Surf Forecasts:
Windmills surf forecast from 19 Aug 2026:
- Most powerful swell: Monday 24 Aug, 11PM (local time) - 5.5ft (1.7m), 8s period, ENE swell with 370 kJ wave energy.
Best Forecast Surf Conditions for Windmills this week:
The most powerful waves expected at Windmills in the next 16 days are 1.7m 8s and forecast to arrive on Monday (Aug 24) 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 1.9m 6s period and expected on Sunday (Aug 23) at 8PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11PM (Mon 24th Aug) | 5.5ft (1.7m) 8s |
Table - best surf conditions forecast for Windmills over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s break down what’s happening at Windmills (a reef setup for the advanced crew). I’ve got to be straight with you—the next week and a half looks pretty grim for a decent paddle. The whole 16-day window starts off with basically no surf worth paddling out for.
We’ve got a long gap here. The first recommendation doesn't come until Tuesday, the 1st of September. Before that, from Wednesday the 19th of August all the way through to Monday the 31st of August, the surf is poor. The swell is inconsistent, mostly short-period windswell in the 5 to 8 second range, and the wind is cross or cross-onshore with a cross-chop almost every day. It's messy out there.
The best wave energy during that first stretch only hits moderate levels (125 to 321). Even when we get some clean-looking wind on the 24th and 25th of August with clean conditions, the swell quality is just poor—short period ENE windswell at 6 ft to 7 ft isn't doing it. Honestly, with those strong winds over 25 mph, this setup looks more interesting for kite surfing than paddle surfing until things change.
Then, we finally see a shift on Tuesday the 1st of September. The swell turns on properly. We’re looking at a standout ENE groundswell hitting 7 ft to 8 ft with a very long period of 13 seconds. The combined wave energy shoots up to a strong 1563 to 1767. This is proper power. It’s going to be too big for beginners—over 8 ft is expert-only, and while this sits just under that, it’s still heavy.
That long-period groundswell (over 15 seconds? No, this is 13 seconds, so still very solid) will be powerful. At a reef break like Windmills, that long-period energy will really focus up and produce some proper shaped waves. Expect longer lulls between sets, but the sets that come through will have real punch. The only letdown is the cross-shore wind (19 to 22 mph) causing a cross-chop, which will mess with the face a bit.
Wednesday the 2nd of September is similar but a touch bigger at 8 ft, with that very long 13-second period and even stronger energy (1922). Still, the wind stays cross with a fresh breeze and lumpy conditions, keeping it from being perfect. By Thursday the 3rd of September, the swell backs off to 5 ft and the period drops to 10 seconds, with cleaner cross-offshore wind—but it’s still classed as poor surf.
So, the only real standout is Tuesday the 1st of September at Windmills. The size, the long period, the strong energy—it’s the best the whole run has to offer. Just be ready for the wind to put a bit of a chop on it. For the rest of the window, I’d say sit tight or look for something else.
Rusty.
Short Range ForecastSome drizzle, heaviest during Fri afternoon. Warm (max 26°C on Fri morning, min 24°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 7mm), mostly falling on Mon afternoon. Warm (max 26°C on Fri night, min 24°C on Sun night). Winds increasing (moderate winds from the E on Fri night, near gales from the ENE by Sun night). | ||||||||||||||||||
Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | ||||||||||||||
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 8 | ENE 7 | ENE 5 | NE 7 | NNE 6 | NNE 7 | NE 7 | NE 7 | ENE 5 | ENE 7 | ENE 7 | WNW 10 | ENE 6 | WNW 11 | NW 11 | NW 12 | ENE 6 | ENE 6 | ENE 8 |
Wave Graph | |||||||||||||||||||
122 | 99 | 68 | 126 | 26 | 30 | 47 | 47 | 90 | 88 | 125 | 34 | 146 | 50 | 30 | 66 | 263 | 291 | 361 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross-on | cross-on | cross | cross | cross | cross-off | cross | cross | cross | cross | cross | cross | cross-off | cross-off | cross-off |
High Tide | 9:04AM0.61m | 11:01AM0.64m | 12:06PM0.68m | 12:46PM0.73m | 11:07PM0.34m | 1:17PM0.77m | 00:14AM0.37m | 1:44PM0.80m | 00:56AM0.42m | ||||||||||
Low Tide | 00:24AM0.18m | 1:05AM0.20m | 2:20AM0.21m | 4:03AM0.21m | 9:02PM0.33m | 5:16AM0.17m | 8:40PM0.32m | 6:07AM0.14m | 8:43PM0.30m | ||||||||||
— | 6:05 | — | — | 6:05 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | |
6:53 | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:51 | — | — | 6:50 | — | — | 6:49 | — | |
mm | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | 4 | — | 3 | 15 |
Temp °C | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 26 | 25 | 25 | 26 | 25 | 25 | 25 | 25 |
Feels °C | 25 | 26 | 26 | 26 | 28 | 27 | 29 | 29 | 27 | 26 | 25 | 24 | 24 | 24 | 23 | 22 | 21 | 21 | 24 |
Swell 1 Height (m) Direction Period (s) | S 13 | SW 16 | SW 16 | SW 16 | E 7 | NNE 7 | NE 7 | NE 7 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | WNW 11 | NW 11 | NW 12 | NW 11 | SSW 13 | SW 13 |
30 | 41 | 68 | 41 | 27 | 30 | 47 | 47 | 93 | 159 | 90 | 88 | 86 | 50 | 30 | 66 | 30 | 69 | 43 | |
Swell 2 Height (m) Direction Period (s) | WNW 12 | W 12 | S 12 | S 12 | SW 18 | E 8 | SW 16 | SW 17 | W 11 | WNW 10 | WNW 10 | WNW 10 | NW 12 | SW 15 | SW 15 | SSW 14 | SW 14 | NW 11 | NW 11 |
14 | 25 | 11 | 11 | 79 | 28 | 95 | 100 | 35 | 34 | 33 | 34 | 40 | 80 | 56 | 82 | 49 | 30 | 29 | |
Swell 3 Height (m) Direction Period (s) | WSW 18 | S 12 | W 12 | W 11 | W 11 | SW 17 | E 8 | W 11 | S 11 | S 13 | S 13 | S 12 | WNW 10 | ESE 12 | SW 9 | SW 19 | SW 18 | SSW 18 | SW 16 |
31 | 11 | 11 | 9 | 9 | 77 | 10 | 35 | 9 | 13 | 12 | 11 | 20 | 15 | 3 | 14 | 12 | 31 | 43 | |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 7 | ENE 5 | NE 7 | NNE 6 | NNW 3 | — | — | ENE 5 | ENE 7 | ENE 7 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 8 |
122 | 99 | 68 | 126 | 26 | 1 | — | — | 90 | 88 | 125 | 166 | 146 | 166 | 215 | 198 | 263 | 291 | 361 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 15 | 15 | 15 | 2 | 15 | 5 | 4 | 4 | 15 | 9 | 15 | 15 | 15 | 18 | 150 | 150 | 37 | 28 | 17 |
Best forecast wave conditions in Maui | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
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Information about the Windmills Surf forecast
The above surf forecast table for Windmills provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Windmills can be found by selecting the local surf guide option on the grey menu. Our Windmills 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 (Windmills) 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 Windmills 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.
Windmills 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.











