Surf Forecasts:
Kahutara surf forecast from 23 Aug 2026:
- Best quality surf: Monday 24 Aug, 6AM (local time) - 6.5ft (2.0m), 13s period, S swell with cross-offshore winds.
- Most powerful swell: Monday 24 Aug, 6AM (local time) - 6.5ft (2.0m), 13s period, S swell with 1,419 kJ wave energy.
- Next surfable swell (1★+): Monday 24 Aug, 12AM (local time) - 1ft (0.3m), 13s period with ESE 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 Monday (Aug 24) at 12AM. The primary swell is predicted to be 0.3m and 13s period with a secondary swell of 0.4m and 9s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Kahutara in the next 16 days are 2.0m 13s 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 2.5m 7s period and expected on Friday (Aug 28) at 6AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Mon 24th Aug) | 1ft (0.3m) 13s |
| Best Surf | 6AM (Mon 24th Aug) | 6.5ft (2.0m) 13s |
| Most Powerful | 6AM (Mon 24th Aug) | 6.5ft (2.0m) 13s |
Table - best surf conditions forecast for Kahutara over the next 16 days.
The Lowdown
G’day, Rusty here, looking at what’s comin’ down the line at Kahutara.
The window kicks off with a flat, messy start this Sunday the 23rd. We got a little 0.4m push from the SSE on Sunday mornin’ but a howling 35 km/h WNW offshore is just tearin’ it up, so forget about it. The afternoon’s even worse with 40 km/h winds. No surf to speak of. Then Monday the 24th brings the first real flicker of life. A clean 1.8m S swell rolls in with a 14-second period, and a light NW breeze in the mornin’ makes it look pretty good. The combined energy’s a solid 1313 (moderate) so there’s some punch there, but this one’s aimed at the experienced crew – 1.8m with that period gets a bit hefty for beginners. Monday afternoon the wind turns cross-shore and drops the quality.
The real standout in this whole stretch is Monday the 24th morning. That’s your best bet. Clean wave face, decent size, and that S swell direction is right in the sweet spot for Kahutara’s optimum. Water temp’s at 10°, which is about 0.5° below the long-term average – pretty normal for this time of year, so no surprises there.
Tuesday the 25th into Wednesday the 26th drops off quick. Swell fades to 0.6m-0.7m with long periods (15-16 secs) but the energy’s weak (around 242-248). Offshore winds keep it clean, but honestly it’s small and gutless. Might be a fun little wave if you’re on a log, but nothin’ to write home about. Then Thursday the 27th sees a jump to 1.5m with a massive 17-second period and energy up to 1379, but the light cross-onshore puts a ripple on it. It’s rideable but won’t be pristine. Friday the 28th afternoon glass off with 1.0m S swell and zero wind – that’s your sneaky clean session if you’re patient.
A big gap opens from Saturday the 29th through till Monday the 31st. Wave heights bounce up to 2.5m on Monday afternoon but the cross-onshore wind and questionable tide make it marginal. Then we hit a dry spell until the 1st of September. Tuesday the 1st is small again (1.4m) but clean with light offshore flow.
Now here’s the long-range hero: Sunday the 6th of September. Big, clean 3.5m S swell rolls in with a light offshore breeze. The combined energy is 3140 (strong) – that’s a serious amount of water moving. Period drops a bit to 11 seconds, so it’s more of a wind swell, but it’s solid, clean, and powerful. That’s for experts only. Monday the 7th keeps the size with 2.5m but adds light rain and onshore flow, so less clean.
Overall, Kahutara (New Zealand) ain’t firing on all cylinders for the first week, but that Monday the 24th morning stands out if you can get out. The long-range Sunday the 6th looks like a beast, but a week and a half out, treat it as promising but not locked in. Crowds here are “sometimes” so you might have company on the good days.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Sun morning. Very mild (max 17°C on Tue afternoon, min 8°C on Sun night). Winds decreasing (strong winds from the WNW on Sun morning, calm by Tue night). | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Thu morning. Very mild (max 17°C on Fri afternoon, min 11°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | |||||||||||||||
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) | SSE 9 | ESE 13 | ESE 13 | S 14 | S 14 | S 11 | S 16 | S 15 | S 16 | S 15 | S 14 | S 16 | S 17 | S 16 | S 15 | S 13 | S 12 | S 11 | S 10 | S 10 | S 9 |
Wave Graph | |||||||||||||||||||||
29 | 34 | 34 | 1279 | 644 | 240 | 179 | 163 | 318 | 209 | 106 | 396 | 1251 | 977 | 711 | 395 | 282 | 192 | 135 | 94 | 80 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | cross-off | cross | off | off | off | cross-off | cross-off | cross-off | off | cross-on | cross-on | cross-off | cross-off | glassy | off | cross-off | off | cross-off |
High Tide | 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 | 5:00AM1.83m | 5:20PM1.93m | ||||||||
Low Tide | 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 | 11:13AM0.49m | 11:41PM0.50m | ||||||||
7:05 | — | — | 7:05 | — | — | 7:03 | — | — | 7:01 | — | — | 7:00 | — | — | 6:58 | — | — | 6:56 | — | — | |
— | 5:50 | — | — | 5:51 | — | — | 5:52 | — | — | 5:52 | — | — | 5:53 | — | — | 5:54 | — | — | 5:55 | — | |
mm | 2 | — | — | — | — | — | — | — | — | — | — | — | 3 | 2 | — | — | — | — | — | — | 5 |
Temp °C | 13 | 12 | 10 | 15 | 15 | 14 | 16 | 17 | 13 | 15 | 16 | 16 | 11 | 12 | 14 | 16 | 17 | 13 | 15 | 14 | 13 |
Feels °C | 5 | 2 | 2 | 12 | 12 | 8 | 11 | 11 | 9 | 12 | 13 | 14 | 10 | 11 | 13 | 14 | 16 | 10 | 12 | 7 | 6 |
Swell 1 Height (m) Direction Period (s) | NE 6 | NE 6 | SSW 9 | S 14 | S 14 | S 11 | S 10 | S 15 | S 16 | S 15 | S 11 | S 16 | S 17 | S 16 | S 15 | NE 7 | S 12 | S 11 | S 10 | S 10 | S 9 |
19 | 6 | 26 | 1279 | 644 | 240 | 123 | 163 | 318 | 209 | 61 | 396 | 1251 | 977 | 711 | 167 | 282 | 192 | 135 | 94 | 80 | |
Swell 2 Height (m) Direction Period (s) | SSE 9 | ESE 13 | ESE 13 | ESE 13 | ESE 14 | S 16 | S 16 | S 9 | ESE 14 | ESE 14 | S 14 | S 11 | NE 5 | ESE 12 | SE 6 | S 13 | E 6 | ENE 7 | NE 8 | S 4 | NE 4 |
29 | 34 | 34 | 34 | 39 | 83 | 179 | 61 | 19 | 38 | 106 | 110 | 4 | 13 | 38 | 395 | 38 | 54 | 17 | 9 | 9 | |
Swell 3 Height (m) Direction Period (s) | NE 9 | SSE 9 | S 17 | — | NNE 4 | ESE 14 | ESE 14 | ESE 14 | — | SSE 4 | ESE 4 | NE 7 | ESE 13 | ESE 12 | SE 12 | SE 16 | NNE 7 | ESE 14 | SE 13 | NE 8 | SE 12 |
20 | 16 | 23 | — | 1 | 40 | 37 | 18 | — | 1 | 2 | 7 | 16 | 13 | 5 | 10 | 31 | 20 | 27 | 18 | 23 | |
Wind waves Height (m) Direction Period (s) | WNW 3 | WSW 5 | WNW 3 | — | — | — | W 2 | W 4 | WNW 3 | — | NE 2 | N 3 | S 6 | SE 6 | NE 7 | NNE 7 | — | WSW 3 | WSW 3 | — | NNE 5 |
2 | 54 | 4 | — | — | — | 1 | 10 | 2 | — | 2 | 10 | 112 | 116 | 131 | 611 | — | 2 | 1 | — | 40 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 23 | 43 | 0 | 0 | 11 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 43 | 19 | 0 | 0 | 0 | 0 | 0 | 19 | 23 |
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.











