Surf Forecasts:
Waiehu beach park surf forecast from 18 Aug 2026:
- Best quality surf: Thursday 20 Aug, 8PM (local time) - 3ft (0.9m), 7s period, NE swell with glassy winds.
- Most powerful swell: Sunday 23 Aug, 11PM (local time) - 5ft (1.6m), 10s period, ENE swell with 492 kJ wave energy.
- Next surfable swell (1★+): Thursday 20 Aug, 8PM (local time) - 3ft (0.9m), 7s period with NE swell.
Best Forecast Surf Conditions for Waiehu beach park this week:
The surf forecast for Waiehu beach park over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 20) at 8PM. The primary swell is predicted to be 0.9m and 7s period with a secondary swell of 0.5m and 8s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Waiehu beach park in the next 16 days are 1.6m 10s and forecast to arrive on Sunday (Aug 23) at 11PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 11s period and expected on Sunday (Aug 23) at 5AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Thu 20th Aug) | 3ft (0.9m) 7s |
| Best Surf | 8PM (Thu 20th Aug) | 3ft (0.9m) 7s |
| Most Powerful | 11PM (Sun 23rd Aug) | 5ft (1.6m) 10s |
Table - best surf conditions forecast for Waiehu beach park over the next 16 days.
The Lowdown
Alright folks, Rusty here. Gotta be straight with you—this 16-day window for Waiehu Beach Park is a tough one to call. There’s surf on offer, but the conditions are putting a real damper on it. The key issue is a persistent cross-onshore wind that just won’t quit, ruining the surface. The swell energy does build as we go, but the quality is poor throughout.
Looking at Monday the 17th, we’re starting off small and bumpy. Waiehu Beach Park (Maui) has 5 ft of short-period ENE swell (269 combined energy) but it’s already choppy with a solid 12 mph cross-on breeze. The afternoons are the same story—no clean windows.
The next several days, from Tuesday through the following Monday, the pattern stays locked in. Swell sizes bounce around between 2 ft and 6 ft, but with that relentless cross-on wind, the surf stays poor and mostly choppy. It’s just not worth paddling out for any kind of quality session.
We hit a stretch from around the 23rd to the 27th where the swell gets bigger—pushing past 7 ft and even hitting 8 ft by the 27th. The energy ramps up into the hundreds and even four-digit range (1035 combined energy), but again, the wind is cross-on, often around 12 to 19 mph, and there are rain showers and even thunderstorms in the mix. At this size, with these winds, the setup looks more interesting for kite surfing than paddle surfing. For the average surfer, it’s just blown-out and messy.
Towards the very end, on Sunday the 30th, the period stretches out to 10 seconds, giving a bit more push, but still the wind is onshore. It’s not a complete washout, but there’s no single standout day where everything lines up. The water temp is a balmy 80°F, which is about average for this time of year, so you won’t need a thick suit.
Honestly, there are no true standouts here. The entire 16 days is a gap with no clear recommendations. We’re in a rough patch where the trades have the upper hand. It won’t stay poor forever, but for now, it’s a waiting game. Keep an eye on the wind shifts before you commit.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Mon afternoon, min 24°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Fri afternoon, min 24°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Mon 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | ||||||||||||||
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) | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | ENE 8 | ENE 8 | ENE 7 | NE 7 | NNE 7 | NE 7 | NE 7 | ENE 7 | E 6 | E 8 | ENE 6 | ENE 8 | ENE 9 | ENE 10 |
Wave Graph  | ||||||||||||||||||||
 kJ | 208 | 151 | 181 | 186 | 147 | 84 | 149 | 131 | 111 | 67 | 40 | 44 | 52 | 77 | 132 | 198 | 260 | 367 | 451 | 492 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 4:37PM0.58m | 6:48AM0.54m | 4:30PM0.52m | 8:48AM0.54m | 11:15AM0.58m | 12:08PM0.64m | 12:40PM0.69m | 10:27PM0.32m | 1:07PM0.73m | 11:42PM0.36m | ||||||||||
Low Tide | 11:30PM0.11m | 11:51AM0.42m | 11:59PM0.12m | 00:42AM0.14m | 2:05AM0.15m | 4:00AM0.14m | 8:33PM0.31m | 5:11AM0.09m | 8:04PM0.29m | |||||||||||
 |  | | | | | |  |  | | | | | | | | | | | | |
 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:07 | — | — |
 | 6:53 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — | — | 6:49 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 25 | 25 | 26 | 24 | 26 | 25 | 25 | 26 | 26 | 25 | 26 | 27 | 26 | 27 | 27 | 26 | 27 | 27 | 25 |
Feels °C | 27 | 26 | 26 | 27 | 24 | 28 | 26 | 27 | 28 | 30 | 29 | 29 | 30 | 29 | 28 | 28 | 27 | 28 | 28 | 25 |
Swell 1 Height (m) Direction Period (s) | W 11 | E 9 | WSW 17 | WNW 13 | W 12 | E 8 | W 12 | W 11 | ENE 7 | E 7 | NNE 7 | E 8 | NE 7 | E 8 | W 10 | WNW 10 | WNW 11 | WNW 12 | NW 11 | NW 11 |
| kJ | 10 | 15 | 28 | 17 | 11 | 84 | 11 | 9 | 111 | 54 | 40 | 33 | 52 | 33 | 17 | 20 | 23 | 56 | 63 | 59 |
Swell 2 Height (m) Direction Period (s) | N 8 | W 11 | W 11 | WSW 18 | NNE 7 | NNE 6 | WSW 16 | WSW 16 | WSW 18 | WSW 18 | E 8 | NE 6 | E 8 | W 10 | WSW 16 | WSW 16 | NW 14 | SW 16 | SW 15 | SW 14 |
| kJ | 1 | 9 | 2 | 30 | 5 | 14 | 27 | 26 | 30 | 30 | 33 | 11 | 21 | 18 | 25 | 25 | 47 | 10 | 9 | 8 |
Swell 3 Height (m) Direction Period (s) | W 6 | W 6 | W 13 | W 11 | SW 18 | W 12 | W 7 | NW 10 | W 11 | W 11 | ENE 7 | WSW 17 | WSW 16 | WSW 16 | SW 10 | NW 16 | WSW 16 | W 9 | W 9 | W 9 |
| kJ | 1 | 1 | 3 | 9 | 12 | 11 | 1 | 4 | 9 | 2 | 19 | 28 | 26 | 25 | 4 | 10 | 24 | 2 | 2 | 2 |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | NE 6 | ENE 8 | ENE 8 | — | NE 7 | — | NE 7 | E 5 | ENE 7 | E 6 | E 8 | ENE 6 | ENE 8 | ENE 9 | ENE 10 |
| kJ | 208 | 151 | 181 | 186 | 147 | 19 | 149 | 131 | — | 67 | — | 44 | 40 | 77 | 132 | 198 | 260 | 367 | 451 | 492 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 20 | 15 | 7 | 7 | 7 | 15 | 20 | 7 | 7 | 15 | 0 | 7 | 15 | 7 | 15 | 15 | 15 | 20 | 20 | 15 |
Best forecast wave conditions in Maui | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
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Information about the Waiehu beach park Surf forecast
The above surf forecast table for Waiehu beach park provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Waiehu beach park can be found by selecting the local surf guide option on the grey menu. Our Waiehu beach park 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 (Waiehu beach park) 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 Waiehu beach park 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.
Waiehu beach park is 5 km (3 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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