | 64 | 62 | 54 | 54 | 53 | 52 | 52 | 51 | 46 | 6 | 10 | 10 | 14 | 14 |
Swell 2 Height (m) Direction Period (s) | SSW 5 | S 9 | S 9 | S 9 | S 9 | S 8 | WSW 18 | WSW 13 | WSW 13 | S 10 | S 10 | S 9 | S 9 | S 9 | S 9 | S 8 | S 8 | S 8 | WSW 4 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 |
| kJ | 2 | 6 | 14 | 6 | 6 | 5 | 31 | 17 | 17 | 8 | 7 | 7 | 6 | 2 | 2 | 1 | 1 | 1 | 3 | 45 | 45 | 45 | 45 | 27 |
Swell 3 Height (m) Direction Period (s) | S 9 | S 4 | S 14 | — | SW 19 | SW 19 | S 8 | SSE 3 | S 8 | — | — | — | — | — | — | — | — | S 8 | S 8 | S 8 | S 7 | S 7 | S 7 | — |
| kJ | 7 | 1 | 4 | — | 15 | 14 | 5 | 1 | 5 | — | — | — | — | — | — | — | — | 1 | 1 | 1 | 1 | 1 | 1 | — |
Wind waves Height (m) Direction Period (s) | ESE 3 | SE 3 | ESE 3 | — | — | SSE 3 | SSE 3 | — | — | — | — | — | — | — | — | WSW 8 | WSW 8 | WNW 3 | — | N 3 | W 5 | W 5 | W 5 | NNW 3 |
| kJ | 4 | 2 | 1 | — | — | 1 | 1 | — | — | — | — | — | — | — | — | 7 | 6 | 1 | — | 1 | 15 | 20 | 27 | 2 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 18 | 0 | 39 | 96 | 39 | 18 | 18 | 18 | 0 | 0 | 0 | 39 | 18 | 18 | 18 | 18 | 18 | 18 | 103 | 124 | 0 | 0 | 39 |
Best forecast wave conditions in Wanganui and the Manawatu | ||||||||||||||||||||||||
Best forecast wave conditions in New Zealand | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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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.
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