Muriwai Beach Surf Break

Lat Long: 36.85° S 174.43° E

Muriwai Beach Surf Forecast and Surf Report

Issued: 11 pm 12 Sep 2026 (local time)

Forecast update in  hr  min

Today's Muriwai Beach sea temperature is
14.9°C
0.6° 

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


Muriwai Beach surf forecast from 12 Sep 2026:

  • Best quality surf: Sunday 13 Sep, 6PM (local time) - 13ft (4.0m), 17s period, SW swell with cross-onshore winds.
  • Most powerful swell: Sunday 13 Sep, 9AM (local time) - 15ft (4.5m), 17s period, SW swell with 10,655 kJ wave energy.
  • Next surfable swell (1★+): Sunday 13 Sep, 6PM (local time) - 13ft (4.0m), 17s period with SW swell.

Best Forecast Surf Conditions for Muriwai Beach this week:

The surf forecast for Muriwai Beach over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Sep 13) at 6PM. The primary swell is predicted to be 4.0m and 17s period. The wind is predicted to be cross-onshore as the swell arrives.

The most powerful waves expected at Muriwai Beach in the next 16 days are 4.5m 17s and forecast to arrive on Sunday (Sep 13) at 9AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Thursday (Sep 17) at 9PM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 6PM (Sun 13th Sep)13ft (4.0m) 17s
Best Surf 6PM (Sun 13th Sep)13ft (4.0m) 17s
Most Powerful 9AM (Sun 13th Sep)15ft (4.5m) 17s

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


The Lowdown

Righto, grab a coffee, let’s see what Muriwai’s got cookin’ for us over the next couple of weeks. It’s a bit of a wild ride ahead, so strap in.

First up, we’re looking at a pretty lengthy dry spell – there's no good surf on the cards for the first four days, through to the end of Wednesday the 16th. The big fella is just too angry out there, with huge SW groundswell (17-second period) coming in over 15 ft, and a nasty cross-onshore wind turning it into a washing machine. That’s a solid pass for paddling; you’d need a death wish, not a surfboard. The combined energy is absolutely pumping at over 10,000, which is extreme, but it’s all messy and blown out.

Things finally start to show a glimmer on Thursday morning, the 17th. We get a drop in size to a still-chunky 6 ft from the WSW, but the real story is the wind swinging NNE and going cross-offshore. The combined energy (984) is moderate, but the wave comment says “clean,” and for Muriwai, a bit of a cross-off breeze is a blessing. It’s not the best quality, but it’s the first real window to paddle out without getting smashed.

Moving into Friday the 18th, the morning looks cross-shore and a bit lumpy with an 8 ft WSW swell. But the standout, and I mean the real standout of this whole outlook, is Friday afternoon. We’ve got a 10 ft swell, still from the WSW, combined energy of 4246 (strong), but the wind is NNE at 12 mph going cross-off, and it’s *clean*. The forecast says it might be too big for this break, but for experienced surfers, this is game on. That long-period groundswell (16 seconds) is going to hold up well on the bank, and with clean conditions, those sandbars are gonna line up. This is the session to circle on the calendar.

Now, the shine wears off fast. Saturday the 19th brings in a full-on westerly storm – rain, howling 19 mph cross-onshore wind, and a 10 ft bumpy mess. It’s a no-go. That pattern of big, windy, and cross-onshore sticks around right through the middle of the second week, with swell heights holding between 10 ft and 13 ft, and combined energy regularly over 5,000. It’s pure chaos.

For the adventurous expert crew, Monday the 21st morning and Wednesday the 23rd afternoon have the notes saying “wind and tide favorable, but too big” – that’s code for “you better be on a gun and know what you’re doing.” The Wednesday arvo has a huge 15 ft SW swell with that massive 15-second period, and moderate cross-shore wind. It’s a freight train.

Then, on Thursday the 24th, we finally catch a break in the wind. Thursday morning is a beauty: a 13 ft WSW groundswell, but the wind goes light SE, which is cross-offshore. The combined energy is a massive 6963 (strong), but the comment says “too big for this break” with “clean” conditions. This is a *very* big, very clean, heavy swell. Only for the pros who know the rip bowls.

The last few days, from the 26th to the 28th, turn back to poor with onshore winds and solid lumpy swell. It’s a messy end to the run.

So, to boil it down: The whole forecast is big and challenging. The single best bet for the average punter who wants a clean, ridable wave is Friday 18th September afternoon at Muriwai Beach – that 10 ft WSW with cross-offshore NNE breeze is as good as it gets in this window. For the big-wave chargers, Thursday 24th September morning with that 13 ft clean, cross-off swell is the one, but you’ve gotta earn it.

Keep a close eye on those wind shifts – with that much swell in the water, the right breeze can turn a grim day into an epic one.

- Rusty

Short Range Forecast

Some drizzle, heaviest during Mon morning. Very mild (max 14°C on Sun morning, min 12°C on Sat night). Mainly fresh winds.

Days 5-7 Weather Summary

Light rain (total 8mm), mostly falling on Fri morning. Very mild (max 17°C on Thu morning, min 11°C on Wed night). Mainly fresh winds.

Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
!
!
0
!
2
1
2
1
0
1
2
2
2
2
!
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
4.5
SW
16
4.5
SW
17
4
SW
16
3.5
SW
16
3
SW
16
3
SW
15
3
SW
14
2.4
SW
14
2.3
SW
14
1.9
SW
14
1.6
SW
13
1.2
SW
13
1.4
WSW
13
1.8
WSW
12
2.1
WSW
16
2
WSW
14
2.4
WSW
17
3
WSW
16
2.5
WSW
15
Wave Graph
Metric surfscale
Energy kJ
10023
10655
9507
7122
5076
4413
3236
2423
2144
1368
880
501
630
984
2082
1390
3315
3827
3204
Wind (km/h)
25
SW
25
SW
25
SW
20
SW
15
SW
20
SSW
10
SSW
15
SSW
15
SW
15
WSW
10
W
15
WNW
15
NNW
15
NNE
25
NNE
30
NE
25
N
20
NNE
15
SSW
Wind State
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
cross-on
cross-off
cross-off
cross-off
cross
cross-off
cross
High Tide
10:18PM3.02m
10:39AM2.92m
10:54PM2.95m
11:15AM2.86m
11:30PM2.82m
11:51AM2.75m
00:06AM2.65m
12:29PM2.59m
00:44AM2.45m
1:09PM2.42m
1:26AM2.26m
1:57PM2.24m
2:19AM2.08m
Low Tide
4:33AM-0.04m
4:49PM0.04m
5:10AM0.03m
5:27PM0.15m
5:46AM0.16m
6:05PM0.31m
6:22AM0.33m
6:44PM0.50m
7:01AM0.53m
7:27PM0.69m
7:46AM0.71m
8:19PM0.87m
cloud
part cloud
part cloud
clear
light rain
part cloud
cloud
part cloud
part cloud
cloud
cloud
part cloud
cloud
cloud
light rain
rain showers
light rain
light rain
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:26
6:24
6:22
6:20
6:20
6:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:10
6:10
6:12
6:13
6:14
6:15
 mm
1
1
2
3
2
1
Temp °C
13
14
14
13
14
13
13
13
13
13
13
13
13
17
16
13
12
11
12
Feels °C
8
8
9
9
11
9
11
10
10
10
10
9
10
12
11
8
6
7
9
  • 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 Muriwai Beach Surf forecast

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

Muriwai Beach is 10 km (6 miles) from the city of Waitakere. If you plan a holiday in Auckland, look for hotels and other accommodation in Waitakere. Waitakere has rooms for a wide range of budgets as well as car hire and transport links.

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