Surf Forecasts:
Big Beach surf forecast from 12 Aug 2026:
- Best quality surf: Wednesday 12 Aug, 11AM (local time) - 3.5ft (1.0m), 18s period, S swell with offshore winds.
- Most powerful swell: Thursday 13 Aug, 2AM (local time) - 4.5ft (1.3m), 16s period, S swell with 879 kJ wave energy.
- Next surfable swell (1★+): Wednesday 12 Aug, 5AM (local time) - 2.5ft (0.7m), 19s period with S swell.
Best Forecast Surf Conditions for Big Beach this week:
The surf forecast for Big Beach over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 12) at 5AM. The primary swell is predicted to be 0.7m and 19s period with a secondary swell of 0.8m and 13s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Big Beach in the next 16 days are 1.3m 16s and forecast to arrive on Thursday (Aug 13) at 2AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 5.5m 11s period and expected on Sunday (Aug 16) at 5AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Wed 12th Aug) | 2.5ft (0.7m) 19s |
| Best Surf | 11AM (Wed 12th Aug) | 3.5ft (1.0m) 18s |
| Most Powerful | 2AM (Thu 13th Aug) | 4.5ft (1.3m) 16s |
Table - best surf conditions forecast for Big Beach over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s talk about what’s on offer over the next couple of weeks.
First off, there’s a solid start right out of the gate. Big Beach (United States) is the only break in the mix, and it fires up from Wednesday, August 12. We’ve got a clean, long-period S swell rolling in, around 3 ft with a period of 18 seconds – that’s proper groundswell energy, giving the waves shape and push, but those long gaps between sets are worth noting. The combined swell energy is sitting at 879 (moderate), so there’s enough grunt to get you moving. Wind is light and offshore from the NE in the morning, glassy conditions, and the water temp feels about average for the time of year – nothing weird there. Wednesday afternoon picks up a bit more breeze but stays offshore and clean.
Thursday the 13th and Friday the 14th keep that same S swell direction, with heights between 3 ft and 4 ft, solid 15–16 second periods, and continued light to moderate offshore NE winds. Morning sessions are the standout – clean, groomed lineup. The break is very consistent, and crowds are sometimes an issue, so if you’re on it early, you’ll be in for a treat. This is the best on offer: Wednesday through Friday mornings, no question.
Saturday the 15th gets a bit tricky. The swell drops to 3 ft and the wind cranks up to 35–45 km/h from the NE. It’s still offshore, but that’s a fresh to strong breeze – making it hard to paddle into and pretty gnarly for a beginner. Afternoon gets proper strong. That’s a day to sit out, unless you’re a kiter – the setup looks more interesting for kite surfing than paddle surfing.
Sunday the 16th we get a weird mix: a morning onshore crosswind with 3 ft S swell, poor conditions. But then Sunday afternoon, the wind swings cross-offshore and the swell jumps to 5 ft, though the period drops to just 7 seconds – short-period windswell, less shape, more bumpy. There’s some energy there (528), but it’s not the clean groundswell we had earlier.
From Monday the 17th through the end of the month, the swell stays small – mostly 1 ft to 3 ft – with S to SSW direction, periods bouncing between 12 and 16 seconds. The winds are generally light to moderate, often cross-offshore or offshore, so the conditions stay clean. But the combined swell energy drops way down, mostly under 500, often under 300 – that’s weak to very weak energy. The surf is surfable but very ordinary. There’s a bit of a bump around Sunday the 23rd and Monday the 24th, with 3 ft–3 ft SSW groundswell, periods around 15 seconds, and light winds. Those are the better days in the second week, but nothing compared to that opening run.
Bottom line: Wednesday the 12th through Friday the 14th are your standout days – aim for the mornings, clean 3 ft–4 ft S groundswell, light offshore breezes, consistent waves. It’s not too big for intermediates, and the long period means you’ll get proper waves, especially at a beach break like this – just watch for those lulls between sets. After that, the surf tapers off into small, everyday stuff. Not a total write-off, but the first few days are where it’s at.
Stay stoked, get out there early.
- Rusty
Short Range ForecastMostly dry. Warm (max 28°C on Wed afternoon, min 25°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 106mm), heaviest during Sat night. Warm (max 27°C on Sat morning, min 25°C on Sat night). Winds decreasing (strong winds from the NE on Sat afternoon, light winds from the E by Sun night). | ||||||||||||||||||
Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | ||||||||||||||
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) | S 19 | S 18 | S 18 | S 16 | S 16 | S 15 | S 15 | S 14 | S 14 | S 14 | S 13 | S 13 | S 14 | S 16 | S 7 | S 15 | S 14 | S 14 | S 13 |
Wave Graph | |||||||||||||||||||
273 | 627 | 606 | 879 | 597 | 653 | 636 | 508 | 411 | 293 | 284 | 280 | 250 | 417 | 276 | 347 | 264 | 257 | 173 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | cross-off | off | off | off | off | off | off | off | off | cross | cross | cross-off | cross-off | off | cross-off | off |
High Tide | 3:03AM0.35m | 4:17PM0.66m | 3:49AM0.38m | 4:46PM0.63m | 4:34AM0.41m | 5:11PM0.59m | 5:20AM0.42m | 5:33PM0.53m | 6:07AM0.42m | 5:49PM0.48m | 7:00AM0.41m | 5:58PM0.42m | |||||||
Low Tide | 10:11PM0.12m | 8:59AM-0.05m | 10:35PM0.10m | 9:40AM-0.03m | 11:00PM0.09m | 10:19AM0.01m | 11:25PM0.07m | 10:57AM0.06m | 11:49PM0.06m | 11:35AM0.12m | 00:14AM0.06m | 12:13PM0.17m | 00:39AM0.06m | ||||||
— | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — | |
6:58 | — | 6:57 | — | — | 6:55 | — | — | 6:55 | — | — | 6:54 | — | — | 6:53 | — | — | 6:52 | — | |
mm | — | — | — | — | — | — | — | — | — | 2 | 4 | 3 | 82 | 6 | 5 | 2 | 1 | 1 | — |
Temp °C | 26 | 27 | 28 | 26 | 28 | 28 | 26 | 28 | 28 | 26 | 27 | 27 | 26 | 27 | 27 | 26 | 26 | 27 | 25 |
Feels °C | 27 | 28 | 28 | 26 | 30 | 28 | 26 | 30 | 29 | 26 | 26 | 24 | 23 | 29 | 29 | 29 | 28 | 29 | 25 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | S 18 | S 18 | S 16 | S 16 | S 15 | S 15 | S 14 | S 14 | S 14 | S 13 | S 13 | S 14 | S 16 | S 7 | S 15 | S 14 | S 14 | S 13 |
243 | 627 | 606 | 879 | 597 | 653 | 636 | 508 | 411 | 293 | 284 | 280 | 250 | 417 | 276 | 347 | 264 | 257 | 173 | |
Swell 2 Height (m) Direction Period (s) | S 19 | SSW 13 | SSW 13 | W 12 | SSW 12 | W 12 | W 12 | W 12 | W 12 | W 11 | W 11 | W 11 | S 18 | W 12 | S 13 | S 6 | S 5 | W 11 | W 11 |
273 | 222 | 218 | 25 | 111 | 11 | 11 | 10 | 11 | 10 | 9 | 22 | 99 | 26 | 125 | 45 | 5 | 21 | 9 | |
Swell 3 Height (m) Direction Period (s) | W 11 | W 13 | W 13 | — | W 12 | SW 19 | SW 18 | SW 18 | SSW 17 | SSW 17 | S 20 | SSW 16 | W 13 | SW 19 | S 16 | W 11 | W 11 | SSW 19 | SSW 19 |
9 | 30 | 28 | — | 11 | 14 | 13 | 12 | 30 | 30 | 30 | 25 | 30 | 15 | 127 | 22 | 22 | 37 | 37 | |
Wind waves Height (m) Direction Period (s) | E 5 | E 8 | E 6 | E 6 | E 6 | E 6 | E 6 | E 9 | E 11 | E 12 | E 11 | E 11 | E 10 | E 10 | E 9 | E 8 | E 8 | E 7 | E 6 |
120 | 141 | 178 | 105 | 108 | 266 | 214 | 501 | 1068 | 1678 | 1793 | 2597 | 1767 | 1568 | 609 | 331 | 320 | 267 | 134 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 114 | 121 | 121 | 72 | 30 | 0 | 0 | 0 | 0 | 4 |
Best forecast wave conditions in Maui | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
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Information about the Big Beach Surf forecast
The above surf forecast table for Big Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Big Beach can be found by selecting the local surf guide option on the grey menu. Our Big Beach 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 (Big Beach) 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 Big Beach 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.
Are you planning a vacation in Maui? If you are looking for accommodation near Big Beach, camping, hotels and condos and appartments in Maui, consider staying in Kihei which is 17 km (11 miles) away. Other places in and around Maui where you can find information about places to rent, and car hire include Wailuku which is 28 km (17 miles) away, Kahului, Lanai - Lanai and Kaunakakai - Molokai.











