Kahutara Surf Break

Lat Long: 42.43° S 173.59° E

Kahutara Surf Forecast and Surf Report

Issued: 11 pm 11 Aug 2026 (local time)

Forecast update in  hr  min

Today's Kahutara sea temperature is
9.9° C
0.4° 

Kahutara surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Kahutara surf forecast from 11 Aug 2026:

  • Best quality surf: Wednesday 19 Aug, 12AM (local time) - 11ft (3.5m), 11s period, S swell with offshore winds.
  • Most powerful swell: Wednesday 19 Aug, 3AM (local time) - 11ft (3.5m), 16s period, S swell with 6,349 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 12 Aug, 6PM (local time) - 6.5ft (2.0m), 7s period with ENE 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 Wednesday (Aug 12) at 6PM. The primary swell is predicted to be 2.0m and 7s period with a secondary swell of 0.4m and 10s. 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 3.5m 16s and forecast to arrive on Wednesday (Aug 19) at 3AM. 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 Wednesday (Aug 12) at 6PM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 6PM (Wed 12th Aug)6.5ft (2.0m) 7s
Best Surf12AM (Wed 19th Aug)11ft (3.5m) 11s
Most Powerful 3AM (Wed 19th Aug)11ft (3.5m) 16s

Table - best surf conditions forecast for Kahutara over the next 16 days.


The Lowdown

G’day, Rusty here. Look, to be honest, the next couple of days at Kahutara are pretty ordinary. Swell’s small and the wind’s messy. On Tuesday the 11th, you’re looking at a weak 5ft SSE swell with a short 8-second period and a combined wave energy of just 334 – not much to get excited about, and with a light cross-onshore breeze, it’s pretty average. Wednesday the 12th is no better, with a rippled 5ft E swell and a moderate cross-shore chop. Thursday the 13th cleans up a bit with light offshore winds and a clean surface, but the swell drops right away to 3ft and there’s barely any energy (151 to 185). The water temp is about normal for this time of year at 50°.

Things start to shift on Saturday the 15th morning. That’s where the first real standout appears. While the swell height is tiny at 2ft, the period jumps to a massive 17 seconds – that’s a very long period groundswell from the south. The combined energy is 239, which is modest, but with a light cross-offshore breeze and clean lines, it’s gonna be glassy and lonely out there for an early session. This sort of groundswell loves a reef and point setup like Kahutara, so it’ll wrap in clean. Not for the beginner with that period – the sets will be spaced out and the waves will stand up quick.

Sunday the 16th morning brings a bigger pulse – 8ft from the south, but period drops to 8 seconds and the wind is a strong 25 km/h cross-offshore. Energy is solid at 744, but that onshore breeze will put a chop on it. The setup’s more interesting for kite surfing than paddle surfing that day.

Now, the real highlight. Wednesday the 19th. Clear skies, glassy conditions, and a massive 12ft south swell with a 10-second period. Combined wave energy is 4542 – that’s very strong. This is for experienced surfers only. The wave will be powerful, the paddle out a mission, but if you’ve got the nerve, it’ll be clean, thick, and potentially epic. The wind stays glassy all day. Thursday the 20th still has good energy at 7ft and a clean cross-offshore breeze in the morning, but it’s a step down.

A week later, on Wednesday the 26th, another standout pops up. A strong 6ft south swell with a very long 15-second period, and glassy conditions in the morning. Energy is 1526 – strong. This is a promising session for those who like a long period groundswell at a reef and point. Again, not for beginners – that period will make it pitchy. The afternoon gets a bit crowded with a cross-shore breeze.

There’s a gap from the 23rd to the 25th with mostly poor or marginal conditions – small, weak swell and iffy winds. But it's a fairly consistent spot, so forecasts can change.

Overall, Wednesday the 19th is your best shot for a big, clean day if you’re an expert. The Saturday the 15th morning and Wednesday the 26th morning are worth a look for clean, long-period groundswell.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 17°C on Thu afternoon, min 8°C on Tue night). Wind will be generally light.

Days 5-7 Weather Summary

Moderate rain (total 19mm), heaviest on Sat night. Very mild (max 13°C on Sat morning, min 4°C on Sun night). Wind will be generally light.

Wednesday
12
Thursday
13
Friday
14
Saturday
15
Sunday
16
Monday
17
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
1
0
3
1
0
1
1
0
1
1
0
2
2
0
2
2
1
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.1
SE
7
1.6
E
6
2.1
ENE
7
1.8
ENE
7
1.1
ENE
7
0.9
ENE
7
1
E
7
0.7
ENE
7
0.6
ENE
7
0.9
E
7
0.4
S
17
0.4
S
16
1.8
S
6
1.7
S
7
0.6
S
15
0.6
S
16
0.8
S
15
0.7
S
15
1.1
S
13
Wave Graph
Metric surfscale
Energy kJ
140
212
407
299
108
70
103
51
35
87
93
88
247
262
165
181
283
212
423
Wind (km/h)
20
NE
15
NNE
20
NE
10
NW
5
NNW
5
NNE
10
W
5
WSW
5
SE
5
N
10
SW
25
SSW
25
SW
25
WSW
25
SSW
10
W
10
W
10
S
10
WNW
Wind State
cross
cross
cross
cross-off
cross-off
cross
cross-off
glassy
on
glassy
cross-off
cross
cross-off
cross-off
cross
cross-off
off
cross
off
High Tide
3:26AM2.04m
3:51PM2.16m
4:18AM2.05m
4:45PM2.15m
5:11AM2.05m
5:38PM2.12m
6:06AM2.03m
6:31PM2.08m
7:04AM2.01m
7:25PM2.02m
8:00AM2.00m
8:21PM1.97m
Low Tide
9:16PM0.32m
9:38AM0.27m
10:10PM0.29m
10:34AM0.23m
11:06PM0.29m
11:28AM0.22m
00:00AM0.30m
12:20PM0.26m
00:53AM0.33m
1:12PM0.33m
1:43AM0.38m
2:05PM0.43m
2:33AM0.44m
part cloud
cloud
part cloud
part cloud
part cloud
cloud
part cloud
clear
clear
clear
part cloud
light rain
heavy rain
rain showers
part cloud
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:22
7:20
7:20
7:18
7:16
7:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:37
5:39
5:40
5:42
5:43
5:44
 mm
5
13
1
Temp °C
9
13
14
13
16
17
14
14
13
11
13
10
5
7
7
6
11
11
10
Feels °C
5
9
9
10
14
15
12
12
11
9
9
5
-1
0
1
2
7
7
6
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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.

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