Using Surf-Forecast’s Historical Surf Data To Find The Most Consistent Waves On Earth
Using our statistical data for 7000 spots dating back to 2006, we can find those waves that break the most, with the best winds.
Surf Forecasts:
Kai-Iwi surfForecast / Wanganui-Manawatu / New Zealand
48hr Weather and Surf, issued 12 pm Wednesday 31 Dec 2025 NZDTForecast 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
18.8° C
(Which is 1.8°C warmer than normal for this time of year)How big are the waves at Kai-Iwi today?
The current surf forecast for Kai-Iwi at 7PM is: 0.4m 10s primary swell from a West-northwest direction and 0.6m 6s secondary swell from a South direction (forecast issued at 12:00pm December 31). The wind direction is predicted to be offshore.
| Time (NZDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (31 Dec) | 5ft (1.5m) | 8s |
| Afternoon (31 Dec) | 3ft (0.9m) | 7s |
| Evening (31 Dec) | 1.5ft (0.4m) | 10s |
Table - waves today at Kai-Iwi. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 31 | Thursday 01 | Friday 02 | Saturday 03 | |||||||||||||||||||||
| 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 8 | 7 | 7 | 10 | 10 | 10 | 9 | 8 | 8 | 8 | 8 | 9 | 8 | 8 | 7 | 7 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 245 | 112 | 64 | 35 | 34 | 36 | 32 | 40 | 108 | 206 | 235 | 505 | 305 | 193 | 163 | 107 | 112 | 60 | 47 | 36 | 54 | 52 | 38 | 39 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | off | off | off | cross- off | cross- off | cross- off | cross | cross- off | cross | cross- off | cross- off | cross- off | cross- off | cross | cross- on | on | on | glass | glass | cross- off | cross |
High Tide / height (m) | 8:03AM 2.50 | 8:22PM 2.54 | 9:11AM 2.62 | 9:32PM 2.60 | 10:09AM 2.75 | 10:31PM 2.69 | ||||||||||||||||||
Low Tide / height (m) | 2:18PM 1.00 | 2:49AM 0.90 | 3:26PM 0.92 | 3:52AM 0.82 | 4:23PM 0.81 | 4:46AM 0.73 | ||||||||||||||||||
Wednesday 31 | Thursday 01 | Friday 02 | Saturday 03 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 5:54 | - | - | - | - | - | - | - | 5:54 | - | - | - | - | - | - | - | 5:56 |
| Sunset | - | - | - | 8:51 | - | - | - | - | - | - | - | 8:51 | - | - | - | - | - | - | - | 8:52 | - | - | - | - |
 |  | | |  |  |  |  |  | | | |  | | |  | | | | | | | | | |
Rain (mm) | 1 | 3 | 2 | 1 | 1 | - | - | - | - | 1 | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 19 | 21 | 23 | 21 | 18 | 18 | 18 | 18 | 21 | 20 | 18 | 18 | 17 | 15 | 15 | 15 | 18 | 19 | 20 | 18 | 15 | 14 | 13 | 15 |
| Feels °C (?) | 19 | 21 | 23 | 21 | 18 | 17 | 16 | 16 | 19 | 18 | 16 | 16 | 16 | 14 | 14 | 13 | 16 | 16 | 18 | 17 | 15 | 14 | 12 | 13 |
- 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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