Slaughterhouse Surf Break

Lat Long: 21.01° N 156.64° W

Slaughterhouse Surf Forecast and Surf Report

Issued: 7 pm 14 Sep 2026 (local time)

Forecast update in  hr  min

Today's Slaughterhouse sea temperature is
27.0°C
0.1° 

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


Slaughterhouse surf forecast from 15 Sep 2026:

  • Best quality surf: Tuesday 15 Sep, 5AM (local time) - 2.5ft (0.7m), 8s period, NNE swell with cross-offshore winds.
  • Most powerful swell: Thursday 17 Sep, 2PM (local time) - 7.5ft (2.3m), 9s period, ENE swell with 851 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 15 Sep, 5AM (local time) - 2.5ft (0.7m), 8s period with NNE swell.

Best Forecast Surf Conditions for Slaughterhouse this week:

The surf forecast for Slaughterhouse over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Sep 15) at 5AM. The primary swell is predicted to be 0.7m and 8s period with a secondary swell of 0.7m and 5s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Slaughterhouse in the next 16 days are 2.3m 9s and forecast to arrive on Thursday (Sep 17) at 2PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 6s period and expected on Thursday (Sep 17) at 2AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Tue 15th Sep)2.5ft (0.7m) 8s
Best Surf 5AM (Tue 15th Sep)2.5ft (0.7m) 8s
Most Powerful 2PM (Thu 17th Sep)7.5ft (2.3m) 9s

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


The Lowdown

Alright folks, Rusty here. Let’s have a sit-down about what’s on the menu at Slaughterhouse. We’re looking at a mixed bag over the next couple of weeks, so let’s break it down.

Right from the start on Monday the 14th, it’s not looking great with tiny 2ft cross-shore slop and a moderate breeze. The water’s sitting at a toasty 81°, which is about average for this time of year, so no surprises there. The first few days are a write-off for any decent paddle, so don’t bother rushing down. The mid-week Tuesday and Wednesday show a bit of size coming in (4ft to 5ft), but it’s still messy and the wind is a cross-off breeze that’s just strong enough to put a chop on it. The combined energy is weak (69 to 410), meaning not much push behind it.

Things start to get a little interesting heading into Thursday the 17th. The swell jumps to 7ft–8ft, period drops to a short 9 seconds, and energy climbs into moderate territory (775). But the wind is a fresh 19–22 mph cross-off, and the wave comment flags it as marginal at best. This is not clean, lined-up surf – it’s a bumpy, short-period mess. Definitely not one for the log.

Friday the 18th through the weekend is more of the same: 6ft–7ft of short-period E/ENE windswell with stiff cross-off breezes. The combined energy stays in the moderate 400–550 range. Honestly, this stretch looks more like a kite-surfing setup than a paddle-surfing one – the strong cross-off wind and short-period chop will mean a bumpy, blown-out surface. Beginners should steer clear, especially with the swell over 5ft. There’s a gap of several days here where I wouldn’t recommend anyone paddle out for quality waves.

Now, here’s where the outlook gets a little more interesting. Tuesday the 22nd sees the swell building to 8ft–8ft, with period stretching to a better 9 seconds on the afternoon, and the combined energy jumps into the strong range (814–1103). The wind is still strong cross-off at 22 mph, though, so it’s a wild, powerful, bumpy day – only for experienced surfers on a bigger board, and even then, expect challenging conditions.

The real standout of the entire outlook is Wednesday the 23rd. The morning offers a solid 8ft swell from the east, with a long period of 11 seconds – that’s proper groundswell energy. Combined energy is very strong at 1418, meaning there’s plenty of push. The wind is a fresh 19 mph cross-off, so it won’t be glassy, but it will be cleaner than the days prior. The longer period means longer lulls between sets, making it easier to get out the back, but at a beach setup, the long-period east swell can get a bit straight and fat. This is the day for bigger boards and a confident paddle. The marginal rating is spot on – it’s a challenge, but the potential is there for some heavy, powerful waves if you’re skilled enough.

After that, we see a steady drop-off into the weekend of the 26th and 27th, with smaller 5ft–6ft short-period swells, and the wind hanging around in the fresh cross-off range. Combined energy drops back to moderate to weak (287–492). It’s a poor run of surf, and I’d say we’re looking at a quiet finish to the 16-day window. The only faint glimmer is Monday the 28th afternoon, with 7ft ENE swell and 8 seconds, and moderate energy (599), but still marginal.

The very last entry for Tuesday the 29th afternoon shows a surprising 7ft ENE swell with a light 6 mph cross-off breeze and a cleaner, glassy-like surface. Combined energy is moderate (670) and the wave comment says expect very good surf conditions. This is a long-range call, so take it with a pinch of salt, but if it holds, that afternoon could be the best window of the whole outlook – clean, manageable size, and lighter winds.

Best on offer: Wednesday the 23rd morning for the most power and size, but you’ll need to be on your game. Tuesday the 29th afternoon is a promising long-shot for a cleaner, more fun session.

Stay patient, keep an eye on the wind, and don’t force it on the windy, bumpy days. It’s a waiting game.

Rusty.

Short Range Forecast

Light rain (total 3mm), mostly falling on Wed night. Warm (max 27°C on Thu afternoon, min 25°C on Mon night). Winds increasing (light winds from the ENE on Mon night, fresh winds from the ENE by Thu afternoon).

Days 5-7 Weather Summary

Some drizzle, heaviest during Thu night. Warm (max 27°C on Fri morning, min 25°C on Thu night). Mainly strong winds.

Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
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
0
0
0
0
1
1
0
0
0
0
0
1
0
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.7
NNE
8
0.9
NE
8
0.5
E
11
0.5
E
11
1.3
ENE
10
1.4
ENE
10
0.8
E
10
2.3
ENE
8
2.3
ENE
9
2.3
E
8
2.3
E
7
2.1
E
8
2.1
E
8
2
E
8
1.9
E
8
2.1
E
8
2
E
7
2.1
E
7
2.1
ENE
8
Wave Graph
Metric surfscale
Energy kJ
55
101
60
56
325
377
125
637
828
667
532
523
565
533
488
565
404
427
469
Wind (km/h)
15
ENE
20
ENE
25
ENE
20
ENE
25
ENE
25
ENE
25
ENE
30
ENE
35
ENE
30
E
35
ENE
40
ENE
25
E
35
ENE
30
ENE
25
E
30
ENE
25
ENE
25
E
Wind State
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
5:35AM0.70m
3:52PM0.51m
6:28AM0.66m
3:17PM0.47m
7:48AM0.63m
9:50AM0.63m
11:13AM0.66m
11:58AM0.70m
11:35PM0.35m
Low Tide
10:21PM0.12m
11:42AM0.42m
10:42PM0.14m
1:04PM0.46m
11:07PM0.17m
11:38PM0.20m
00:42AM0.24m
3:13AM0.25m
7:52PM0.30m
4:46AM0.23m
part cloud
part cloud
clear
clear
clear
clear
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:13
6:13
6:13
6:13
6:13
6:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:30
6:29
6:28
6:27
6:25
6:24
6:23
 mm
1
1
1
1
Temp °C
25
26
26
26
26
26
26
26
27
26
27
27
26
27
27
26
26
26
25
Feels °C
26
28
26
27
27
26
26
27
25
25
24
25
25
25
26
26
24
24
23
  • 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 Slaughterhouse Surf forecast

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

Slaughterhouse is 21 km (13 miles) from Wailuku. If you plan a vacation in Maui, look for hotels and other accommodation in Wailuku. Wailuku has rooms for a wide range of budgets as well as car hire and transport links.

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