
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★+): Monday 10 Aug, 8PM (local time) - 2.5ft (0.7m), 16s 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 Monday (Aug 10) at 8PM. The primary swell is predicted to be 0.7m and 16s period with a secondary swell of 0.3m and 11s. 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 4.0m 14s period and expected on Saturday (Aug 15) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Mon 10th Aug) | 2.5ft (0.7m) 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. Big Beach (Big Beach) is looking like a bit of a rollercoaster over the next couple of weeks, but there are a few days that’ll have you grinning. The water’s sitting around 80°, which is right where it should be for this time of year.
We start off Monday the 10th with small, clean surf – 2ft SSW swell, but it’s just marginal. The 16-second period gives it some legs, but the combined energy is a weak 319. A cross-off east wind keeps it tidy, but it’s nothing special.
Tuesday the 11th is much the same – 3ft SSW swell, 14-second period. Mornings are cleaner with a light breeze, but still small. Energy is a bit better (324 morning, 372 afternoon), but we’re waiting.
Now, Wednesday the 12th through Friday the 14th is where it’s at. Wednesday morning brings a jump to 3ft S swell with an 18-second period – that’s long-period groundswell with some punch. Energy hits 879, moderate to strong. With a light NNE breeze, it’s glassy clean. The swell direction (S) isn’t the absolute best (optimum is WSW), but the quality more than makes up for it. Thursday the 13th keeps the energy high (719), with 4ft S swell and offshore NE winds – clean and solid. Friday the 14th is a little smaller (3ft, 14-second period) but still good with offshore winds.
Saturday the 15th is a washout. Fresh onshore winds and a 3ft S swell with a short 13-second period. Energy drops to 293. The afternoon brings rain and messy conditions.
Sunday the 16th is ugly: 10ft SSE swell but with a terrible 6-second period – that’s pure wind swell, all bump and no shape. Strong cross-on winds and lumpy. Energy is 770, but it’s a nightmare. More of a kite day.
Monday the 17th is a relief: glassy with a light SE wind, and a clean 3ft S swell with a 14-second period. Energy is 316. Surfable, but small.
From Tuesday the 18th through Saturday the 22nd, the swell drops to 1ft to 2ft. Periods are decent (13–18 seconds), but there’s hardly any size. Combined energy sits between 156 and 234. It’s marginal, ordinary surf. Offshore winds keep it clean, but it’s really just for a longboard.
Sunday the 23rd is flat and poor. Monday the 24th shows a little spike – 2ft S swell with a very long 19-second period. Energy jumps to 383 in the morning, but the cross-off wind might make it fat. The afternoon gets bigger (3ft, 19 seconds, energy 614), but it’s still questionable.
Finally, Tuesday the 25th: the biggest energy of the whole run at 1033, with 4ft S swell and a 16-second period. That’s moderate wave energy, and with a cross-off wind, it could offer some solid lines, but it’s a long way out.
Best on offer: The clear standout is Wednesday the 12th through Friday the 14th. That 3ft to 4ft S groundswell with offshore or light winds is the cleanest, most powerful window. If you can only pick one, make it Wednesday morning the 12th – glassy, 18-second period, and a nice push.
Rusty.
Short Range ForecastMostly dry. Warm (max 28°C on Thu morning, min 25°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 51mm), heaviest during Sat night. Warm (max 28°C on Thu afternoon, min 25°C on Thu night). Winds increasing (light winds from the NNE on Thu night, strong winds from the WSW by Sat night). | |||||||||||||||||||
Mon 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | ||||||||||||||
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 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 | SSE 6 | S 6 | S 15 |
Wave Graph | ||||||||||||||||||||
250 | 246 | 280 | 269 | 273 | 627 | 606 | 879 | 597 | 653 | 537 | 423 | 411 | 293 | 284 | 280 | 253 | 727 | 470 | 347 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross-off | cross-off | off | cross-off | off | cross-off | off | off | off | off | off | off | off | cross-off | on | cross-on | cross-on | cross-on |
High Tide | 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 | 6:07AM0.42m | 5:49PM0.48m | |||||||
Low Tide | 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 | 11:35AM0.12m | 00:14AM0.06m | |||||||
— | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — | |
6:58 | — | — | 6:58 | — | — | 6:57 | — | — | 6:55 | — | — | 6:55 | — | — | 6:54 | — | — | 6:53 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | 1 | 41 | 8 | 3 | 1 |
Temp °C | 27 | 27 | 27 | 27 | 26 | 27 | 27 | 26 | 28 | 28 | 26 | 28 | 28 | 26 | 28 | 27 | 25 | 26 | 27 | 26 |
Feels °C | 27 | 28 | 28 | 27 | 26 | 28 | 27 | 26 | 30 | 27 | 26 | 28 | 29 | 26 | 27 | 26 | 24 | 24 | 27 | 29 |
Swell 1 Height (m) Direction Period (s) | 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 | E 13 | E 13 | E 14 | E 13 | E 10 | E 10 | E 9 |
250 | 246 | 280 | 269 | 243 | 627 | 606 | 879 | 597 | 653 | 537 | 423 | 411 | 1583 | 2887 | 4985 | 5211 | 962 | 432 | 214 | |
Swell 2 Height (m) Direction Period (s) | SSW 11 | SSW 11 | W 10 | SSW 21 | S 19 | SSW 13 | SSW 13 | W 12 | SSW 12 | W 12 | W 12 | W 12 | W 12 | S 14 | S 13 | S 13 | S 14 | NW 6 | S 16 | S 15 |
50 | 23 | 8 | 85 | 273 | 222 | 218 | 25 | 111 | 11 | 11 | 10 | 11 | 293 | 284 | 280 | 253 | 14 | 127 | 347 | |
Swell 3 Height (m) Direction Period (s) | W 10 | W 10 | S 21 | W 10 | W 11 | W 13 | W 13 | — | W 12 | SW 19 | SW 18 | SW 18 | SSW 17 | W 11 | W 11 | W 11 | S 18 | WNW 12 | WNW 12 | W 6 |
19 | 8 | 36 | 18 | 9 | 30 | 28 | — | 11 | 14 | 13 | 12 | 30 | 10 | 9 | 22 | 99 | 29 | 28 | 40 | |
Wind waves Height (m) Direction Period (s) | E 8 | E 5 | E 8 | E 8 | E 5 | E 8 | E 5 | E 6 | E 6 | E 6 | E 6 | E 6 | E 9 | E 13 | ENE 13 | E 14 | NNW 6 | SSE 6 | S 6 | S 7 |
176 | 119 | 159 | 138 | 104 | 119 | 73 | 149 | 125 | 198 | 185 | 239 | 502 | 2571 | 2553 | 5656 | 74 | 727 | 470 | 331 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 361 | 172 | 88 | 32 | 30 | 30 |
Best forecast wave conditions in Maui | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
Latest Updates
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.











