Surf Forecasts:
Kahutara surf forecast from 21 Aug 2026:
- Best quality surf: Monday 24 Aug, 6AM (local time) - 6.5ft (2.0m), 14s period, S swell with cross-offshore winds.
- Most powerful swell: Monday 24 Aug, 6AM (local time) - 6.5ft (2.0m), 14s period, S swell with 1,594 kJ wave energy.
- Next surfable swell (1★+): Saturday 22 Aug, 12PM (local time) - 2.5ft (0.8m), 11s period with S 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 Saturday (Aug 22) at 12PM. The primary swell is predicted to be 0.8m and 11s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Kahutara in the next 16 days are 2.0m 14s and forecast to arrive on Monday (Aug 24) at 6AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 8s period and expected on Sunday (Aug 23) at 6AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Sat 22nd Aug) | 2.5ft (0.8m) 11s |
| Best Surf | 6AM (Mon 24th Aug) | 6.5ft (2.0m) 14s |
| Most Powerful | 6AM (Mon 24th Aug) | 6.5ft (2.0m) 14s |
Table - best surf conditions forecast for Kahutara over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get into it for this stretch. We’ve only got one break on the table for the whole 16-day window, so I’ll be honest – it’s a bit of a slow burn, but there are some proper moments to look forward to.
The main story is Kahutara, a reef and point set-up that’s fairly consistent. For the first few days, it’s pretty flat. The weekend of the 22nd and 23rd of August is a write-off – tiny, gutless waves with a bit of a strong offshore breeze that’ll have you scratching your head trying to get into anything. You’ll be waiting for a real pulse.
The real kick-off comes on Monday, 24th August. The morning session is the standout. We’ve got a 7 ft swell from the south with a long 14-second period, creating a solid amount of energy. That’s a proper groundswell. The wind is light from the NNW, a cross-off, meaning clean lines. The water temp is about average for this time of year. This is for the experienced crew though – at 7 ft, it’s big enough to keep the beginners on the beach.
The rest of that week is a mixed bag. Tuesday the 25th has a morning window with a 2 ft south swell, but the wind is light offshore from the west, so it’ll be clean and fun for the smaller gear. The energy is moderate. Thursday and Friday are choppy and onshore, so not worth paddling out for.
The next real highlight is a big one, but it’s a long way off. Monday, 31st August sees a 8 ft south swell rolling in with a 11-second period, packing a punch. The wind is light cross-onshore, so it’ll be a bit textured but still surfable. Still a big wave for the confident surfers.
Then, the real monster shows up. On Wednesday, 2nd September, we’ve got an absolute bomb. The morning is 10 ft and the afternoon goes to 13 ft from the south. That’s a massive amount of energy. The wind goes glassy in the afternoon, which is about as good as it gets for conditions. This is not for the faint of heart. Only experts should even think about it. The 11-second period means it’ll be a fast, powerful wall.
Finally, Saturday, 5th September morning is another cracker – 12 ft from the south with a light offshore wind. Clean, big, and powerful. Another expert-only session.
So, the two standouts in this whole run are Monday, 24th August morning for a solid, clean groundswell that’s still manageable, and the Wednesday, 2nd September afternoon for the absolute epic, glassy, giant swell. If you’re an expert, that’s your day. Everyone else, wait for the 24th.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Sat night. Very mild (max 15°C on Mon morning, min 8°C on Sun night). Winds decreasing (strong winds from the WNW on Sat night, calm by Mon morning). | Days 4-6 Weather SummaryMostly dry. Very mild (max 19°C on Thu morning, min 11°C on Wed afternoon). Wind will be generally light. | ||||||||||||||||||||
Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | |||||||||||||||
AM | 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) | S 11 | S 10 | S 10 | SSE 9 | ESE 13 | ESE 13 | S 14 | S 14 | S 11 | S 16 | S 15 | S 16 | S 15 | S 15 | S 15 | S 12 | S 11 | S 11 | S 12 | S 11 | S 11 |
Wave Graph | |||||||||||||||||||||
182 | 138 | 71 | 29 | 34 | 34 | 1463 | 714 | 279 | 177 | 112 | 254 | 347 | 440 | 711 | 314 | 361 | 361 | 449 | 363 | 291 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross-off | off | off | off | off | cross | off | off | off | off | cross-off | on | cross | glassy | cross-off | off | cross-off | cross | cross-off |
High Tide | 12:06PM1.88m | 00:29AM1.78m | 12:56PM1.86m | 1:17AM1.76m | 1:45PM1.85m | 2:06AM1.76m | 2:32PM1.85m | 2:52AM1.77m | 3:17PM1.87m | 3:36AM1.79m | 3:59PM1.88m | 4:18AM1.81m | 4:40PM1.91m | ||||||||
Low Tide | 6:32PM0.74m | 6:36AM0.72m | 7:19PM0.73m | 7:21AM0.70m | 8:03PM0.71m | 8:08AM0.67m | 8:46PM0.67m | 8:57AM0.62m | 9:30PM0.63m | 9:46AM0.57m | 10:14PM0.58m | 10:31AM0.53m | 10:58PM0.53m | ||||||||
7:07 | — | — | 7:05 | — | — | 7:05 | — | — | 7:03 | — | — | 7:01 | — | — | 7:00 | — | — | 6:58 | — | — | |
— | 5:49 | — | — | 5:50 | — | — | 5:51 | — | — | 5:52 | — | — | 5:52 | — | — | 5:53 | — | — | 5:54 | — | |
mm | — | — | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 14 | 14 | 12 | 13 | 10 | 15 | 15 | 13 | 16 | 16 | 13 | 13 | 12 | 12 | 19 | 19 | 17 | 19 | 19 | 17 |
Feels °C | 10 | 11 | 10 | 3 | 4 | 2 | 12 | 12 | 8 | 12 | 10 | 9 | 11 | 11 | 11 | 17 | 16 | 15 | 16 | 16 | 15 |
Swell 1 Height (m) Direction Period (s) | S 11 | S 10 | S 10 | NE 7 | ESE 13 | ESE 13 | S 14 | S 14 | S 11 | S 10 | S 9 | S 16 | S 15 | S 10 | S 15 | S 12 | S 11 | S 11 | S 12 | S 11 | S 11 |
182 | 138 | 71 | 27 | 34 | 34 | 1463 | 714 | 279 | 123 | 62 | 254 | 347 | 190 | 711 | 314 | 361 | 361 | 449 | 363 | 291 | |
Swell 2 Height (m) Direction Period (s) | NE 8 | NE 5 | NE 7 | NE 9 | NE 6 | SSW 5 | ESE 13 | ESE 14 | S 16 | S 16 | S 15 | SSW 9 | ESE 14 | S 15 | ESE 13 | S 15 | S 16 | S 15 | SE 16 | NE 7 | NE 7 |
15 | 4 | 9 | 20 | 6 | 3 | 34 | 39 | 85 | 177 | 112 | 26 | 19 | 440 | 17 | 109 | 118 | 222 | 9 | 16 | 33 | |
Swell 3 Height (m) Direction Period (s) | ESE 10 | E 9 | E 13 | SSE 9 | SSE 9 | S 17 | NNE 8 | NNE 4 | ESE 14 | ESE 14 | ESE 14 | ESE 14 | ESE 14 | ESE 13 | — | ENE 5 | ENE 5 | ENE 4 | W 3 | SE 15 | ESE 14 |
10 | 2 | 14 | 29 | 8 | 23 | 6 | 1 | 40 | 38 | 19 | 19 | 19 | 18 | — | 14 | 4 | 2 | 2 | 9 | 20 | |
Wind waves Height (m) Direction Period (s) | WSW 4 | NE 6 | — | WNW 2 | W 4 | W 4 | — | — | — | W 2 | W 3 | SW 3 | SE 4 | ENE 4 | NE 4 | NE 5 | — | WSW 3 | NE 4 | — | — |
7 | 15 | — | 1 | 36 | 6 | — | — | — | 2 | 5 | 2 | 10 | 10 | 18 | 29 | — | 2 | 3 | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 23 | 19 | 0 | 0 | 11 | 0 | 0 | 0 | 0 | 0 | 70 | 33 | 0 | 0 | 0 | 0 | 19 | 0 |
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.











