Mangamaunu Surf Break

Lat Long: 42.31° S 173.75° E

Issued: 11 am 05 Jul 2026 (local time)

Forecast update in  hr  min

Today's Mangamaunu sea temperature is
11.5° C

Slightly warmer than usual

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


Mangamaunu surf forecast from 5 Jul 2026:

  • Best quality surf: Wednesday 8 Jul, 9PM (local time) - 13ft (4.0m), 11s period, ESE swell with cross-shore winds.
  • Most powerful swell: Wednesday 8 Jul, 9PM (local time) - 13ft (4.0m), 11s period, ESE swell with 3,184 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 7 Jul, 6PM (local time) - 8ft (2.5m), 10s period with E swell.

Best Forecast Surf Conditions for Mangamaunu this week:

The surf forecast for Mangamaunu over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Jul 07) at 6PM. The primary swell is predicted to be 2.5m and 10s period with a secondary swell of 0.4m and 15s. Another secondary swell of 1.6m and 8s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Mangamaunu in the next 16 days are 4.0m 11s and forecast to arrive on Wednesday (Jul 08) at 9PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 6s period and expected on Monday (Jul 06) at 6AM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 6PM (Tue 7th Jul)8ft (2.5m) 10s
Best Surf 9PM (Wed 8th Jul)13ft (4.0m) 11s
Most Powerful 9PM (Wed 8th Jul)13ft (4.0m) 11s

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


Updates in  hr  min  s Forecast update imminent

Howdy, Rusty here. Let’s talk Mangamaunu. This is an advanced-only, very consistent point break, and when it’s on, it’s a proper paddle. But you gotta know when to go, because the size varies hard.

Water temp is about 53°F, which is just a hair above the long-term average for this time of year – nothing crazy.

First surfable window is Sunday the 5th. Sunday morning shows a 5ft swell from the east, 9-second period, with a light WNW cross-off breeze. Combined energy is 345 – moderate. It’s clean but not big. Sunday afternoon drops to 4ft from the east-northeast, 10-second period, still cross-off. Both are rideable, but nothing to write home about.

Monday the 6th cranks to 6ft on the morning from the south-southwest, but the period is short at 6 seconds – messy, choppy energy. Afternoon sees 7ft, still short period, and cross winds making a cross-chop. Not the one.

Tuesday the 7th is big: 12ft in the morning from the southeast, 9-second period, energy 1967 (strong to very strong). Afternoon holds 10ft from the east, period 10 seconds, energy 3720 (very strong). Both sessions have cross winds and rain. This is expert only, and the conditions are sloppy. Wednesday and Thursday keep things at 8ft to 10ft, with cross-off winds but heavy rain – size is still only for the brave.

Now, the first real standout is Friday the 10th morning. We’ve got a 10ft swell from the east-southeast, period 11 seconds (groundswell), combined energy 2038 (very strong), and a clean cross-off wind from the west-southwest at 12 mph. That’s a big, lined-up swell on a point break – smooth, powerful, for the advanced crew. That’s your best bet in the first week.

Saturday the 11th is smaller – 6ft to 7ft – clean but more relaxed.

But here’s the weekend gem: Sunday the 12th morning. The swell drops to 5ft from the east-southeast, period 9 seconds, energy 633 (moderate), and the wind goes pure offshore from the west-southwest at 9 mph. That’s glassy, clean, and a friendly size for solid intermediate to advanced surfers. This is the pick for a fun, less intimidating session at this spot.

Monday the 13th sees 4ft to 5ft, clean, nothing to shout about. Then Tuesday the 14th morning brings a 10ft south swell, period 9 seconds, with a light offshore from the northwest at 3 mph, energy 1293 (strong). Big and clean for the experts. Wednesday the 15th is the highlight of the second week: 8ft from the southeast, period 12 seconds (very long period groundswell), morning offshore from the west-northwest at 3 mph, energy 1798 (strong). That afternoon goes glassy – 7ft from the east-southeast, period 12 seconds, zero wind. That’s as clean as it gets, but only for the advanced.

Thursday the 16th is easier – 6ft to 5ft, glassy, lovely for a paddle. Friday the 17th is small: 4ft in the morning, then 3ft in the afternoon but with a 15-second period – a long-period ghost swell, not enough push.

Then from Saturday the 18th to Monday the 20th, the wheels fall off. Swell drops to 2ft to 4ft, short periods, weak energy (53 to 306), and cross winds. The last few days are borderline flat or very ordinary.

Best of the run: Sunday the 12th morning for that offshore, clean, user-friendly size. Second shout: Friday the 10th morning for the big, powerful, clean groundswell.

Take care of yourselves out there.

Rusty.

Short Range Forecast

Heavy rain (total 207mm), heaviest during Tue morning. Very mild (max 14°C on Sun morning, min 6°C on Sun night). Winds increasing (calm on Sun morning, fresh winds from the SSW by Mon night).

Days 4-6 Weather Summary

Heavy rain (total 82mm), heaviest during Wed morning. Very mild (max 10°C on Wed morning, min 4°C on Fri night). Mainly fresh winds.

Sunday
5
Monday
6
Tuesday
7
Wednesday
8
Thursday
9
Friday
10
Saturday
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)
2
2
1
2
1
2
2
3
4
2
1
1
2
2
3
3
2
4
3
3
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.4
E
9
1.2
ENE
10
1
E
10
1.9
SSW
6
2.2
S
6
3
S
9
3.5
SE
9
3
E
10
3
E
10
3
E
11
3
E
11
3.5
ESE
10
2.5
ESE
10
3
ESE
10
3
ESE
10
3
ESE
11
2.5
ESE
10
2.3
ESE
11
1.9
E
11
2.2
SE
10
1.9
ESE
10
Wave Graph
Metric surfscale
Energy kJ
339
271
188
258
396
1247
1884
1867
1803
1836
2029
2352
1348
1526
1762
1857
1357
1167
815
993
684
Wind (km/h)
10
WNW
10
SSW
25
SW
25
WSW
25
S
30
SW
20
S
25
S
15
SW
25
S
30
S
30
S
35
SSW
35
SSW
20
SW
20
WSW
25
SW
20
WSW
20
WSW
25
SW
15
WSW
Wind State
cross-off
cross-off
cross-off
cross-off
cross
cross-off
cross
cross
cross-off
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
off
cross-off
cross-off
cross-off
High Tide
8:49PM1.42m
9:12AM1.30m
9:33PM1.40m
9:59AM1.32m
10:20PM1.40m
10:48AM1.37m
11:10PM1.41m
11:40AM1.44m
00:03AM1.43m
12:35PM1.52m
00:59AM1.46m
1:31PM1.60m
1:55AM1.50m
Low Tide
2:35PM0.28m
3:10AM0.27m
3:20PM0.28m
3:53AM0.26m
4:08PM0.27m
4:37AM0.24m
4:59PM0.26m
5:25AM0.21m
5:53PM0.23m
6:15AM0.17m
6:49PM0.19m
7:09AM0.13m
7:48PM0.14m
part cloud
cloud
cloud
light rain
mod rain
heavy rain
heavy rain
heavy rain
heavy rain
heavy rain
heavy rain
heavy rain
heavy rain
heavy rain
rain showers
part cloud
part cloud
part cloud
part cloud
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:54
7:54
7:52
7:52
7:52
7:52
7:52
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:04
5:05
5:06
5:06
5:07
5:07
5:07
 mm
1
7
77
43
40
39
19
12
18
14
16
3
Temp °C
14
13
8
8
10
9
11
11
10
10
10
9
8
7
7
7
6
5
7
8
5
Feels °C
13
11
3
3
5
2
7
7
7
5
4
2
0
-1
1
1
-1
-1
1
2
0
Swell 1
Height (m)
Direction
Period (s)
1.4
E
9
1.2
ENE
10
1
E
10
0.8
E
10
0.8
E
10
2.1
E
9
0.4
SSW
16
3
E
9
3
E
10
3
E
11
3
E
11
3.5
ESE
10
2.5
ESE
10
3
ESE
10
3
ESE
10
3
ESE
11
2.5
ESE
10
2.3
ESE
11
1.9
E
11
2.2
SE
10
1.9
ESE
10
Energy kJ
339
271
188
120
117
641
83
1426
1803
1836
2029
2352
1348
1526
1762
1857
1357
1167
815
993
684
Swell 2
Height (m)
Direction
Period (s)
0.7
NNE
7
0.4
NNE
6
0.1
S
14
0.3
SSW
19
0.5
S
17
0.5
S
16
1.7
S
8
0.4
SSW
14
0.4
SSW
13
0.2
S
18
0.4
SSW
16
0.1
S
21
0.2
S
20
0.6
S
16
0.5
S
15
0.4
SSW
15
0.3
SSW
15
0.4
S
9
0.6
S
16
Energy kJ
38
15
4
70
151
132
401
68
60
25
85
9
30
181
121
74
44
25
195
Swell 3
Height (m)
Direction
Period (s)
0.1
S
17
0.1
S
16
0.1
S
22
0.4
SSW
19
0.5
SE
7
0.1
S
19
0.1
S
21
0.3
S
19
0.4
SSW
14
Energy kJ
6
5
9
119
26
7
9
62
70
Wind waves
Height (m)
Direction
Period (s)
0.2
WNW
2
1.3
SSW
5
1.9
SSW
6
2.2
S
6
3
S
9
3.5
SE
9
3
E
10
1.3
S
7
1.4
SSE
7
1.6
S
6
2
S
7
2.5
S
8
1.9
SSW
7
1.7
SSW
6
1.4
SW
5
1.4
SSW
5
1.4
SSW
5
1.6
S
6
1.6
SSW
5
Energy kJ
1
85
258
396
1247
1884
1867
186
180
193
407
766
383
204
98
100
111
206
138
Nearest Offshore or Glassy
Rating
(10 max)
2
2
2
1
5
1
1
1
4
2
2
3
4
4
4
4
4
4
4
3
3
Distance (km)
0
0
30
12
197
124
124
130
0
154
154
173
173
185
73
19
30
0
30
30
19
Best forecast wave conditions in Kaikoura and Marlborough
Rating
(10 max)
2
2
2
2
4
4
4
4
4
3
3
Best forecast wave conditions in New Zealand
Rating
(10 max)
2
4
5
5
5
5
5
4
4
4
3
4
4
4
4
5
5
5
5
4
5
Header Global
Rating
(10 max)
5
9
7
5
6
8
7
5
5
9
8
9
9
5
5
5
5
8
7
6
8
  • Map Icons:
  • Break
  • 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 Mangamaunu Surf forecast

The above surf forecast table for Mangamaunu provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Mangamaunu can be found by selecting the local surf guide option on the grey menu. Our Mangamaunu 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 (Mangamaunu) 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 Mangamaunu 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.

Mangamaunu is 89 km (55 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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