Kai-Iwi 48 hour detailed Surf Forecast

Lat Long: 39.90° S 174.92° E

Issued: 5 am 12 Jul 2026 (local time)

Forecast update in hr min

Today's Kai-Iwi sea temperature is

13.6° C

Kai-Iwi surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Surf Forecasts:

How big are the waves at Kai-Iwi today (12 Jul):

Morning surf: Morning surf (12 Jul, local time) - 2ft (0.6m), 16s period with WSW swell.
Afternoon surf: Afternoon surf (12 Jul, local time) - 2ft (0.6m), 16s period with WSW swell.
Evening surf: Evening surf (12 Jul, local time) - 1.5ft (0.5m), 15s period with SW swell.

The current surf forecast for Kai-Iwi at 12PM is: 0.6m 16s primary swell from a West-southwest direction and 0.3m 13s secondary swell from a South direction (forecast issued at 05:00am July 12). The wind direction is predicted to be glassy.

Time (NZST) & Date	Wave Height	Wave Period
Morning (12 Jul)	2ft (0.6m)	16s
Afternoon (12 Jul)	2ft (0.6m)	16s
Evening (12 Jul)	1.5ft (0.5m)	15s

Table - waves today at Kai-Iwi. (Swell directed towards the surf break)

	Short Range Forecast Some drizzle, heaviest during Mon night. Very mild (max 15°C on Tue morning, min 5°C on Sun morning). Wind will be generally light.
	Sunday 12							Monday 13								Tuesday 14								Wed 15
	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
Rating (10 max)	1	1	1	1	1	1	1	1	1	1	0	0	0	0	0	0	0	1	0	0	0	2	1	1
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	WSW 16	WSW 16	WSW 16	WSW 16	WSW 16	SW 15	SW 15	WSW 15	SW 15	WSW 15	SW 15	SW 14	SW 14	SW 14	WSW 14	WSW 14	W 9	W 10	W 9	W 9	W 9	WNW 8	WNW 8	WNW 10
Wave Graph
kJ	173	173	171	169	164	113	109	86	106	85	54	53	52	32	19	19	199	354	225	96	99	249	331	288
Wind (km/h)	ENE	ENE	NE	NNW	SW	N	NNE	NNE	NNE	N	NNW	NNW	NNW	N	N	N	N	NNW	NNW	NW	NNW	NNW	NNW	NNW
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	cross-off	cross-off	cross-off	glassy	glassy	glassy	off	off	off	off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off
High Tide			7:58AM2.54m				8:41PM2.68m					9:03AM2.65m				9:34PM2.82m				9:58AM2.75m				10:24PM2.93m
Low Tide	1:53AM1.01m				2:22PM0.90m				2:55AM0.87m					3:20PM0.78m				3:49AM0.75m				4:12PM0.68m


	—	7:39	—	—	—	—	—	—	—	7:39	—	—	—	—	—	—	—	7:39	—	—	—	—	—	7:37
	—	—	—	—	5:12	—	—	—	—	—	—	—	5:12	—	—	—	—	—	—	—	5:13	—	—	5:14
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1	—	—	—	—	—	—	—
Temp °C	5	4	5	9	11	8	7	7	7	8	9	13	13	12	12	13	12	12	12	15	14	13	12	13
Feels °C	2	1	2	7	9	6	4	4	3	5	5	8	8	8	7	8	7	8	8	12	11	10	8	9
Swell 1 Height (m) Direction Period (s)	WSW 16	WSW 16	WSW 16	WSW 16	WSW 16	SW 15	SW 15	WSW 15	SW 15	WSW 15	SW 15	SW 14	SW 14	SW 14	WSW 14	WSW 14	W 9	W 10	W 9	W 9	W 9	W 10	W 10	WSW 12
kJ	173	173	171	169	164	113	109	86	106	85	54	53	52	32	19	19	199	354	225	96	99	118	284	104
Swell 2 Height (m) Direction Period (s)	S 4	S 8	S 8	S 13	S 12	S 11	S 10	S 10	S 9	S 9	S 9	S 9	S 9	S 9	S 9	S 12	S 12	S 9	SW 14	SW 20	SW 20	W 5	WSW 18	SW 18
kJ	3	12	12	29	25	21	18	17	6	7	7	7	6	6	2	12	3	2	7	16	16	29	31	84
Swell 3 Height (m) Direction Period (s)	S 15	S 14	S 13	W 6	W 6	—	—	S 15	S 10	—	—	S 13	S 14	S 13	S 13	—	W 23	W 22	S 9	S 9	S 8	SW 18	WSW 14	WSW 18
kJ	17	16	14	1	1	—	—	5	2	—	—	3	4	3	3	—	10	10	2	1	1	13	18	32
Wind waves Height (m) Direction Period (s)	—	—	—	—	—	—	—	—	—	NNW 2	NNW 3	NW 4	NW 4	NW 4	NNW 4	NW 5	NNW 5	NNW 4	NNW 4	WNW 5	WNW 5	WNW 8	WNW 8	WNW 10
kJ	—	—	—	—	—	—	—	—	—	1	1	14	18	17	22	49	49	18	11	29	28	249	331	288
Nearest Offshore or Glassy	Kai-Iwi Wanganui-Manawatu	Kai-Iwi Wanganui-Manawatu	Kai-Iwi Wanganui-Manawatu	Kai-Iwi Wanganui-Manawatu	Kai-Iwi Wanganui-Manawatu	Kai-Iwi Wanganui-Manawatu	Kai-Iwi Wanganui-Manawatu	Kai-Iwi Wanganui-Manawatu	Kai-Iwi Wanganui-Manawatu	Kai-Iwi Wanganui-Manawatu	The Point (nr Wainui) Wanganui-Manawatu	Akito River Mouth and Reef Wairarapa	Akito River Mouth and Reef Wairarapa	Akito River Mouth and Reef Wairarapa	Akito River Mouth and Reef Wairarapa	Akito River Mouth and Reef Wairarapa	Wainui Reef Wanganui-Manawatu	Wainui Reef Wanganui-Manawatu	Wainui Reef Wanganui-Manawatu	Wainui Reef Wanganui-Manawatu	Wainui Reef Wanganui-Manawatu	Kai-Iwi Wanganui-Manawatu	Wainui Reef Wanganui-Manawatu	Wainui Reef Wanganui-Manawatu
Rating (10 max)	1	1	1	1	1	1	1	1	1	1	1	1	1	2	1	1	1	2	1	1	1	2	2	2
Distance (km)	0	0	0	0	0	0	0	0	0	0	18	150	150	150	150	150	13	13	13	13	13	0	13	13
Best forecast wave conditions in Wanganui and the Manawatu	Whangaehu River Mouth	Whangaehu River Mouth	Whangaehu River Mouth	Whangaehu River Mouth	Whangaehu River Mouth	Whangaehu River Mouth	Whangaehu River Mouth	Whangaehu River Mouth	Whangaehu River Mouth	The Fences	Nukumaru Rock						Wainui Reef	Wainui Reef	Wainui Reef	Wainui Reef	Wainui Reef	Wainui Reef	Wainui Reef	Wainui Reef
Rating (10 max)	1	1	1	1	1	1	1	1	1	1	1						1	2	1	1	1	2	2	2
Best forecast wave conditions in New Zealand	Papatowai Catlins	Papatowai Catlins	Papatowai Catlins	Raglan-Indicators Raglan and West Waikato	Raglan-Indicators Raglan and West Waikato	Raglan-Indicators Raglan and West Waikato	Stent Road Taranaki	Fox River West Coast South Island	Raglan-Whale Bay Raglan and West Waikato	Raglan-Whale Bay Raglan and West Waikato	Waimarie West Coast South Island	Waimarie West Coast South Island	Waimarie West Coast South Island	Little Wanganui West Coast South Island	Blaketown Wedge West Coast South Island	Blaketown Wedge West Coast South Island	Punakaiki West Coast South Island	Nine Mile West Coast South Island	Waimarie West Coast South Island	Stent Road Taranaki	Papatowai Catlins	Papatowai Catlins	Papatowai Catlins	Papatowai Catlins
Rating (10 max)	4	4	4	4	4	4	4	3	3	3	2	2	2	3	4	4	3	3	3	3	4	4	5	5
Header Global	Kaifu Rivermouth Japan	Kaifu Rivermouth Japan	Kaifu Rivermouth Japan	Kaifu Rivermouth Japan	Ilot Sancho Mauritius	Etang-Sale Reunion	Bluff Panama	Bluff Panama	Bluff Panama	Ilot Sancho Mauritius	Black Rocks Mauritius	Black Rocks Mauritius	Black Rocks Mauritius	Amanzimtoti South Africa	Benkunqut Indonesia	Injidup Carpark Australia	Bancoora Australia	Bullies Australia	Bullies Australia	Buchupureo Chile	Buchupureo Chile	Buchupureo Chile	Cathedral Rock Australia	Cathedral Rock Australia
Rating (10 max)	6	6	5	5	5	5	4	4	4	5	4	4	4	4	4	5	5	7	7	7	6	5	9	9

Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)

Latest Updates

Ben Mondy

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.

Kai-Iwi 48 hour detailed Surf Forecast

How big are the waves at Kai-Iwi today (12 Jul):

Short Range Forecast

Latest Updates

How Our WaveFinder Tool Makes Forecasting Easier Than Ever Before

The Five Best Forecasts For International Surfing Day 2026

Best Surf Travel Deals & Discounts For 2026 To Help Make Surf Travel Cheaper

Let Our Surf Alerts Do All Your Forecast Heavy Lifting

Talking To Maddie Meddings on New Film Undercurrents. (And Then Watch It!)

FREE! Surf-Forecast.com widget for your website