
Surf Forecasts:
Kahutara surf forecast from 31 Jul 2026:
- Best quality surf: Saturday 1 Aug, 6PM (local time) - 10ft (3.0m), 12s period, S swell with cross-offshore winds.
- Most powerful swell: Saturday 1 Aug, 12PM (local time) - 13ft (4.0m), 12s period, SSW swell with 5,312 kJ wave energy.
- Next surfable swell (1★+): Saturday 1 Aug, 6PM (local time) - 10ft (3.0m), 12s 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 01) at 6PM. The primary swell is predicted to be 3.0m and 12s period with a secondary swell of 0.7m and 15s. 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 4.0m 12s and forecast to arrive on Saturday (Aug 01) at 12PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Friday (Jul 31) at 9PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Sat 1st Aug) | 10ft (3.0m) 12s |
| Best Surf | 6PM (Sat 1st Aug) | 10ft (3.0m) 12s |
| Most Powerful | 12PM (Sat 1st Aug) | 13ft (4.0m) 12s |
Table - best surf conditions forecast for Kahutara over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a look at what’s heading our way.
Right now, it’s a bit of a slow start. The first few days are not really worth paddling out for, but we’ve got a beast of a swell building for the weekend. The standout by a long shot is Saturday, August 1st, with a solid 15ft SSW swell rolling in. The combined energy is massive (8420), so this is serious power. It’s a bit too big for beginners, but for the experienced crew, it’s going to be a proper session. The wind is offshore from the WSW, keeping things clean, and the water temp is about 50°F, which is pretty normal for this time of year.
Sunday morning, August 2nd, is glassy with a 6ft SSE swell, but the period is 10 seconds, so it’s a bit of a weaker wave. The energy is moderate (957). Not a day to go crazy for, but a nice relaxed paddle if you’re keen.
Monday, August 3rd, drops right back to 3ft SSE swell. The wind is offshore from the WNW, so it’s clean, but the energy is low (378). It’s a small day, more of a longboarder’s vibe.
Tuesday, August 4th, sees a jump back up to 12ft S swell with a 14-second period. That’s a long-period groundswell, so it’ll have plenty of push and shape, but the energy is high (4635). The wind is cross-off from the WSW, so it’s still clean. This one’s for the experts again.
Wednesday, August 5th, is the next highlight. The morning is glassy with a 7ft S swell, 12-second period, and solid energy (1526). The wind is light offshore from the W, making it clean. This is a real sweet spot for experienced surfers – not too big, but plenty of juice.
After that, the swell drops off fast. Thursday through to the following Tuesday is mostly small, messy, or onshore. There’s a gap of several days with no real recommendations. The water is still cold, around 50°F, and the wind is often cross or cross-on, so it’s not worth the effort.
Then, on August 11th, Tuesday, we get a weird one. A 7ft ENE swell, but with a short period of just 7 seconds. That’s windswell, not groundswell, so it’ll be a bit lumpy. The wind is cross-off from the WSW, so it’s clean, but the energy is moderate (562).
August 12th, Wednesday, brings an 12ft ENE swell with an 11-second period, so that’s a proper groundswell. The energy is strong (3912), and the wind is cross-off from the WSW. This one has potential for the experts, but it’s a mixed bag.
The very end of the period, August 15th, Saturday, is a nice surprise. The morning is completely glassy, calm wind, with a 5ft SSW swell. The energy is strong (1024). This is a great option for experienced surfers, and it’s going to be clean and lined up.
Overall, the best bets are Saturday, August 1st, and Saturday, August 15th, for the bigger, cleaner swells. The rest of the time is mostly small or messy, especially that long gap in the middle.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Fri night. Very mild (max 14°C on Sun afternoon, min 4°C on Fri night). Winds decreasing (strong winds from the WSW on Fri night, calm by Sun morning). | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Mon night. Very mild (max 15°C on Mon morning, min 5°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | |||||||||||||||
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) | E 11 | E 11 | SSW 8 | SSW 11 | S 12 | S 11 | SSE 10 | SSE 12 | SSE 11 | SSE 11 | S 12 | S 14 | S 14 | S 14 | S 14 | S 12 | S 12 | S 11 | S 11 | SSE 10 | SSE 9 |
Wave Graph | |||||||||||||||||||||
123 | 121 | 667 | 5079 | 4148 | 1379 | 610 | 905 | 335 | 223 | 251 | 2736 | 4635 | 3100 | 1922 | 1269 | 1256 | 556 | 332 | 267 | 217 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-off | cross-off | cross-off | off | off | cross | off | off | off | cross-off | cross-off | cross | cross-off | off | on | glassy | cross | cross-on | glassy |
High Tide | 5:54PM1.89m | 6:18AM1.77m | 6:34PM1.89m | 7:03AM1.78m | 7:17PM1.88m | 7:50AM1.81m | 8:05PM1.88m | 8:36AM1.84m | 8:57PM1.87m | 9:24AM1.88m | 9:51PM1.88m | 10:15AM1.92m | 10:45PM1.89m | ||||||||
Low Tide | 11:44AM0.52m | 00:16AM0.54m | 12:24PM0.50m | 00:57AM0.52m | 1:06PM0.49m | 1:38AM0.51m | 1:49PM0.50m | 2:22AM0.51m | 2:37PM0.52m | 3:10AM0.52m | 3:29PM0.56m | 4:03AM0.53m | 4:28PM0.58m | ||||||||
7:37 | — | — | 7:35 | — | — | 7:35 | — | — | 7:33 | — | — | 7:33 | — | — | 7:31 | — | — | 7:30 | — | — | |
— | 5:25 | — | — | 5:27 | — | — | 5:28 | — | — | 5:29 | — | — | 5:30 | — | — | 5:30 | — | — | 5:31 | — | |
mm | — | — | 2 | 1 | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 12 | 8 | 6 | 8 | 6 | 13 | 14 | 10 | 15 | 15 | 8 | 7 | 9 | 7 | 8 | 8 | 5 | 8 | 8 | 6 |
Feels °C | 5 | 5 | 0 | -1 | 1 | 1 | 10 | 10 | 7 | 9 | 9 | 3 | 2 | 4 | 0 | 5 | 4 | 2 | 4 | 5 | 4 |
Swell 1 Height (m) Direction Period (s) | E 11 | E 11 | E 11 | S 11 | S 12 | S 11 | SSE 10 | SSE 12 | SSE 11 | SSE 11 | S 12 | S 14 | S 14 | S 14 | S 14 | S 12 | S 12 | S 11 | SE 10 | SSE 10 | SSE 9 |
123 | 121 | 57 | 2297 | 2891 | 1379 | 610 | 905 | 335 | 223 | 251 | 1818 | 4635 | 3100 | 1922 | 1269 | 1256 | 556 | 316 | 267 | 217 | |
Swell 2 Height (m) Direction Period (s) | NE 6 | SE 15 | SE 15 | S 14 | SE 15 | SE 14 | SE 13 | S 10 | S 9 | S 9 | SE 11 | SE 12 | — | — | NE 12 | S 16 | ESE 18 | SSE 11 | S 11 | S 10 | ENE 5 |
21 | 37 | 79 | 808 | 218 | 261 | 342 | 52 | 85 | 56 | 115 | 21 | — | — | 6 | 257 | 30 | 305 | 332 | 208 | 26 | |
Swell 3 Height (m) Direction Period (s) | SE 16 | ENE 7 | SE 11 | SE 16 | E 10 | E 10 | E 16 | E 16 | NE 5 | S 18 | S 18 | SE 14 | — | — | — | — | ESE 18 | NE 4 | SE 15 | SE 15 | SE 13 |
40 | 10 | 20 | 236 | 19 | 8 | 5 | 5 | 10 | 99 | 101 | 8 | — | — | — | — | 30 | 8 | 78 | 75 | 113 | |
Wind waves Height (m) Direction Period (s) | NW 3 | W 3 | SSW 8 | SSW 11 | S 12 | — | — | NNE 3 | W 2 | NW 3 | W 3 | S 14 | — | — | — | — | ENE 3 | NE 4 | NE 3 | ENE 4 | NE 5 |
6 | 8 | 667 | 5079 | 4148 | — | — | 3 | 1 | 2 | 5 | 2736 | — | — | — | — | 5 | 17 | 3 | 7 | 68 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 19 | 121 | 135 | 138 | 0 | 0 | 33 | 0 | 0 | 0 | 11 | 43 | 172 | 54 | 0 | 135 | 0 | 11 | 33 | 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.











