Big Beach Surf Break

Lat Long: 20.63° N 156.45° W

Big Beach Surf Forecast and Surf Report

Issued: 1 am 20 Aug 2026 (local time)

Forecast update in  hr  min

Today's Big Beach sea temperature is
27.0° 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 20 Aug 2026:

  • Best quality surf: Thursday 27 Aug, 8AM (local time) - 3ft (0.9m), 16s period, SSW swell with offshore winds.
  • Most powerful swell: Thursday 27 Aug, 8AM (local time) - 3ft (0.9m), 16s period, SSW swell with 427 kJ wave energy.
  • Next surfable swell (1★+): Thursday 20 Aug, 5AM (local time) - 1.5ft (0.5m), 17s period with SW 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 20) at 5AM. The primary swell is predicted to be 0.5m and 17s period. 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 0.9m 16s and forecast to arrive on Thursday (Aug 27) at 8AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.1m 6s period and expected on Sunday (Aug 23) at 8PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Thu 20th Aug)1.5ft (0.5m) 17s
Best Surf 8AM (Thu 27th Aug)3ft (0.9m) 16s
Most Powerful 8AM (Thu 27th Aug)3ft (0.9m) 16s

Table - best surf conditions forecast for Big Beach over the next 16 days.


The Lowdown

Alright folks, Rusty here. Let’s look at what’s cooking for Big Beach over the next couple of weeks.

Right now, we’ve got a pretty long flat spell ahead. There’s no real surf to get excited about for the next few days. We’re looking at tiny, weak swell that barely registers. The wait is on.

Things finally start to stir around Thursday the 26th of August. The early morning at Big Beach is the first real chance of a session. We’re looking at a small 2-foot swell rolling in from the SSW, but the real story is the energy. The combined swell energy is climbing into moderate territory at (454). The wind is light and variable, keeping the surface clean. It’s small, but it’s the first glimmer of life.

Then, the standout window hits on Thursday the 27th of August. The morning session is the pick of the entire forecast. We get a clean 3-foot groundswell from the SSW wrapping in with a strong energy reading of (733). The winds are gentle offshore from the ENE, which is a major positive for clean, lined-up waves. This is the best the forecast has to offer—small but quality, perfect for a longboard or a funboard. Don't sleep on it.

After that, the energy drops off again through the end of August and into early September, leaving us with again just small, knee-high dribblers.

Looking way out, there’s another interesting pulse for Thursday the 3rd and Friday the 4th of September. The morning of the 4th looks promising with a 3-foot SSW groundswell and a very long 18-second period, pumping the energy up to (717). It’s a long way off, so keep an eye on it, but that combination of size and long period could serve up some nice, clean lines at Big Beach if the winds play ball. It’s a potential highlight, but we’ll have to wait and see.

So, if you’re hanging out for a paddle, Thursday the 27th of August morning is your best bet. It’s small, but it’s the cleanest and most energetic of the lot. The rest is a waiting game with a few flickers of hope in the long range.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 29°C on Sat afternoon, min 26°C on Thu morning). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 5mm), mostly falling on Mon afternoon. Warm (max 28°C on Sun morning, min 25°C on Sun night). Wind will be generally light.

Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
1
2
2
1
2
1
0
1
0
1
1
0
1
0
1
1
2
2
1
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.6
SSW
18
0.6
SSW
17
0.7
SW
16
0.6
SW
16
0.5
SW
16
0.7
SW
16
0.6
SSW
15
0.5
SW
15
0.6
SSW
15
0.6
SSW
15
0.5
SSW
16
0.5
SW
14
0.7
SSW
14
0.6
SSW
13
0.6
SSW
13
0.5
SSW
16
0.5
SSW
16
0.5
S
18
0.6
S
18
0.7
SSW
17
0.7
S
18
Wave Graph
Metric surfscale
Energy kJ
207
202
278
219
119
261
152
116
152
144
137
100
163
139
127
146
140
165
232
307
301
Wind (km/h)
5
WNW
5
E
10
NE
5
E
10
E
15
ENE
10
E
25
ENE
25
ENE
25
ENE
25
ENE
20
NE
20
ENE
15
ENE
15
ENE
15
E
20
E
20
ENE
15
ENE
15
ENE
15
NE
Wind State
glassy
cross-off
off
cross-off
cross-off
cross-off
cross-off
cross-off
off
cross-off
off
off
cross-off
cross-off
cross-off
cross-off
cross-off
off
cross-off
cross-off
off
High Tide
12:36PM0.42m
1:29PM0.46m
2:01PM0.50m
11:48PM0.23m
2:28PM0.53m
1:03AM0.27m
2:51PM0.56m
1:46AM0.30m
3:14PM0.58m
2:23AM0.34m
3:36PM0.59m
2:59AM0.38m
Low Tide
3:14AM0.08m
5:09AM0.07m
9:42PM0.17m
6:20AM0.05m
9:13PM0.16m
7:07AM0.02m
9:16PM0.15m
7:45AM0.01m
9:28PM0.13m
8:19AM-0.01m
9:45PM0.11m
clear
part cloud
clear
clear
part cloud
clear
clear
part cloud
clear
clear
part cloud
part cloud
part cloud
thunderstorm
thunderstorm
part cloud
thunderstorm
part cloud
part cloud
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:05
6:05
6:07
6:07
6:07
6:07
6:07
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:51
6:50
6:50
6:49
6:47
6:46
6:45
 mm
2
1
2
Temp °C
27
28
27
28
28
28
28
29
27
28
28
26
27
27
27
27
27
26
27
27
26
Feels °C
31
32
30
32
32
30
30
29
27
28
28
25
28
29
29
29
28
27
29
29
28
  • 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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