Big Beach Surf Break

Lat Long: 20.63° N 156.45° W

Big Beach Surf Forecast and Surf Report

Issued: 7 pm 12 Aug 2026 (local time)

Forecast update in  hr  min

Today's Big Beach sea temperature is
26.9° C
0.4° 

Big Beach surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Big Beach surf forecast from 13 Aug 2026:

  • Best quality surf: Wednesday 12 Aug, 11PM (local time) - 3.5ft (1.1m), 16s 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, 11PM (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 Wednesday (Aug 12) at 11PM. The primary swell is predicted to be 1.1m and 16s 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 offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.5m 9s period and expected on Saturday (Aug 15) at 11AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)11PM (Wed 12th Aug)3.5ft (1.1m) 16s
Best Surf11PM (Wed 12th Aug)3.5ft (1.1m) 16s
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, folks, Rusty back at it.

We got a slow start here. Nothing worthwhile until Thursday the 13th. Wednesday the 12th is a total dud with a 3ft S swell, a stiff 25 km/h cross-off wind and combined swell energy of 852. It’s clean but that’s it. Skip it.

Thursday the 13th is the first real green light. Big Beach (United States) shows 4ft of clean S swell on Thursday morning, a solid 16-second period, and offshore wind from the ENE at 15 km/h. Combined energy sits at 719 – a nice moderate push. The afternoon holds a similar 4ft S swell with offshore wind at 20 km/h. This is your window. Crowds are possible sometimes here, but with that quality, you take it.

Friday the 14th stays rideable but fades. Morning has 3ft S swell, still 16 seconds, cross-off wind, energy down to 445. Afternoon is similar at 3ft but with a nicer offshore NE wind at 15 km/h and 452 energy. Clean, just not as punchy.

Saturday the 15th is a hard pass. Only 3ft S swell with a nasty 35 km/h offshore wind that makes it messy. Keep the board dry.

Sunday the 16th brings a bigger, uglier swell. Morning has 7ft of S swell but a short 10-second period and combined energy of 1119 – that’s strong. Wind is cross-off at 25 km/h, risk of storms. This is expert only; too big for beginners and that period is junk. Afternoon settles to 5ft S, an even worse 8-second period, 524 energy, cleaner wind but still rough.

From Monday the 17th through Wednesday the 19th, it’s tiny stuff – 2ft to 3ft, energy dropping from 300 to just 69 by Wednesday morning. Long period (12-14 seconds) keeps it clean but small and weak. Just get wet, don’t expect fireworks.

Thursday the 20th sees a shift. Swell comes from the SSW at 2ft but with an 18-second period – a real long-period groundswell. Energy 232. Light cross-off east wind at 10 km/h. Friday 21st continues similar, 2ft SSW, 16 seconds, 251 energy, light morning wind. It’s clean but tiny, and that long period is better suited to a reef or point than a beach break like Big Beach.

The absolute standout of the entire 16 days is Monday the 25th of August. Tuesday morning sees a clean 3ft SSW swell, 14-second period, combined energy of 707, and light cross-off east wind at 10 km/h. That’s prime. The afternoon pushes energy to 724 but a risk of thunder. The morning is the session to circle on your calendar.

The final few days, the 26th and 27th, show 3ft to 3ft SSW and S swells with periods into the 13 to 18-second range and combined energy in the 470-530 zone. Light cross-off winds keep it clean and reliable, but nothing tops that Monday the 25th.

Water temp is 80°F with just a 0.7°F anomaly – normal for the season, nothing wild.

Rusty out.

Short Range Forecast

Mostly dry. Warm (max 29°C on Thu afternoon, min 25°C on Wed night). Winds increasing (light winds from the NNE on Thu morning, fresh winds from the ENE by Sat afternoon).

Days 5-7 Weather Summary

Moderate rain (total 12mm), heaviest on Sun afternoon. Warm (max 28°C on Sun morning, min 25°C on Mon night). Winds decreasing (fresh winds from the ENE on Sat night, light winds from the E by Tue morning).

Thursday
13
Friday
14
Saturday
15
Sunday
16
Monday
17
Tuesday
18
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
3
3
3
2
2
2
1
1
0
1
0
1
1
1
1
1
1
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.3
S
16
1.1
S
16
1.2
S
15
1.2
S
15
1
S
14
1
S
14
0.9
S
14
0.9
S
13
0.8
S
13
0.7
S
14
1.1
S
16
0.7
S
13
0.9
S
15
0.8
S
14
0.8
S
14
0.7
S
13
0.7
S
13
0.6
S
13
0.6
S
13
Wave Graph
Metric surfscale
Energy kJ
879
597
653
636
423
411
293
284
225
195
615
168
347
264
257
170
162
119
117
Wind (km/h)
15
NNE
20
ENE
20
ENE
15
NNE
20
ENE
20
NE
25
NE
30
ENE
35
ENE
25
NE
35
ENE
25
E
20
ENE
20
ENE
20
E
20
ENE
15
E
20
E
15
NE
Wind State
off
off
off
off
off
off
off
off
cross-off
off
cross-off
cross-off
cross-off
cross-off
cross-off
off
cross-off
cross-off
off
High Tide
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
8:09AM0.40m
5:51PM0.38m
Low Tide
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
1:00PM0.23m
1:08AM0.06m
clear
clear
clear
clear
clear
clear
part cloud
clear
part cloud
part cloud
part cloud
thunderstorm
thunderstorm
rain showers
thunderstorm
part cloud
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:03
6:03
6:03
6:05
6:05
6:05
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:57
6:55
6:55
6:54
6:53
6:52
6:52
 mm
3
5
3
1
Temp °C
26
28
29
26
28
28
27
28
28
27
28
28
27
27
27
26
27
27
26
Feels °C
26
28
29
26
28
28
28
27
26
24
27
29
27
29
28
27
28
27
27
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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