
Surf Forecasts:
Kahutara surf forecast from 9 Aug 2026:
- Best quality surf: Tuesday 11 Aug, 3AM (local time) - 6ft (1.9m), 9s period, SSE swell with cross-offshore winds.
- Most powerful swell: Sunday 16 Aug, 12AM (local time) - 10ft (3.0m), 9s period, SSE swell with 1,424 kJ wave energy.
- Next surfable swell (1★+): Sunday 9 Aug, 9PM (local time) - 2.5ft (0.8m), 10s period with SSE swell.
Best Forecast Surf Conditions for Kahutara this week:
The surf forecast for Kahutara over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Aug 09) at 9PM. The primary swell is predicted to be 0.8m and 10s period with a secondary swell of 0.8m and 6s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Kahutara in the next 16 days are 3.0m 9s and forecast to arrive on Sunday (Aug 16) at 12AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.1m 6s period and expected on Wednesday (Aug 12) at 6PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Sun 9th Aug) | 2.5ft (0.8m) 10s |
| Best Surf | 3AM (Tue 11th Aug) | 6ft (1.9m) 9s |
| Most Powerful | 12AM (Sun 16th Aug) | 10ft (3.0m) 9s |
Table - best surf conditions forecast for Kahutara over the next 16 days.
The Lowdown
Alright, surfers, Rusty here with the outlook for Kahutara. We’ve got a bit of a slow start, but a solid run of waves is building, so hang tight.
First up, the water here is sitting at 50°F, which is pretty much bang on average for this time of year, nothing unusual there.
The early part of the week is just tiny, weak stuff. Sunday morning the 9th might tempt you with a small 3ft SSE swell, but the energy is low (283) and the wind is a bit messy. It’s not worth paddling out for. Monday is flat and ordinary, and Tuesday the 11th brings a bit more height at 5ft from the SSE, but the period is a short 8 seconds and the energy is still just moderate (362). The glassy wind on Tuesday morning will make it look pretty, but it’s not going to have any punch.
We get a spike in energy on Wednesday the 12th morning, with a 6ft ENE swell hitting a moderate 464 energy, but it’s a short-period wind swell at 6 seconds. It will be fat and bumpy, even if the wind is light. Thursday and Friday fade back into the doldrums with very weak, small waves.
Now, here’s where it gets interesting. The real action kicks off on Sunday the 16th. A big pulse of S swell arrives at 12ft, but that’s massive – over 8ft so it’s expert territory only, and the wind is howling. It’s going to be a wild, blown-out mess. This setup looks more interesting for kite surfing than paddle surfing.
The standout window is from Tuesday the 18th through to Thursday the 20th. This is the one you want to circle on your calendar. Tuesday afternoon sees an 8ft S swell with a solid 10-second period, clean cross-off winds, and very strong wave energy (2089). That’s a proper groundswell. Wednesday the 19th is a dream: a 8ft S swell with a gorgeous 15-second period, glassy wind, and powerful energy (2255). This is excellent, clean surf for experienced surfers. The period is very long, so it will wrap beautifully around the reef and point at Kahutara. Thursday morning the 20th is still very good, with a 5ft S swell, glassy conditions, and a long 12-second period. That’s your best bet for a slightly smaller, still clean session.
After that, Friday the 21st is still big but the wind turns cross-shore, making it a bit lumpy, and the window fades out over the final weekend into cleaner but smaller leftover swell.
So, the clear winner is Wednesday the 19th. Big, powerful, glassy, and long-period. It doesn’t get much better than that at Kahutara. The week before it is a write-off, so save your energy.
Rusty.
Short Range ForecastMostly dry. Very mild (max 14°C on Wed morning, min 8°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 36mm), heaviest during Fri night. Very mild (max 16°C on Thu morning, min 10°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Sun 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | ||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map | ||||||||||||||||||||
Wave Height (m) Direction Period (s) | SSE 10 | SSE 10 | SSE 9 | S 9 | SSE 8 | SSE 9 | SE 8 | SE 8 | E 7 | ENE 7 | ENE 7 | ENE 6 | E 7 | ENE 8 | E 7 | E 7 | E 8 | S 7 | S 8 | SSE 9 |
Wave Graph | ||||||||||||||||||||
135 | 137 | 136 | 194 | 414 | 489 | 297 | 157 | 218 | 431 | 299 | 215 | 251 | 397 | 155 | 130 | 201 | 456 | 808 | 1424 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | off | cross-off | cross | cross | glassy | cross-on | cross | cross-off | cross | cross-off | glassy | glassy | glassy | glassy | cross | cross-off | cross-off | cross-off | cross-off |
High Tide | 1:34AM1.97m | 2:01PM2.11m | 2:31AM2.01m | 2:56PM2.15m | 3:26AM2.04m | 3:51PM2.16m | 4:18AM2.05m | 4:45PM2.15m | 5:11AM2.05m | 5:38PM2.12m | 6:06AM2.03m | 6:31PM2.08m | ||||||||
Low Tide | 7:28PM0.44m | 7:43AM0.37m | 8:22PM0.37m | 8:40AM0.32m | 9:16PM0.32m | 9:38AM0.27m | 10:10PM0.29m | 10:34AM0.23m | 11:06PM0.29m | 11:28AM0.22m | 00:00AM0.30m | 12:20PM0.26m | 00:53AM0.33m | |||||||
— | — | 7:24 | — | — | 7:24 | — | — | 7:22 | — | — | 7:20 | — | — | 7:20 | — | — | 7:18 | — | — | |
5:35 | — | — | 5:36 | — | — | 5:37 | — | — | 5:37 | — | — | 5:39 | — | — | 5:40 | — | — | 5:42 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 6 | 23 | 7 | 9 | 22 |
Temp °C | 13 | 13 | 12 | 12 | 10 | 11 | 11 | 10 | 14 | 15 | 13 | 16 | 16 | 14 | 13 | 11 | 11 | 10 | 9 | 9 |
Feels °C | 11 | 9 | 8 | 7 | 7 | 8 | 8 | 7 | 11 | 12 | 11 | 15 | 15 | 13 | 11 | 9 | 9 | 7 | 4 | 3 |
Swell 1 Height (m) Direction Period (s) | SSE 10 | SSE 10 | SSE 9 | SSE 9 | SSE 8 | SSE 9 | SE 8 | SE 8 | E 7 | E 7 | E 7 | ENE 7 | SSE 8 | E 8 | E 7 | E 7 | E 8 | E 9 | E 10 | SSE 9 |
135 | 137 | 136 | 143 | 414 | 489 | 297 | 157 | 218 | 270 | 203 | 143 | 7 | 283 | 155 | 130 | 201 | 251 | 244 | 1067 | |
Swell 2 Height (m) Direction Period (s) | ENE 5 | ENE 6 | NE 7 | SE 12 | SE 12 | S 13 | SE 12 | SE 11 | S 11 | SSE 10 | SSE 9 | SSE 10 | ESE 13 | ESE 13 | SE 13 | ESE 13 | ESE 14 | S 18 | S 17 | E 11 |
13 | 32 | 12 | 51 | 144 | 4 | 65 | 30 | 9 | 33 | 28 | 10 | 18 | 17 | 27 | 17 | 20 | 102 | 214 | 297 | |
Swell 3 Height (m) Direction Period (s) | E 13 | S 16 | S 16 | ENE 6 | S 15 | S 20 | S 18 | S 17 | S 16 | SE 14 | ESE 14 | ESE 14 | S 16 | S 16 | S 16 | S 15 | S 16 | S 18 | SE 14 | S 17 |
14 | 21 | 19 | 4 | 17 | 8 | 6 | 6 | 5 | 8 | 20 | 19 | 21 | 20 | 19 | 18 | 20 | 162 | 7 | 290 | |
Wind waves Height (m) Direction Period (s) | — | — | SW 2 | S 9 | — | — | — | NE 4 | NE 6 | ENE 7 | ENE 7 | ENE 6 | E 7 | ENE 8 | SSW 2 | SSW 2 | SSW 5 | S 7 | S 8 | SSE 9 |
— | — | 1 | 194 | — | — | — | 10 | 97 | 431 | 299 | 215 | 251 | 397 | 1 | 1 | 52 | 456 | 808 | 1424 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 11 | 0 | 0 | 135 | 0 | 0 | 121 | 33 | 0 | 0 | 0 | 0 | 19 | 0 | 0 | 54 | 0 | 9 | 121 |
Best forecast wave conditions in Kaikoura and Marlborough | ||||||||||||||||||||
Best forecast wave conditions in New Zealand | ||||||||||||||||||||
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Information about the Kahutara Surf forecast
The above surf forecast table for Kahutara provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Kahutara can be found by selecting the local surf guide option on the grey menu. Our Kahutara 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 (Kahutara) 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 Kahutara 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.
Kahutara is 106 km (66 miles) from the city of Blenheim. If you plan a holiday in Kaikoura and Marlborough, look for hotels and other accommodation in Blenheim. Blenheim has rooms for a wide range of budgets as well as car hire and transport links.











