
Surf Forecasts:
Big Beach surf forecast from 11 Aug 2026:
- Best quality surf: Wednesday 12 Aug, 11AM (local time) - 3.5ft (1.0m), 18s period, S swell with cross-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★+): Tuesday 11 Aug, 11AM (local time) - 2.5ft (0.8m), 14s period with SSW 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 Tuesday (Aug 11) at 11AM. The primary swell is predicted to be 0.8m and 14s period with a secondary swell of 0.2m and 10s. The wind is predicted to be cross-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 offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.4m 11s period and expected on Sunday (Aug 16) at 2PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Tue 11th Aug) | 2.5ft (0.8m) 14s |
| 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, surfers, Rusty here. Let’s look at the forecast for Big Beach. There’s a bit of a quiet start, but we’ve got a solid run of swell coming through.
Right now, there’s not much to get excited about. The first real window opens up on Tuesday, August 11th, with some small 2.6ft swell from the SSW. That’s a pretty weak start, but the water temp is sitting at a warm 80.4°, which is pretty much normal for this time of year, so you won’t need a thick suit.
The real fun kicks off on Wednesday, August 12th. We’ve got a nice 3.3ft groundswell from the South, with a long period of 18 seconds. That’s packing moderate wave energy (879). The wind is a light offshore NNE in the morning, making for clean conditions. This is a standout morning. The afternoon holds up with a moderate offshore, too.
Thursday, August 13th is another beauty. The swell bumps up just a touch to 3.6ft from the South, still with a long 16-second period. The wind is light and offshore again from the NE. It’s clean and has about 719 units of swell energy. It doesn’t get much better for a spot like this.
Friday, August 14th is still good with 3.3ft S swell, dropping off slightly but still with offshore winds. After that, the quality dips. Saturday, August 15th sees the wind pick up strong from the NE at 18.6 mph, making for messy conditions despite the offshore direction. It gets a bit mushy through the weekend.
There’s a gap of pretty ordinary, small surf from Monday, August 17th through to the end of the week. The swell drops to under 2.6ft, and we’ve got risk of t-storms and rain. It’s surfable, but nothing to write home about.
But hang in there. Sunday, August 23rd we start to see a pulse of new SSW groundswell coming back, with 3.0ft and a 15-second period. It’s still small but clean.
Monday, August 24th is when it gets interesting again. The afternoon brings 3.3ft from the South with a very long 17-second period and clean conditions. The swell energy is building (766).
The real standout in the second week is Tuesday, August 25th. The morning kicks off with 3.9ft SSW swell and a 16-second period, with strong energy (1027). The afternoon gets even better: 3.0ft from the South with an extra-long 19-second period and the energy cranks up to 1187. That’s a massive spike in energy. The wind stays light and cross-off. This is the best day on offer for the whole forecast period, even if it is a few weeks out.
Wednesday, August 26th holds solid with 4.6ft S swell and 17-second period, though the wind picks up a notch in the afternoon, making it a bit less perfect than Tuesday.
Best Bet: Tuesday, August 25th morning through afternoon. The combination of solid 3.9 to 3.0ft swell, very long period, and clean conditions makes it the standout. The energy numbers are huge for this break. Get in the water.
Short Range ForecastMostly dry. Warm (max 28°C on Tue afternoon, min 25°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 29mm), heaviest during Sun night. Warm (max 29°C on Sat afternoon, min 25°C on Sat night). Winds increasing (light winds from the NE on Fri morning, fresh winds from the N by Sun afternoon). | ||||||||||||||||||||
Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | |||||||||||||||
AM | 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) | SSW 14 | SSW 14 | 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 13 | S 15 | S 14 | S 14 | S 13 |
Wave Graph | |||||||||||||||||||||
280 | 269 | 273 | 627 | 606 | 879 | 597 | 653 | 636 | 423 | 411 | 293 | 284 | 280 | 246 | 417 | 168 | 347 | 264 | 257 | 171 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | off | cross-off | off | off | off | off | off | off | off | off | off | off | off | off | cross-on | cross-off | cross-off | cross-off | cross-off |
High Tide | 3:46PM0.67m | 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 | 8:14AM-0.06m | 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 | — | — | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — | |
— | 6:58 | — | — | 6:57 | — | — | 6:55 | — | — | 6:55 | — | — | 6:54 | — | — | 6:53 | — | — | 6:52 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | 2 | 3 | 4 | 19 | 5 | 2 | 5 |
Temp °C | 27 | 28 | 26 | 28 | 28 | 26 | 28 | 28 | 26 | 27 | 28 | 26 | 27 | 29 | 27 | 26 | 26 | 26 | 27 | 27 | 26 |
Feels °C | 28 | 28 | 26 | 30 | 28 | 26 | 29 | 27 | 26 | 28 | 28 | 26 | 26 | 29 | 27 | 25 | 25 | 26 | 29 | 29 | 28 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 14 | SSW 14 | S 18 | S 18 | S 16 | S 16 | S 15 | S 15 | S 14 | S 14 | S 14 | E 11 | E 11 | S 14 | E 11 | E 11 | ENE 11 | ENE 11 | S 14 | S 13 |
280 | 269 | 243 | 627 | 606 | 879 | 597 | 653 | 636 | 423 | 411 | 293 | 577 | 607 | 246 | 764 | 778 | 561 | 408 | 257 | 171 | |
Swell 2 Height (m) Direction Period (s) | W 10 | SSW 21 | S 19 | SSW 13 | SSW 13 | W 12 | SSW 12 | W 12 | W 12 | W 12 | E 9 | ESE 13 | S 13 | S 13 | S 18 | S 16 | S 13 | S 15 | S 14 | ENE 10 | E 8 |
8 | 85 | 273 | 222 | 218 | 25 | 111 | 11 | 11 | 10 | 164 | 31 | 284 | 280 | 99 | 417 | 168 | 347 | 264 | 125 | 34 | |
Swell 3 Height (m) Direction Period (s) | S 21 | W 10 | W 11 | W 13 | W 13 | — | W 12 | SW 19 | SW 18 | SW 18 | W 12 | W 11 | W 11 | W 11 | W 13 | WNW 12 | S 16 | WNW 11 | WNW 11 | SSE 4 | WNW 11 |
36 | 18 | 9 | 30 | 28 | — | 11 | 14 | 13 | 12 | 11 | 10 | 9 | 22 | 30 | 29 | 127 | 25 | 24 | 3 | 23 | |
Wind waves Height (m) Direction Period (s) | E 7 | E 8 | E 5 | E 8 | E 8 | E 6 | E 8 | E 6 | E 6 | E 6 | E 5 | E 9 | E 11 | E 5 | E 12 | ENE 11 | ENE 11 | — | — | SSW 4 | SSE 5 |
210 | 186 | 104 | 116 | 141 | 143 | 186 | 158 | 216 | 172 | 67 | 408 | 901 | 52 | 1324 | 1143 | 1292 | — | — | 24 | 45 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 11 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 2 | 115 | 121 | 121 | 4 | 75 | 103 | 0 | 11 | 0 |
Best forecast wave conditions in Maui | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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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.











