Surf Forecasts:
Slaughterhouse surf forecast from 1 Aug 2026:
- Best quality surf: Tuesday 4 Aug, 5PM (local time) - 5ft (1.5m), 11s period, ENE swell with cross-offshore winds.
- Most powerful swell: Saturday 1 Aug, 11PM (local time) - 10ft (3.0m), 8s period, ENE swell with 1,026 kJ wave energy.
- Next surfable swell (1★+): Tuesday 4 Aug, 5PM (local time) - 5ft (1.5m), 11s period with ENE 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 (Aug 04) at 5PM. The primary swell is predicted to be 1.5m and 11s period with a secondary swell of 0.2m and 13s. 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 3.0m 8s and forecast to arrive on Saturday (Aug 01) at 11PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 5s period and expected on Wednesday (Aug 05) at 8PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Tue 4th Aug) | 5ft (1.5m) 11s |
| Best Surf | 5PM (Tue 4th Aug) | 5ft (1.5m) 11s |
| Most Powerful | 11PM (Sat 1st Aug) | 10ft (3.0m) 8s |
Table - best surf conditions forecast for Slaughterhouse over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s on the cards for the only spot in the mix – Slaughterhouse. It’s a pretty tough stretch ahead, so I’ll keep it real.
This forecast kicks off on Friday, July 31st, and honestly, there’s a rough start. The first few days are a write-off. We’re looking at a solid week of poor surf conditions with just a flicker of hope later on. The main issue is the wind – a persistent cross-off breeze from the E/ENE blowing at 18 to 22 mph, which is just too strong for clean, workable waves, even if the swell is pumping. And the swell does pump early on, but it’s messy.
The standout period, and really the only window worth paddling out, is Tuesday, August 4th. That afternoon things finally line up. The swell drops to 5 ft from the ENE with a period of 11 seconds – that’s proper groundswell energy, which will give the waves some shape and punch. The combined energy sits at 509 (moderate), and the wind eases off to a gentle 9 mph cross-off. That’s light enough to get clean, glassy faces. For a beginner spot like this, and given it’s inconsistent, this is a rare, decent window. The water is a warm 80°F, about average for the time of year.
Before that Tuesday, Sunday August 2nd and Monday August 3rd are marginal. Sunday morning has 8 ft of ENE swell at 8 seconds, but with a 19 mph cross-off wind, it’s going to be a bumpy, blown-out mess, only really for experts if they’re desperate. The energy is high (973 on Sunday morning), but the quality is poor.
After Tuesday, it’s back to square one. From Wednesday August 5th right through to Saturday August 15th, the wind picks right back up to 15–22 mph, and the surf quality drops to “poor” or “marginal” at best. The swell hangs around 4 ft to 7 ft, but with that relentless cross-off wind, it’s just not worth the effort. The combined energy stays in the 200–600 range, but the wind ruins it.
So, bottom line: If you can only get in the water once, make it the afternoon of Tuesday, August 4th. That’s your best shot. The rest of the 16-day window is a long, frustrating gap of poor conditions. It’s a tough one for Slaughterhouse, but that’s how it goes sometimes.
– Rusty
Short Range ForecastSome drizzle, heaviest during Mon morning. Warm (max 26°C on Fri afternoon, min 24°C on Sun night). Mainly fresh winds. | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Mon night. Warm (max 26°C on Mon afternoon, min 25°C on Mon afternoon). Wind will be generally light. | |||||||||||||||||||
Fri 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | ||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | E 7 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 12 | ENE 11 | ENE 11 | ENE 10 | ENE 9 | ENE 9 | ENE 8 | E 8 | ENE 7 | E 6 |
Wave Graph  | ||||||||||||||||||||
 kJ | 604 | 906 | 923 | 1009 | 844 | 763 | 627 | 560 | 370 | 306 | 950 | 572 | 496 | 407 | 158 | 311 | 59 | 191 | 208 | 235 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | 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 | cross-off |
High Tide | 4:21PM0.82m | 4:15AM0.51m | 4:42PM0.78m | 5:03AM0.53m | 5:01PM0.72m | 6:01AM0.55m | 5:19PM0.66m | 7:14AM0.58m | 5:32PM0.59m | 8:52AM0.62m | 5:22PM0.53m | 10:39AM0.68m | ||||||||
Low Tide | 11:01PM0.24m | 9:54AM0.18m | 11:23PM0.22m | 10:31AM0.26m | 11:48PM0.19m | 11:16AM0.34m | 00:18AM0.17m | 12:17PM0.44m | 00:55AM0.15m | 2:25PM0.51m | 1:46AM0.14m | 2:57AM0.12m | ||||||||
 |  | | | | | | |  | |  |  | |  | | | | | | | |
 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — |
 | 7:05 | — | — | 7:05 | — | — | 7:04 | — | — | 7:04 | — | — | 7:02 | — | — | 7:02 | — | — | 7:01 | — |
mm | — | — | — | — | — | — | — | — | 1 | — | 2 | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 25 | 25 | 26 | 25 | 26 | 26 | 25 | 25 | 26 | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 25 | 26 | 25 |
Feels °C | 23 | 22 | 21 | 22 | 22 | 24 | 24 | 23 | 25 | 26 | 24 | 27 | 27 | 27 | 28 | 26 | 27 | 25 | 25 | 25 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 15 | SW 14 | SW 14 | E 14 | E 14 | E 13 | E 13 | E 13 | E 12 | N 7 | ENE 11 | ENE 11 | SW 16 | ENE 9 | NNE 8 | ENE 8 | SW 14 | SW 14 | SW 14 |
| kJ | 85 | 77 | 51 | 47 | 186 | 183 | 176 | 125 | 119 | 104 | 4 | 572 | 496 | 38 | 158 | 14 | 59 | 33 | 32 | 33 |
Swell 2 Height (m) Direction Period (s) | N 8 | N 8 | N 8 | N 11 | SW 14 | N 9 | N 9 | SW 13 | N 8 | N 7 | W 12 | SSW 12 | W 13 | SSW 11 | NNE 9 | SW 15 | SW 15 | W 13 | NNW 8 | NNW 7 |
| kJ | 21 | 11 | 5 | 9 | 48 | 27 | 25 | 26 | 10 | 17 | 11 | 14 | 13 | 12 | 16 | 36 | 55 | 13 | 6 | 11 |
Swell 3 Height (m) Direction Period (s) | SSW 12 | SSW 12 | S 12 | W 16 | N 10 | SW 14 | SW 13 | N 8 | SSW 13 | SSW 12 | SSW 12 | SSW 17 | SSW 17 | W 12 | SSW 11 | SSW 11 | NNE 8 | N 8 | W 12 | W 11 |
| kJ | 15 | 14 | 11 | 5 | 17 | 51 | 44 | 12 | 16 | 15 | 14 | 28 | 28 | 11 | 12 | 11 | 6 | 5 | 11 | 10 |
Wind waves Height (m) Direction Period (s) | E 7 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 12 | — | — | ENE 10 | E 5 | ENE 9 | E 5 | E 8 | ENE 7 | E 6 |
| kJ | 604 | 906 | 923 | 1009 | 844 | 763 | 627 | 560 | 370 | 306 | 950 | — | — | 407 | 45 | 311 | 83 | 191 | 208 | 235 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 13 | 15 | 36 | 13 | 16 | 16 | 219 | 16 | 16 | 16 | 24 | 16 | 0 | 13 | 16 | 13 | 16 | 13 | 16 | 16 |
Best forecast wave conditions in Maui | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
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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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