
Surf Forecasts:
Kahutara surf forecast from 8 Aug 2026:
- Best quality surf: Monday 10 Aug, 9PM (local time) - 4.5ft (1.3m), 8s period, S swell with cross-offshore winds.
- Most powerful swell: Wednesday 12 Aug, 3PM (local time) - 7ft (2.2m), 7s period, ENE swell with 431 kJ wave energy.
- Next surfable swell (1★+): Sunday 9 Aug, 12AM (local time) - 3.5ft (1.1m), 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 12AM. The primary swell is predicted to be 1.1m and 10s period with a secondary swell of 0.3m and 17s. Another secondary swell of 0.7m and 6s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Kahutara in the next 16 days are 2.2m 7s and forecast to arrive on Wednesday (Aug 12) at 3PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.2m 7s period and expected on Wednesday (Aug 12) at 6PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Sun 9th Aug) | 3.5ft (1.1m) 10s |
| Best Surf | 9PM (Mon 10th Aug) | 4.5ft (1.3m) 8s |
| Most Powerful | 3PM (Wed 12th Aug) | 7ft (2.2m) 7s |
Table - best surf conditions forecast for Kahutara over the next 16 days.
The Lowdown
G’day, Rusty here. Let’s cut straight to it. The next 16 days are a bit of a mixed bag, but there’s definitely some quality to be found if you’re patient and pick the right windows. The first couple of days are small, but things start to build from Tuesday, and the back half of the period has some serious grunt.
The standout stretch looks like the weekend of the 16th and 17th, with a real pulse of south swell and clean conditions. Also keep an eye on the 21st, which looks powerful and clean, though the wind gets a bit tricky in the afternoon.
Alright, let’s break it down day by day.
We kick off Saturday afternoon (Aug 8) at Kahutara with a modest 3.6ft south swell, and it’s glassy and clean. The water’s at 50.0°F, which is about average for this time of year. It’s a soft start, but the conditions are there.
Sunday the 9th stays small, around 3ft, but the morning has a light cross-off breeze keeping things clean. The afternoon glass-off looks tempting, but the surf’s still pretty ordinary.
Monday the 10th drops a touch more, 2.6-3ft, with a cross-off wind in the morning turning offshore in the afternoon. Not much energy behind it, though.
Now, Tuesday the 11th is where it starts to pick up. The morning session sees 4.3ft of south swell with a light glassy wind – that’s your first proper surf of the week. The period is a short 8 seconds, so it’ll be a bit lumpy, but it’s clean. The afternoon gets crossed up with a cross-on breeze, so morning is the call.
Wednesday the 12th is a big step up. The swell jumps to 6.2ft in the morning, building to 7.2ft by the afternoon, but the direction shifts to the ENE with a short, 6-7 second period. That’s a lot of lumpy, disorganised energy. The wind stays light and cross-off, so it will be clean, but this is more for the experienced crew. This is getting serious.
Thursday the 13th drops back down to 3.6-4.3ft with a mix of ENE and E swell. The morning is clean with a light cross-off, but the afternoon is crossed up and a bit mushy. Not a standout.
Friday the 14th sees 3.6ft of east swell, with a glassy morning that looks inviting. The period is a touch longer at 9 seconds, giving it a bit more push. The afternoon gets a bit messy with a cross-shore wind.
Saturday the 15th is a write-off for the most part. Only 3.3ft of east swell, and the S wind picks up strong in the afternoon, bringing rain and choppy conditions. It’s a beach and reef setup, and with this wind, it might be more interesting for the kite crew than for us paddle surfers.
Now, here’s where it gets good. Sunday the 16th is a proper standout. The morning sees 5.2ft of south swell with a clean offshore wind, and the energy is solid. But the afternoon is the real gem: 7.2ft of south swell with a 10-second period, light cross-off wind, and the combined energy is massive. That’s strong, clean, and powerful. This is the session to circle on the calendar.
Monday the 17th keeps the good times rolling. The morning has 4.3ft of south swell with glassy conditions – perfect. The afternoon drops to 2ft, but the period stretches out to a very long 16 seconds. That’s a true groundswell, and while it’s small, it’s clean and glassy. That long period will make it push hard at the reef.
Tuesday the 18th is a mess. Strong SW winds at 19-22 mph blow through, making things uncomfortable despite the swell. The morning is small at 3.3ft, the afternoon bumps to 5.2ft, but with that wind, it’s not worth it.
Wednesday the 19th brings the biggest swell of the period – 9.8ft in the morning with a 10-second period. That’s a serious amount of water, and the combined energy is huge. This is only for experts, and even then, it’s going to be heavy and challenging. The wind is a fresh cross-off, so it’ll be clean, but it’s a beast. The afternoon drops to 6.2ft, still sizeable.
Thursday the
Short Range ForecastMostly dry. Very mild (max 14°C on Sun afternoon, min 8°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 15°C on Wed afternoon, min 9°C on Tue night). Wind will be generally light. | |||||||||||||||||||
Sat 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | ||||||||||||||
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 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 9 | SSE 9 | SE 12 | SSE 8 | SSE 8 | SE 7 | ENE 6 | ENE 7 | ENE 7 | E 7 | ENE 7 | ENE 8 | ENE 9 | E 9 | E 9 |
Wave Graph | ||||||||||||||||||||
250 | 250 | 169 | 132 | 109 | 124 | 92 | 175 | 232 | 183 | 152 | 275 | 431 | 114 | 131 | 167 | 181 | 189 | 199 | 202 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | cross-off | glassy | off | cross-off | off | cross-off | glassy | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross | cross-off | glassy | cross | cross-off |
High Tide | 00:36AM1.93m | 1:05PM2.07m | 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 | ||||||||
Low Tide | 6:31PM0.52m | 6:49AM0.43m | 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 | |||||||
— | — | 7:26 | — | — | 7:24 | — | — | 7:24 | — | — | 7:22 | — | — | 7:20 | — | — | 7:20 | — | — | |
5:34 | — | — | 5:35 | — | — | 5:36 | — | — | 5:37 | — | — | 5:37 | — | — | 5:39 | — | — | 5:40 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 11 | 10 | 13 | 14 | 13 | 10 | 10 | 9 | 10 | 11 | 10 | 14 | 15 | 13 | 15 | 15 | 13 | 14 | 14 | 12 |
Feels °C | 9 | 8 | 11 | 12 | 9 | 7 | 7 | 6 | 7 | 7 | 8 | 11 | 13 | 11 | 12 | 12 | 11 | 12 | 12 | 10 |
Swell 1 Height (m) Direction Period (s) | S 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 9 | SSE 9 | S 8 | SSE 8 | SSE 8 | SE 7 | E 7 | ENE 7 | ENE 7 | E 7 | ENE 7 | ENE 8 | ENE 9 | E 9 | E 9 |
250 | 250 | 169 | 132 | 109 | 124 | 92 | 165 | 232 | 183 | 152 | 168 | 254 | 114 | 131 | 167 | 181 | 189 | 199 | 202 | |
Swell 2 Height (m) Direction Period (s) | SE 11 | S 17 | NE 5 | NE 6 | E 6 | ENE 6 | SE 12 | SE 12 | SE 12 | SE 11 | SE 11 | SE 10 | SSE 10 | ESE 7 | SSE 9 | SE 11 | SSE 10 | ESE 13 | ESE 14 | ESE 14 |
43 | 49 | 35 | 18 | 17 | 8 | 51 | 175 | 108 | 46 | 29 | 25 | 31 | 21 | 8 | 29 | 9 | 17 | 19 | 20 | |
Swell 3 Height (m) Direction Period (s) | SSE 14 | NE 6 | SSE 13 | E 5 | NNE 5 | S 16 | ENE 6 | S 15 | S 13 | S 18 | S 12 | S 11 | SE 15 | SSE 9 | ESE 14 | ESE 13 | ESE 13 | S 15 | S 15 | S 16 |
18 | 2 | 58 | 8 | 2 | 19 | 4 | 17 | 4 | 6 | 11 | 9 | 8 | 8 | 19 | 18 | 17 | 18 | 18 | 19 | |
Wind waves Height (m) Direction Period (s) | — | NNE 6 | NNE 5 | NNE 6 | — | SSW 3 | SSW 5 | SSW 6 | — | — | NE 4 | ENE 6 | ENE 7 | NE 7 | NE 7 | NE 7 | NE 7 | — | SW 3 | S 5 |
— | 29 | 75 | 128 | — | 5 | 22 | 81 | — | — | 37 | 275 | 431 | 279 | 293 | 357 | 418 | — | 1 | 61 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 121 | 33 | 0 | 0 | 0 | 0 | 11 | 0 | 0 | 9 | 0 |
Best forecast wave conditions in Kaikoura and Marlborough | ||||||||||||||||||||
Best forecast wave conditions in New Zealand | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
Latest Updates
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.











