Surf Forecasts:
Big Beach surf forecast from 13 Aug 2026:
- Best quality surf: Thursday 13 Aug, 8AM (local time) - 3.5ft (1.1m), 16s period, S swell with offshore winds.
- Most powerful swell: Thursday 13 Aug, 5PM (local time) - 4ft (1.2m), 15s period, S swell with 653 kJ wave energy.
- Next surfable swell (1★+): Thursday 13 Aug, 8AM (local time) - 3.5ft (1.1m), 16s 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 Thursday (Aug 13) at 8AM. The primary swell is predicted to be 1.1m and 16s period with a secondary swell of 0.6m and 12s. 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 1.2m 15s and forecast to arrive on Thursday (Aug 13) at 5PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.0m 9s period and expected on Saturday (Aug 15) at 8PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Thu 13th Aug) | 3.5ft (1.1m) 16s |
| Best Surf | 8AM (Thu 13th Aug) | 3.5ft (1.1m) 16s |
| Most Powerful | 5PM (Thu 13th Aug) | 4ft (1.2m) 15s |
Table - best surf conditions forecast for Big Beach over the next 16 days.
The Lowdown
Imperial Units
Alright, gather round. Big Beach is the only spot worth talking about for the next couple weeks. The first few days are the clear winners.
We're looking at a solid S’ly groundswell, coming right from the angle this break loves. The energy's punchy, reaching up around 719 on Thursday the 13th, so there's real power there. Swell heights are hanging in the 3 to 4 foot range, with a nice long 15 to 16 second period. That makes for a smoother, more drawn-out wave, though at a beach break it might wall up a bit straight. But the wind is clean offshore from the ENE all morning, so the surface will be glassy.
Make Thursday the 13th and Friday the 14th your target mornings. That is the absolute best on offer. The water temp is sitting pretty average for the time of year. The crowds will be a factor, it’s consistent enough that the lot will be full.
Come Saturday the 15th, the swell starts to drop. Saturday morning is still okay with offshore wind and 3 foot waves, but the energy is down to 304. By afternoon, that wind switches and freshens, making things choppy. Sunday the 16th is a full washout with strong cross-off winds – don’t even bother.
From Monday the 17th right through the next week, it’s a real slow patch. Tiny waves, low energy, and messy cross-off winds. You might get a clean little wave first thing in the morning, but it’s flat and ordinary. A long boring stretch.
Then, around Saturday the 22nd, there’s a small pulse of new SSW swell. It’s not the size of the first one, but with light winds and clean conditions, it’s a welcome sight. The morning of the 23rd is similar, with energy around 289. Monday the 24th also has a gentle offshore wind that’ll clean things up nicely. The rest of that week is wind-affected and mixed up until the 28th.
The call is simple: hit it hard on Thursday the 13th and Friday the 14th. The second week has some tiny, clean windows but nothing major.
Rusty.
Short Range ForecastLight rain (total 7mm), mostly falling on Sat night. Warm (max 29°C on Thu afternoon, min 25°C on Thu night). Winds increasing (light winds from the NE on Thu morning, strong winds from the NE by Sat night). | Days 4-6 Weather SummaryHeavy rain (total 52mm), heaviest during Sun morning. Warm (max 28°C on Sun afternoon, min 25°C on Sun morning). Winds decreasing (strong winds from the ENE on Sun morning, light winds from the NE by Tue night). | ||||||||||||||||||||
Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | |||||||||||||||
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) | S 16 | S 15 | S 15 | S 14 | S 14 | S 14 | S 13 | S 13 | S 14 | S 11 | S 8 | S 15 | S 14 | S 14 | S 13 | S 13 | S 13 | S 13 | SSW 16 | SW 16 | SW 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 597 | 653 | 636 | 423 | 411 | 297 | 284 | 280 | 192 | 295 | 187 | 347 | 333 | 257 | 170 | 123 | 119 | 117 | 103 | 71 | 129 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | cross-off | off | off | cross-off | cross-off | off | cross-off | off | cross-off | cross-off | cross-off | off | off | cross-off | off | off | off | off |
High Tide | 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 | 8:09AM0.40m | 5:51PM0.38m | 10:09AM0.39m | |||||||||
Low Tide | 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 | 1:00PM0.23m | 1:08AM0.06m | 1:51AM0.07m | ||||||||
 | |  | | |  |  | | | | |  | |  | |  | | | | | | |
 | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — |
 | — | 6:55 | — | — | 6:55 | — | — | 6:54 | — | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — |
mm | — | — | — | — | — | 1 | 2 | — | 4 | 43 | 2 | 2 | 2 | 2 | 1 | — | — | — | — | — | — |
Temp °C | 28 | 29 | 26 | 29 | 29 | 26 | 28 | 29 | 27 | 26 | 28 | 27 | 27 | 27 | 26 | 27 | 27 | 26 | 27 | 27 | 25 |
Feels °C | 28 | 30 | 26 | 29 | 29 | 26 | 27 | 27 | 25 | 23 | 30 | 29 | 29 | 29 | 27 | 28 | 28 | 27 | 29 | 28 | 26 |
Swell 1 Height (m) Direction Period (s) | S 16 | S 15 | S 15 | S 14 | S 14 | S 14 | S 13 | S 13 | S 14 | S 11 | S 8 | S 15 | S 14 | S 14 | S 13 | S 13 | E 8 | S 13 | E 8 | E 8 | SW 16 |
| kJ | 597 | 653 | 636 | 423 | 411 | 297 | 284 | 280 | 192 | 295 | 187 | 347 | 333 | 257 | 170 | 123 | 107 | 117 | 46 | 82 | 129 |
Swell 2 Height (m) Direction Period (s) | SSW 12 | W 12 | W 12 | W 12 | W 12 | W 11 | W 11 | W 11 | S 18 | S 16 | S 13 | S 6 | SSW 18 | W 11 | W 11 | SW 17 | S 13 | SW 18 | S 12 | S 12 | S 12 |
| kJ | 109 | 11 | 11 | 10 | 11 | 10 | 9 | 10 | 99 | 185 | 125 | 19 | 31 | 10 | 10 | 74 | 119 | 79 | 69 | 71 | 45 |
Swell 3 Height (m) Direction Period (s) | W 12 | SW 19 | SW 18 | SW 18 | SSW 17 | SSW 17 | S 20 | SSW 16 | W 13 | W 12 | S 16 | W 11 | W 11 | SSW 19 | SSW 19 | S 6 | SW 18 | W 12 | SSW 16 | SW 16 | W 11 |
| kJ | 11 | 14 | 13 | 13 | 30 | 30 | 30 | 25 | 30 | 26 | 127 | 23 | 22 | 37 | 37 | 7 | 79 | 26 | 103 | 65 | 22 |
Wind waves Height (m) Direction Period (s) | E 6 | E 6 | E 6 | E 6 | E 10 | E 11 | E 10 | E 10 | E 9 | E 8 | E 8 | E 7 | E 7 | E 5 | E 5 | E 5 | E 8 | E 8 | E 4 | E 8 | E 8 |
| kJ | 117 | 346 | 266 | 293 | 867 | 1701 | 2095 | 2424 | 2454 | 1320 | 776 | 343 | 269 | 104 | 83 | 86 | 153 | 160 | 11 | 131 | 99 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 11 | 0 | 2 | 0 | 11 | 103 | 34 | 114 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
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.
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