
Surf Forecasts:
Kahutara surf forecast from 18 Jul 2026:
- Best quality surf: Monday 20 Jul, 12PM (local time) - 7ft (2.1m), 19s period, S swell with glassy winds.
- Most powerful swell: Monday 20 Jul, 12PM (local time) - 7ft (2.1m), 19s period, S swell with 3,056 kJ wave energy.
- Next surfable swell (1★+): Sunday 19 Jul, 3AM (local time) - 5ft (1.6m), 17s 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 Sunday (Jul 19) at 3AM. The primary swell is predicted to be 1.6m and 17s period with a secondary swell of 1.3m and 13s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Kahutara in the next 16 days are 2.1m 19s and forecast to arrive on Monday (Jul 20) 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 6s period and expected on Friday (Jul 24) at 3PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Sun 19th Jul) | 5ft (1.6m) 17s |
| Best Surf | 12PM (Mon 20th Jul) | 7ft (2.1m) 19s |
| Most Powerful | 12PM (Mon 20th Jul) | 7ft (2.1m) 19s |
Table - best surf conditions forecast for Kahutara over the next 16 days.
The Lowdown
Alright, Rusty here, with a look at what's coming up for Kahutara.
First off, let's talk about the water. It's sitting at about 52°, which is pretty much normal for this time of year. The action starts on the 18th of July, but it's a bit of a mixed bag. There's a solid 6ft S swell rolling in, but with a light cross-onshore wind, the surface is a little bumpy. The energy is huge though, with a reading of 3193, so there's plenty of power. It's a marginal one, but it's the start of something.
The standout window kicks off on the morning of Sunday the 19th. A 5ft S swell with a 16-second period and a clean, cross-offshore SW wind. That's a proper groundswell, and it's got some serious grunt (1547). This is going to be a good session, but it's one for experienced surfers given the size.
But the real gem is Monday the 20th. The morning brings a 6ft S swell with a 19-second period and glassy, zero-wind conditions. The energy is massive at 2830, and it's dead clean. This is the best on offer. The afternoon is just as good with a 7ft swell and the same glassy conditions (2865). It's a little bigger, so it's expert territory, but if you're up for it, you're in for a treat.
The surf stays good through Tuesday the 21st with a 5ft S swell and offshore NW wind in the morning, then clean glassy conditions in the afternoon. The energy is dropping, but it's still a fun 4ft.
After that, there's a drop-off. Wednesday the 22nd has small 3ft S swell, and by Thursday the 23rd the swell is tiny and messy. We hit a real dry spell from the 23rd through the 25th, with barely any waves to speak of—just small, weak stuff. It's a lull.
Then, on the morning of Sunday the 26th, there's a pulse of 6ft S swell, but the period is a short 7 seconds, and the wind is cross-offshore. The energy is moderate (1013). It's a bit of a windswell, so it'll be a bit crumbly, but it's a step up from the flat spell.
The first week of August sees a return to clean, small waves. The 31st of July has a spike of 4ft SSW swell (1144) but with a cross-chop, so it's not perfect. The 1st of August is a clean 3ft with offshore wind, a nice option for a beginner-friendly session. The 2nd of August gets blown out by strong 30 km/h winds, so give that one a miss.
So, to sum it up: the best of the best is Monday the 20th of July. Glassy, solid, groundswell, perfect. The Sunday the 19th is a close second. After that, there's a long flat spell, then a few small, clean days to finish the run.
Rusty, signing off.
Short Range ForecastMostly dry. Very mild (max 12°C on Sat afternoon, min 8°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 14°C on Thu morning, min 9°C on Tue night). Wind will be generally light. | |||||||||||||||||||
Sat 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | ||||||||||||||
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 20 | S 18 | S 16 | S 15 | S 15 | S 19 | S 18 | S 16 | S 14 | S 13 | S 12 | S 11 | S 10 | SSW 14 | NE 5 | SSW 8 | S 8 | ESE 12 | ESE 11 | S 7 |
Wave Graph | ||||||||||||||||||||
2491 | 1741 | 1120 | 1051 | 1114 | 2502 | 2740 | 1566 | 877 | 577 | 333 | 143 | 70 | 36 | 43 | 14 | 5 | 14 | 12 | 240 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | off | cross-off | cross | glassy | glassy | glassy | cross | off | glassy | off | glassy | glassy | cross-off | cross-off | glassy | off | off | cross | cross-off |
High Tide | 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 | 12:47PM1.92m | 1:07AM1.81m | |||||||
Low Tide | 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 | 6:31AM0.65m | 7:12PM0.72m | ||||||||
— | — | 7:48 | — | — | 7:47 | — | — | 7:47 | — | — | 7:46 | — | — | 7:45 | — | — | 7:43 | — | — | |
5:14 | — | — | 5:15 | — | — | 5:15 | — | — | 5:16 | — | — | 5:17 | — | — | 5:19 | — | — | 5:20 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 5 |
Temp °C | 12 | 10 | 11 | 9 | 9 | 9 | 10 | 8 | 11 | 11 | 10 | 11 | 11 | 9 | 14 | 14 | 12 | 12 | 10 | 7 |
Feels °C | 9 | 7 | 8 | 7 | 8 | 7 | 8 | 5 | 9 | 9 | 8 | 8 | 9 | 6 | 12 | 12 | 9 | 8 | 4 | 3 |
Swell 1 Height (m) Direction Period (s) | S 20 | S 18 | S 16 | S 15 | S 15 | S 19 | S 18 | S 16 | S 14 | S 13 | S 12 | S 11 | S 10 | SSE 10 | ENE 5 | NE 6 | NE 6 | ENE 6 | ESE 11 | S 7 |
2491 | 1741 | 1120 | 1051 | 1114 | 2502 | 2740 | 1566 | 877 | 577 | 333 | 143 | 70 | 31 | 9 | 15 | 10 | 3 | 12 | 153 | |
Swell 2 Height (m) Direction Period (s) | ESE 14 | ESE 14 | ESE 13 | ESE 13 | ESE 12 | ESE 12 | ESE 12 | ESE 12 | ESE 11 | ESE 11 | SE 11 | SSW 13 | SSW 14 | SSW 14 | S 9 | SSW 8 | E 5 | NNE 6 | ENE 6 | SE 13 |
702 | 569 | 427 | 351 | 233 | 164 | 125 | 117 | 71 | 48 | 31 | 53 | 61 | 36 | 14 | 14 | 2 | 3 | 4 | 27 | |
Swell 3 Height (m) Direction Period (s) | — | S 22 | — | S 20 | — | ESE 12 | — | — | NE 4 | NE 4 | NE 5 | ESE 11 | ESE 11 | ESE 11 | SSW 13 | ESE 11 | S 8 | ESE 12 | NNE 6 | S 16 |
— | 466 | — | 68 | — | 164 | — | — | 5 | 2 | 4 | 23 | 11 | 11 | 17 | 12 | 5 | 14 | 3 | 42 | |
Wind waves Height (m) Direction Period (s) | — | — | SW 3 | — | — | — | — | — | — | — | — | SSW 2 | — | NE 3 | NE 5 | — | — | — | SSW 6 | S 7 |
— | — | 7 | — | — | — | — | — | — | — | — | 1 | — | 3 | 43 | — | — | — | 108 | 240 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 33 | 0 | 0 | 11 | 0 | 0 | 0 | 11 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 19 | 9 | 144 | 134 | 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.










