Kahutara Surf Break

Lat Long: 42.43° S 173.59° E

Kahutara Surf Forecast and Surf Report

Issued: 11 am 05 Aug 2026 (local time)

Forecast update in  hr  min

Today's Kahutara sea temperature is
10.2° C
0.2° 

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


Kahutara surf forecast from 5 Aug 2026:

  • Best quality surf: Wednesday 5 Aug, 3PM (local time) - 8ft (2.5m), 11s period, SSE swell with cross-offshore winds.
  • Most powerful swell: Wednesday 5 Aug, 3PM (local time) - 8ft (2.5m), 11s period, SSE swell with 1,568 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 5 Aug, 3PM (local time) - 8ft (2.5m), 11s 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 Wednesday (Aug 05) at 3PM. The primary swell is predicted to be 2.5m and 11s period with a secondary swell of 0.2m and 18s. 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 2.5m 11s and forecast to arrive on Wednesday (Aug 05) 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 2.3m 7s period and expected on Wednesday (Aug 12) at 12PM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 3PM (Wed 5th Aug)8ft (2.5m) 11s
Best Surf 3PM (Wed 5th Aug)8ft (2.5m) 11s
Most Powerful 3PM (Wed 5th Aug)8ft (2.5m) 11s

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


The Lowdown

Alright, listen up. Rusty here, and I've been staring at the charts for our stretch of coast. The next couple of weeks are a bit of a mixed bag, so let's break it down.

We've got a decent run of surf kicking off right away, but don't expect any miracles in the long run. The water's sitting right around the seasonal average for this time of year, so no drama there.

Wednesday the 5th is where we start, and it's a proper wake-up call. Kahutara (Chatham Islands) is going to be handling a solid 10ft of southerly swell, with a period of 12 seconds. That's a lot of energy—we're talking moderate-strong power. The wind is a cross-offshore at 9 mph, which will keep it reasonably clean, but this is serious, powerful surf. This is experienced surfer territory only; beginners need to stay well clear. The swell drops a touch to 8ft in the afternoon, but it's still a beast.

Thursday the 6th is a big step down in size but a big step up in quality. The morning has 6ft of SSE swell with a light offshore breeze, and then the afternoon goes totally glassy with a 5ft SE swell. This is where the magic happens. The winds are light or calm, and the conditions are going to be clean and inviting. This is a much better window for a broader range of surfers.

Friday the 7th keeps the good times rolling. The morning brings in 5ft of S swell with a much longer 14-second period, which means some serious groundswell energy. The offshore wind will have it holding up nicely. The afternoon goes dead calm and glassy with 4ft of S swell. This is a classic, clean, lined-up sort of day.

Saturday the 8th is still fun, with 4ft of S swell and glassy conditions in the morning. The afternoon gets a bit of a cross-on breeze which will make it less appealing, but the morning session is worth it.

Sunday the 9th is another good one. The morning has 4ft of SSE swell with a light offshore wind, and the afternoon goes glassy again with a 12-second period. Consistent and clean.

From Monday the 10th, things start to get a bit ordinary. The swell drops, and the wind turns onshore or cross-shore, making conditions choppy. The energy drops right off, and the surf quality goes with it. We're looking at a flat spell that starts around Monday and runs through the middle of the week.

The models are showing a bit of a pulse around Friday the 14th in the afternoon, with 4ft of short-period S swell, but it's pretty weak. The real interest is the long-period energy showing up on Saturday the 15th and Sunday the 16th. We're talking 3ft to 4ft of S swell with periods of 19 to 20 seconds. That's some very long-period groundswell. It will be clean, but at a beach-and-reef setup like Kahutara, that long period can make it break a bit straight. It's promising, but a week out, I'd call it a hopeful maybe.

Then there's a pulse of energy for Tuesday the 18th. The morning looks good with 7ft of S swell and a clean cross-offshore wind, but the afternoon ramps up to 8ft with a stronger 16 mph wind. This is back to expert territory, and the wind might be the bigger issue.

The standout days for me are clear: Thursday the 6th and Friday the 7th. You've got clean, manageable swell, light winds, and good consistency. That's your best bet for a proper surf. The long-period stuff on the 15th and 16th is worth keeping an eye on, but it's a week out, so I'd treat it with caution.

As for the rest of the window, we'll be waiting for a proper swell. The conditions are looking sub-par for a while there, so it might be a bit of a waiting game. Things can change, but as it stands, we've got a good start and a few promising blips later on.

Rusty out.

Short Range Forecast

Mostly dry. Mild temperatures (max 9°C on Fri night, min 2°C on Wed night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 6mm), mostly falling on Sun morning. Very mild (max 11°C on Sat night, min 7°C on Sun night). Wind will be generally light.

Wednesday
5
Thursday
6
Friday
7
Saturday
8
Sunday
9
Monday
10
Tuesday
11
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
4
4
4
3
3
3
4
3
3
2
1
2
2
1
1
1
0
1
0
2
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
3
S
12
2.5
SSE
11
2.2
SSE
11
1.8
SSE
10
1.4
SE
10
1.3
SE
11
1.4
S
14
1.3
S
13
1.1
S
12
1.2
S
11
1.1
S
10
1.2
SSE
10
0.9
SSE
10
0.8
SSE
9
0.8
SSE
10
0.9
SSE
10
0.9
SSE
9
0.8
SSE
9
0.6
SE
11
0.6
SE
11
1.5
ENE
6
Wave Graph
Metric surfscale
Energy kJ
2261
1568
1100
650
416
361
721
526
314
332
250
269
166
98
118
135
138
103
104
96
175
Wind (km/h)
15
WSW
15
SW
10
WNW
5
NW
5
ENE
10
NNW
5
WNW
5
NNW
5
WNW
5
NNW
5
ENE
10
NNW
10
NNW
10
SW
5
NW
5
NW
5
ENE
5
NNW
5
NNE
0
N
10
NNW
Wind State
cross-off
cross-off
off
off
glassy
cross-off
off
glassy
off
glassy
cross-on
cross-off
cross-off
cross-off
glassy
glassy
cross-on
glassy
cross
glassy
cross-off
High Tide
9:24AM1.88m
9:51PM1.88m
10:15AM1.92m
10:45PM1.89m
11:10AM1.97m
11:40PM1.90m
12:07PM2.02m
00:36AM1.93m
1:05PM2.07m
1:34AM1.97m
2:01PM2.11m
2:31AM2.01m
2:56PM2.15m
Low Tide
3:29PM0.56m
4:03AM0.53m
4:28PM0.58m
4:59AM0.51m
5:29PM0.56m
5:55AM0.47m
6:31PM0.52m
6:49AM0.43m
7:28PM0.44m
7:43AM0.37m
8:22PM0.37m
8:40AM0.32m
9:16PM0.32m
part cloud
clear
clear
clear
clear
clear
part cloud
cloud
part cloud
part cloud
cloud
cloud
light rain
rain showers
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:31
7:30
7:28
7:28
7:26
7:24
7:24
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:30
5:31
5:32
5:34
5:35
5:36
5:37
 mm
4
2
Temp °C
7
7
3
6
7
3
8
8
9
10
10
11
11
11
9
11
11
9
12
13
12
Feels °C
2
2
-1
3
4
-1
5
5
6
8
8
9
9
8
7
9
9
7
10
12
9
  • Map Icons:
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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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