
Surf Forecasts:
Windmills surf forecast from 11 Sep 2026:
- Most powerful swell: Thursday 17 Sep, 8AM (local time) - 6.5ft (2.0m), 8s period, ENE swell with 459 kJ wave energy.
Best Forecast Surf Conditions for Windmills this week:
The most powerful waves expected at Windmills in the next 16 days are 2.0m 8s and forecast to arrive on Thursday (Sep 17) at 8AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 17s period and expected on Thursday (Sep 17) at 11PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8AM (Thu 17th Sep) | 6.5ft (2.0m) 8s |
Table - best surf conditions forecast for Windmills over the next 16 days.
The Lowdown
Alright, let’s break this down. We’ve got Windmills to work with, and to be straight with ya, it’s a bit of a tough stretch. The wind is blowing hard from the side almost every day, and the wave quality has been mostly miserable.
For the first twelve days, from Thursday the 10th of September right through to Monday the 21st, the surf is rated as poor. The swell runs from 3 ft to 6 ft, mostly out of the ENE or NE, but the swell period is short, between 6 and 9 seconds, so no real punch. The wind is screaming from the ENE at 12 to 25 mph, side-shore, making it a lumpy, bumpy mess. Water temp is 80° with a anomaly of -0.7°, so nothing unusual for the season. The combined swell energy is mostly moderate (100-300 range), but the wind chop kills any chance of quality.
Now, a few sessions start to look a little more promising. On Tuesday the 22nd of September, the morning wind turns cross-offshore with a moderate breeze, and the swell holds at 4 ft from the ENE with a period of 10 seconds – that’s a longer, more powerful groundswell. The combined energy hits 318 (moderate), and things start to clean up. It’s still only marginal, but it’s the first real sign of life. Windmills gets “often” busy, so don’t expect to be the only one out there.
Wednesday the 23rd of September afternoon is the pick of the bunch. The swell sits at 5 ft from the ENE, but check this – the period jumps to 12 seconds, proper reef-working groundswell. The combined energy is 540 (moderate to strong), and the wind eases to 9 mph cross-shore. It’s not glassy, but it’s a whole lot better than what came before. Longer period on a reef like Windmills can be a good thing, but just keep in mind that 5 ft is getting up there – more of an advanced to expert level.
Friday the 25th of September afternoon is the other window. Swell drops to 3 ft from the ENE, period goes back to 9 seconds, but the wind turns to a light cross-off from the east at 9 mph. The combined energy is 283 (moderate), and the forecast says clean conditions. That’s your best shot at a fun, manageable session. Light wind, clean faces, reef break – that’s the ticket.
So, not a classic stretch by any means. Mostly you’ll be fighting the wind or small, weak waves. But if you can pick off the 25th afternoon, you might just score a few good ones. Just know you won’t be alone out there.
Rusty.
Short Range ForecastMostly dry. Warm (max 25°C on Thu night, min 24°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Mon afternoon, min 24°C on Sun night). Mainly fresh winds. | ||||||||||||||||||
Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | ||||||||||||||
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 11 | NE 5 | NE 10 | NE 8 | NE 9 | ENE 9 | NE 9 | NE 9 | NE 8 | NE 8 | NE 8 | NE 8 | NNE 8 | NE 5 | ENE 7 | ENE 6 | ENE 6 | ENE 7 |
Wave Graph | |||||||||||||||||||
147 | 123 | 87 | 216 | 100 | 263 | 127 | 79 | 172 | 74 | 70 | 132 | 94 | 74 | 67 | 138 | 162 | 237 | 359 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross | cross | cross | cross | cross-off | cross | cross | cross | cross | cross | cross-off | cross | cross | cross-off | cross | cross | cross-off |
High Tide | 2:54AM0.65m | 3:00PM0.75m | 3:33AM0.69m | 3:21PM0.68m | 4:12AM0.72m | 3:38PM0.62m | 4:51AM0.72m | 3:50PM0.56m | 5:35AM0.70m | 3:52PM0.51m | 6:28AM0.66m | 3:17PM0.47m | |||||||
Low Tide | 9:00PM0.16m | 8:46AM0.17m | 9:20PM0.14m | 9:28AM0.23m | 9:40PM0.12m | 10:09AM0.29m | 10:01PM0.12m | 10:52AM0.36m | 10:21PM0.12m | 11:42AM0.42m | 10:42PM0.14m | 1:04PM0.46m | 11:07PM0.17m | ||||||
— | 6:11 | — | — | 6:11 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | |
6:34 | — | 6:32 | — | — | 6:31 | — | — | 6:30 | — | — | 6:30 | — | — | 6:29 | — | — | 6:28 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 |
Temp °C | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 25 | 26 | 25 | 26 | 26 | 26 | 26 | 26 | 25 |
Feels °C | 24 | 25 | 25 | 25 | 26 | 26 | 25 | 25 | 25 | 24 | 25 | 26 | 26 | 27 | 25 | 27 | 26 | 26 | 25 |
Swell 1 Height (m) Direction Period (s) | E 11 | ENE 11 | SW 15 | SW 15 | ENE 10 | SW 14 | NE 9 | NE 9 | ENE 8 | NE 8 | NE 8 | SW 22 | SW 21 | NNE 8 | SW 19 | SW 19 | SW 18 | SW 18 | SW 17 |
63 | 123 | 80 | 78 | 55 | 46 | 79 | 79 | 14 | 74 | 70 | 73 | 72 | 74 | 133 | 183 | 154 | 249 | 147 | |
Swell 2 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 9 | SW 9 | SW 15 | WSW 16 | SW 13 | ENE 9 | SW 15 | SSW 14 | SW 14 | SW 14 | SW 13 | SW 20 | E 11 | E 11 | SSW 12 | SSW 11 | SW 11 |
94 | 91 | 12 | 12 | 82 | 25 | 46 | 15 | 33 | 20 | 31 | 30 | 27 | 188 | 22 | 36 | 14 | 12 | 5 | |
Swell 3 Height (m) Direction Period (s) | NW 9 | SW 9 | NW 9 | WNW 8 | WSW 8 | SW 8 | WSW 16 | SW 15 | SSW 12 | SSW 12 | NW 12 | SW 9 | E 12 | E 12 | SSW 12 | SSW 12 | SW 8 | SW 8 | SW 9 |
14 | 13 | 12 | 7 | 7 | 3 | 25 | 55 | 14 | 14 | 6 | 3 | 12 | 25 | 15 | 15 | 3 | 3 | 3 | |
Wind waves Height (m) Direction Period (s) | ENE 7 | NE 8 | NE 5 | NE 10 | NE 8 | NE 9 | ENE 9 | ENE 3 | NE 9 | NE 4 | NE 3 | NE 8 | NE 8 | — | NE 5 | ENE 7 | ENE 6 | ENE 6 | ENE 7 |
147 | 88 | 87 | 216 | 100 | 263 | 127 | 7 | 172 | 13 | 5 | 132 | 94 | — | 67 | 138 | 162 | 237 | 359 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 15 | 15 | 12 | 12 | 9 | 9 | 12 | 2 | 12 | 15 | 9 | 18 | 15 | 5 | 15 | 15 | 15 | 15 | 15 |
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.










