
Surf Forecasts:
Kahutara surf forecast from 17 Jul 2026:
- Best quality surf: Saturday 18 Jul, 9AM (local time) - 5ft (1.6m), 23s period, S swell with offshore winds.
- Most powerful swell: Saturday 18 Jul, 12PM (local time) - 6ft (1.8m), 23s period, S swell with 3,284 kJ wave energy.
- Next surfable swell (1★+): Saturday 18 Jul, 3AM (local time) - 5ft (1.6m), 15s 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 Saturday (Jul 18) at 3AM. The primary swell is predicted to be 1.6m and 15s period with a secondary swell of 0.9m and 15s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Kahutara in the next 16 days are 1.8m 23s and forecast to arrive on Saturday (Jul 18) at 12PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 5s period and expected on Friday (Jul 24) at 6AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Sat 18th Jul) | 5ft (1.6m) 15s |
| Best Surf | 9AM (Sat 18th Jul) | 5ft (1.6m) 23s |
| Most Powerful | 12PM (Sat 18th Jul) | 6ft (1.8m) 23s |
Table - best surf conditions forecast for Kahutara over the next 16 days.
The Lowdown
G’day, Rusty here, and I’ve got a proper look at what’s coming our way for the next couple of weeks. We’ve got a solid run of south swell on the cards, and if you know where to look, there’s some absolute gems in the mix. The standout is going to be Kahutara, a reef and point setup that loves a good south groundswell, and it’s pretty consistent with a WNW offshore direction. The water temperature is sitting about average for this time of year, so nothing to brace for there.
The action kicks off on Saturday the 18th of July. The morning session is looking prime – clean, with a light offshore wind from the WNW blowing at 3 mph. You’ve got a 5ft south swell, with a very long period of 23 seconds, and the combined wave energy is pumping at 3552 (very strong). That’s proper groundswell, and at a point and reef break, it’s going to unload with some real shape. The afternoon gets even better: glassy conditions, 6ft south swell, 20-second period, energy at 3200. This is the best on offer – it’s big enough to be for experienced surfers only, over 5ft, but with that wind and direction, it’ll be a dream.
Sunday the 19th starts clean again with a 5ft swell from the south, 16-second period, and a cross-off wind from the WSW at 6 mph. Combined energy is 1440 (strong). The afternoon gets a bit bumpy with a cross-on wind, so the morning is the pick. By Monday the 20th, we’re back in business: glassy morning with 5ft south swell, 14-second period, 2019 energy (strong), and the afternoon goes ballistic – 7ft south swell, 18-second period, glassy, with a massive 3132 energy. That afternoon session is another absolute standout, but again, with swell over 7ft, it’s strictly for the experienced crew.
Tuesday the 21st holds strong with a clean morning, 5ft south swell, 14-second period, and 1029 energy (moderate). The afternoon gets glassy with 5ft swell, 13-second period, and 719 energy (moderate to strong). Wednesday the 22nd sees the swell drop to 3ft in the morning, 10-second period, 204 energy (weak), and the afternoon is tiny and poor. Thursday the 23rd is flat and ordinary, with 1ft swell – not worth paddling out.
Friday the 24th brings a new pulse: 7ft swell from the south in the morning, but the period is short at 7 seconds, with 437 energy (moderate). The afternoon kicks up to 8ft from the SSW, 8-second period, 1184 energy (strong), but with 16 mph cross-off wind, it’s messy and marginal. The short period means it’ll be choppy.
After that, there’s a gap of poor conditions from Saturday the 25th through Sunday the 26th – strong winds, rain, and jumbled up swell. Not worth it. Monday the 27th has a clean 6ft south swell, 14-second period, 1572 energy (strong), but the wind is 9 mph cross-off, so it’s still a bit rough. Tuesday the 28th is small and glassy in the morning, 3ft, 10-second period, 284 energy (weak). Wednesday the 29th picks up a bit with 3ft from the SE, 12-second period, glassy in the afternoon, 376 energy (weak to moderate).
Now, into the second week, things get more promising but less certain. Thursday the 30th of July is looking good: 4ft south-east swell, 12-second period, clean with a cross-off wind, 701 energy (moderate). That’s a solid option. Friday the 31st is a bit cross-onshore, but still surfable with 4ft SE swell, 13-second period. Saturday the 1st of August is poor in the morning, but the afternoon brings a 6ft SSW swell, 8-second period, 574 energy (moderate), though it’s cross-shore and messy. Sunday the 2nd of August wraps it up with a clean 5ft south swell, 11-second period, 660 energy (moderate) – a decent finish.
Overall, the true standouts are the Saturday 18th July afternoon and the Monday 20th July afternoon at Kahutara. Both are glassy, with strong, long-period south swell and massive energy. If you’re experienced and can handle the size, don’t miss those windows. The spot is fairly consistent, and crowds are possible on the better days, so get in early.
Rusty.
Short Range ForecastMostly dry. Very mild (max 12°C on Sat afternoon, min 8°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 13°C on Tue afternoon, min 8°C on Mon night). Wind will be generally light. | ||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | ||||||||||||||
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) | ESE 15 | S 23 | S 20 | S 18 | S 16 | S 15 | S 15 | S 14 | S 18 | S 16 | S 14 | S 13 | S 12 | S 10 | S 10 | S 10 | SE 12 | SSE 12 | SE 11 |
Wave Graph | |||||||||||||||||||
1095 | 2666 | 2498 | 1741 | 977 | 1037 | 1114 | 1045 | 3007 | 1723 | 970 | 660 | 327 | 125 | 96 | 49 | 40 | 59 | 32 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | glassy | off | cross-off | cross-on | glassy | glassy | glassy | cross | cross-off | glassy | off | cross-off | on | cross | off | glassy | off |
High Tide | 7:30AM2.05m | 7:55PM2.09m | 8:27AM2.01m | 8:51PM2.02m | 9:21AM1.98m | 9:46PM1.96m | 10:14AM1.96m | 10:39PM1.92m | 11:05AM1.94m | 11:29PM1.87m | 11:57AM1.92m | 00:18AM1.84m | |||||||
Low Tide | 1:21AM0.29m | 1:39PM0.26m | 2:13AM0.33m | 2:32PM0.35m | 3:06AM0.40m | 3:27PM0.46m | 4:00AM0.46m | 4:24PM0.57m | 4:53AM0.53m | 5:22PM0.65m | 5:44AM0.59m | 6:19PM0.70m | |||||||
— | 7:48 | — | — | 7:48 | — | — | 7:47 | — | — | 7:47 | — | — | 7:46 | — | — | 7:45 | — | — | |
— | — | 5:14 | — | — | 5:15 | — | — | 5:15 | — | — | 5:16 | — | — | 5:17 | — | — | 5:19 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 10 | 11 | 12 | 10 | 11 | 10 | 9 | 10 | 10 | 9 | 12 | 13 | 11 | 12 | 11 | 9 | 12 | 12 | 11 |
Feels °C | 8 | 8 | 10 | 7 | 8 | 8 | 8 | 8 | 8 | 6 | 9 | 11 | 8 | 10 | 9 | 6 | 10 | 10 | 8 |
Swell 1 Height (m) Direction Period (s) | ESE 15 | S 23 | S 20 | S 18 | S 16 | S 15 | S 15 | S 14 | S 18 | S 16 | S 14 | S 13 | S 12 | S 10 | S 10 | S 10 | SE 12 | SSE 12 | SE 11 |
1095 | 2666 | 2498 | 1741 | 977 | 1037 | 1114 | 1045 | 3007 | 1723 | 970 | 660 | 327 | 125 | 96 | 49 | 40 | 59 | 32 | |
Swell 2 Height (m) Direction Period (s) | S 12 | ESE 14 | ESE 14 | ESE 14 | ESE 13 | ESE 13 | ESE 12 | S 19 | ESE 12 | ESE 12 | ESE 11 | ESE 11 | NE 6 | S 12 | SSW 14 | SSW 14 | SSE 9 | NE 5 | S 9 |
171 | 886 | 702 | 569 | 427 | 351 | 190 | 847 | 125 | 88 | 49 | 48 | 5 | 67 | 62 | 19 | 16 | 6 | 14 | |
Swell 3 Height (m) Direction Period (s) | S 15 | — | — | S 22 | S 22 | S 20 | — | ESE 12 | — | — | NE 4 | NE 4 | SE 11 | ESE 11 | ESE 11 | ESE 10 | ENE 4 | S 8 | NE 6 |
113 | — | — | 466 | 36 | 68 | — | 127 | — | — | 4 | 4 | 31 | 12 | 11 | 11 | 1 | 12 | 6 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | SW 4 | — | — | — | — | — | NNE 4 | NE 4 | — | WSW 3 | — | — | NE 4 | — | — |
— | — | — | — | 8 | — | — | — | — | — | 10 | 11 | — | 1 | — | — | 8 | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 97 | 0 | 0 | 0 | 11 | 0 | 0 | 0 | 0 | 43 | 11 | 0 | 0 | 19 |
Best forecast wave conditions in Kaikoura and Marlborough | |||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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.










