Surf Forecasts:
Lahaina Breakwall/Harbour surf forecast from 20 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 5PM (local time) - 1.5ft (0.4m), 16s period, SW swell with offshore winds.
- Most powerful swell: Friday 21 Aug, 8AM (local time) - 1.5ft (0.5m), 17s period, SW swell with 140 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 5PM (local time) - 1.5ft (0.4m), 16s period with SW swell.
Best Forecast Surf Conditions for Lahaina Breakwall/Harbour this week:
The surf forecast for Lahaina Breakwall/Harbour over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 19) at 5PM. The primary swell is predicted to be 0.4m and 16s period with a secondary swell of 0.2m and 12s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Lahaina Breakwall/Harbour in the next 16 days are 0.5m 17s and forecast to arrive on Friday (Aug 21) at 8AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.0m 6s period and expected on Sunday (Aug 23) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Wed 19th Aug) | 1.5ft (0.4m) 16s |
| Best Surf | 5PM (Wed 19th Aug) | 1.5ft (0.4m) 16s |
| Most Powerful | 8AM (Fri 21st Aug) | 1.5ft (0.5m) 17s |
Table - best surf conditions forecast for Lahaina Breakwall/Harbour over the next 16 days.
The Lowdown
Alright, listen up, crew. The next stretch is looking pretty flat and ordinary. We've got a whole lot of small, weak swell on the menu, so don't get your hopes up for anything too exciting. The one spot that's got a pulse is Lahaina Breakwall/Harbour, and it's all about the long-period, groundswell energy from the southwest. The water is sitting at a comfortable 80°, which is pretty much normal for this time of year, so no surprises there.
The week kicks off on Wednesday, 19 August, with some clouds and a tiny 1 ft SW swell. The combined energy is a weak 66, so it's a real struggle. Things pick up a tiny bit on Thursday, the 20th, with a cleaner 1 ft, but still nothing to write home about. The real highlight of this whole period, and I mean the only real highlight, is Friday morning, the 21st of August. We've got a 1 ft SW swell with a period of 17 seconds, which is a long-period groundswell. The wind is glassy out of the east at 3 mph, and the combined energy jumps to 134 (moderate). It's going to be clean, glassy, and the best you'll see for a while. That's your window. It's a reef break, so that long period stuff will be working well. After that morning, it's back to the same old story.
The following week through the end of August and into September is a long, drawn-out affair of 1 ft to 1 ft swell. The wind is usually offshore or cross-off, keeping it clean, but the energy is weak, and the surf is just plain ordinary. There’s a stretch from the 29th of August all the way through to the 1st of September where conditions are just poor. You'll be scratching for anything. The south-west swell direction is a good match for the break, but it just doesn't have the guts. Crowds are sometimes a factor at the Breakwall, but with this kind of surf, you'll probably have it to yourself.
So, bottom line: if you're desperate for a paddle and can't stand being dry, aim for Friday morning, the 21st of August. It's your best bet. Otherwise, you might be better off saving your energy.
Rusty.
Short Range ForecastMostly dry. Warm (max 28°C on Fri afternoon, min 24°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Sat afternoon, min 25°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Wed 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | ||||||||||||||
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) | SW 16 | SW 16 | SW 18 | SW 17 | SW 16 | SW 17 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SSW 13 | SW 13 | SW 16 | SW 16 | SSW 15 |
Wave Graph  | ||||||||||||||||||||
 kJ | 68 | 41 | 79 | 77 | 95 | 101 | 93 | 124 | 90 | 88 | 86 | 80 | 56 | 54 | 49 | 70 | 43 | 66 | 64 | 42 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-off | off | glassy | glassy | cross-off | off | off | off | off | off | off | off | cross-off | cross-off | off | cross-off | cross-off | off |
High Tide | 12:33PM0.52m | 1:26PM0.57m | 1:58PM0.61m | 11:45PM0.28m | 2:25PM0.65m | 1:00AM0.32m | 2:48PM0.68m | 1:43AM0.37m | 3:11PM0.71m | 2:20AM0.42m | ||||||||||
Low Tide | 1:43AM0.11m | 3:06AM0.12m | 5:01AM0.11m | 9:34PM0.25m | 6:12AM0.08m | 9:05PM0.24m | 6:59AM0.04m | 9:08PM0.22m | 7:37AM0.01m | 9:20PM0.20m | ||||||||||
 |  |  | | | | | | | | | | |  | | | | | | | |
 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — |
 | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — | — | 6:49 | — | — | 6:47 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 25 | 26 | 27 | 26 | 26 | 28 | 27 | 27 | 27 | 26 | 27 | 27 | 26 | 27 | 27 | 27 | 27 | 28 | 27 |
Feels °C | 28 | 26 | 29 | 30 | 30 | 30 | 31 | 30 | 29 | 29 | 28 | 27 | 27 | 27 | 29 | 29 | 29 | 29 | 29 | 30 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 16 | NE 7 | NE 7 | NNE 7 | NE 7 | W 11 | SW 16 | SW 16 | SW 16 | WNW 13 | SW 15 | SW 15 | SW 14 | SW 14 | SSW 13 | SW 13 | SSW 12 | SSW 12 | SSW 12 |
| kJ | 68 | 41 | 46 | 67 | 40 | 47 | 57 | 124 | 90 | 88 | 65 | 80 | 56 | 54 | 49 | 70 | 42 | 50 | 28 | 28 |
Swell 2 Height (m) Direction Period (s) | S 12 | S 12 | E 7 | SW 17 | ENE 7 | SW 17 | SW 16 | W 10 | WNW 10 | WNW 12 | SW 16 | NW 12 | NW 11 | NW 11 | NW 11 | NW 12 | NW 11 | SW 16 | SW 16 | SSW 15 |
| kJ | 11 | 11 | 40 | 77 | 19 | 101 | 93 | 32 | 33 | 44 | 86 | 35 | 31 | 31 | 31 | 34 | 18 | 66 | 64 | 42 |
Swell 3 Height (m) Direction Period (s) | W 12 | W 11 | SW 18 | E 8 | SW 16 | W 11 | S 11 | E 8 | WSW 10 | S 12 | WSW 9 | WNW 10 | SW 9 | W 8 | SW 18 | SSW 18 | SW 16 | WNW 10 | WNW 10 | SSW 18 |
| kJ | 11 | 9 | 79 | 10 | 95 | 37 | 9 | 10 | 10 | 11 | 8 | 9 | 3 | 1 | 12 | 31 | 43 | 10 | 10 | 31 |
Wind waves Height (m) Direction Period (s) | ENE 5 | NE 7 | — | N 7 | — | — | ENE 5 | ENE 7 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 8 | ENE 8 | ENE 5 | ENE 8 |
| kJ | 71 | 122 | — | 8 | — | — | 91 | 83 | 113 | 193 | 206 | 263 | 283 | 190 | 193 | 183 | 206 | 201 | 126 | 161 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 2 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Maui | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
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Information about the Lahaina Breakwall/Harbour Surf forecast
The above surf forecast table for Lahaina Breakwall/Harbour provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Lahaina Breakwall/Harbour can be found by selecting the local surf guide option on the grey menu. Our Lahaina Breakwall/Harbour 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 (Lahaina Breakwall/Harbour) 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 Lahaina Breakwall/Harbour 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.
Lahaina Breakwall/Harbour is 20 km (12 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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