
Surf Forecasts:
Big Beach surf forecast from 10 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★+): Monday 10 Aug, 2AM (local time) - 1.5ft (0.5m), 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 Monday (Aug 10) at 2AM. The primary swell is predicted to be 0.5m and 16s period with a secondary swell of 0.5m 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 1.3m 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 3.5m 13s period and expected on Saturday (Aug 15) at 8PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Mon 10th Aug) | 1.5ft (0.5m) 16s |
| 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, let's get into it. The pattern here is a slow burner with a real payoff later on. We’ve got a solid window of fun, clean surf starting mid-week, but the real standout is a date to circle on the calendar. The water temp is about average for this time of year, so no need for a thick wetsuit if you’ve got a spring suit.
Monday, August 10th kicks things off with some small but clean waves at Big Beach. Morning session is the pick with a 2ft SSW groundswell, a 15-second period, and a light cross-offshore breeze. The combined energy is moderate (284). It’s small but fun, and the wind is going to keep it smooth. Afternoon gets a bit windier, so morning is your window.
Tuesday, August 11th is more of the same. Clean, 3ft SSW swell, 14-second period, and light breezes. The energy is still moderate (324). It’s consistent, and the cross-offshore wind keeps it clean. A solid beginner-to-intermediate morning.
Wednesday, August 12th – now we’re talking. This is the first real standout. Morning bumps up to 3ft S swell with a very long 18-second period, and the energy is getting strong (879). And the wind? Light, cross-offshore. It’s going to be clean and lined up. The long period means the sets will be less frequent but more powerful. This is a good day for a bigger board, and the crowd might be there, but it’s worth it. Afternoon stays good with a moderate offshore breeze.
Thursday, August 13th is the pick of the first week. 4ft to 4ft S swell, 16 to 15-second period, and the wind is offshore all day. Strong energy (717 to 678). The waves will have some push, and the offshore wind will hold them up nicely. This is a great day for a step-up board. The consistency is good, and the conditions are excellent.
Friday, August 14th through Saturday, August 15th drops back a little – 3ft S swell, still with a decent period and offshore winds. Fun, but not as punchy as Thursday. The energy is moderate (around 300-450). Good for a longboard or a funboard.
Sunday, August 16th – forget it. The wind swings onshore with a risk of thunderstorms. The swell is confused. Not one for the water.
Monday, August 17th is a mess. That 7ft S swell is short-period (6 seconds) and onshore. The energy is high (616) but it’s all chop and closeouts. This is kite-surfing conditions, not paddle surfing.
Tuesday, August 18th through Saturday, August 22nd is a mixed bag. The swell drops to 2ft to 3ft. There are clean windows with cross-offshore winds, but the energy is low (113 to 340). The 21st and 22nd have some hope with a 3ft SW swell and a 16-second period, but it’s very small. A longboard is your friend.
Sunday, August 23rd – this is *the* date. Mark it. A big 4ft to 5ft SSW groundswell, with a very long 22 to 21-second period, and the wind is offshore. The combined energy is very strong (1221 to 1663). This is a long-period groundswell, so it’s going to be powerful and clean, with long lulls between sets. The swell direction matches the optimum for the break. The crowd will be there, but it’s going to be excellent. The afternoon is for experienced surfers only.
Monday, August 24th – the swell is up to 6ft, but the energy is very strong (over 2000). The wind is cross-offshore, so it will be clean, but this is getting big. It’s a step-up day for the crew who know what they’re doing. The tide might be a factor.
Tuesday, August 25th – still a solid 5ft SSW swell, 16-second period, with a gentle cross-offshore breeze. The energy is strong (1397). This is another excellent day for experienced surfers, but it’s a bit more manageable than the day before.
So, the true standout is Sunday, August 23rd. Long-period groundswell, offshore wind, strong energy. That’s the one to chase. The next best is Thursday, August 13th, for a cleaner, more accessible wave.
- Rusty
Short Range ForecastMostly dry. Warm (max 28°C on Mon morning, min 24°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 28°C on Thu morning, min 25°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | ||||||||||||||
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 | SSW 15 | SSW 16 | SSW 15 | 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 |
Wave Graph | |||||||||||||||||||
131 | 179 | 320 | 246 | 280 | 269 | 273 | 627 | 606 | 879 | 597 | 653 | 636 | 423 | 411 | 293 | 284 | 280 | 250 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross-off | off | cross-off | cross-off | off | cross-off | off | off | off | off | off | off | off | cross-off | off | cross-off | cross-off |
High Tide | 1:11AM0.27m | 3:13PM0.66m | 2:12AM0.31m | 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 | |||||||
Low Tide | 9:35PM0.16m | 7:25AM-0.05m | 9:50PM0.14m | 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 | ||||||
— | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | |
6:59 | — | 6:58 | — | — | 6:58 | — | — | 6:57 | — | — | 6:55 | — | — | 6:55 | — | — | 6:54 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 |
Temp °C | 27 | 28 | 28 | 27 | 28 | 28 | 26 | 27 | 27 | 26 | 28 | 28 | 26 | 28 | 28 | 26 | 27 | 28 | 26 |
Feels °C | 29 | 30 | 28 | 28 | 29 | 28 | 26 | 28 | 26 | 26 | 30 | 29 | 26 | 27 | 28 | 26 | 29 | 30 | 26 |
Swell 1 Height (m) Direction Period (s) | S 16 | SSW 15 | SSW 16 | SSW 15 | 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 13 | E 13 | E 13 |
131 | 179 | 320 | 246 | 280 | 269 | 243 | 627 | 606 | 879 | 597 | 653 | 636 | 423 | 411 | 293 | 1584 | 2288 | 3125 | |
Swell 2 Height (m) Direction Period (s) | SSW 12 | SSW 12 | W 10 | SSW 11 | W 10 | SSW 21 | S 19 | SSW 13 | SSW 13 | W 12 | SSW 12 | W 12 | W 12 | W 12 | W 12 | W 11 | S 13 | S 13 | S 14 |
83 | 85 | 19 | 23 | 8 | 85 | 273 | 222 | 218 | 25 | 109 | 11 | 11 | 10 | 11 | 10 | 284 | 280 | 250 | |
Swell 3 Height (m) Direction Period (s) | SW 16 | W 11 | S 9 | W 10 | S 21 | W 10 | W 13 | W 13 | W 13 | — | W 12 | SW 19 | SW 18 | SW 18 | SSW 17 | SSW 17 | W 11 | W 11 | S 18 |
64 | 20 | 7 | 8 | 36 | 18 | 30 | 30 | 28 | — | 11 | 14 | 13 | 13 | 30 | 30 | 21 | 22 | 99 | |
Wind waves Height (m) Direction Period (s) | E 6 | E 8 | E 8 | E 8 | E 8 | E 8 | E 5 | E 8 | E 5 | E 6 | E 7 | E 6 | E 8 | E 6 | E 9 | E 12 | E 6 | E 13 | ENE 13 |
214 | 246 | 182 | 216 | 159 | 135 | 112 | 116 | 73 | 143 | 178 | 190 | 298 | 256 | 528 | 1459 | 88 | 3449 | 3939 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 4 | 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.











