Big Beach Surf Break

Lat Long: 20.63° N 156.45° W

Big Beach Surf Forecast and Surf Report

Issued: 1 am 21 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 21 Aug 2026:

  • Best quality surf: Wednesday 26 Aug, 8PM (local time) - 2.5ft (0.7m), 19s period, S swell with offshore winds.
  • Most powerful swell: Thursday 27 Aug, 11PM (local time) - 3.5ft (1.1m), 16s period, S swell with 582 kJ wave energy.
  • Next surfable swell (1★+): Friday 21 Aug, 5AM (local time) - 2.5ft (0.7m), 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 Friday (Aug 21) at 5AM. The primary swell is predicted to be 0.7m 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 1.1m 16s and forecast to arrive on Thursday (Aug 27) at 11PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.2m 6s period and expected on Saturday (Aug 22) at 8PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Fri 21st Aug)2.5ft (0.7m) 17s
Best Surf 8PM (Wed 26th Aug)2.5ft (0.7m) 19s
Most Powerful11PM (Thu 27th Aug)3.5ft (1.1m) 16s

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


The Lowdown

Alright folks, Rusty here. Let’s look at the next stretch for Big Beach.

The first few days are pretty quiet. We’ve got some small, clean surf on Friday the 21st, but it’s tiny – not really worth getting wet for. That run of small, ordinary surf hangs around through the weekend and into early next week. From Friday the 21st through Tuesday the 27th, the waves stay in that knee-to-thigh-high zone. There’s plenty of clean mornings with light offshore breezes, but we’re just not getting the energy.

Now, the standout in this whole window is Thursday morning, the 27th of August. That’s the call. The swell jumps up to a more respectable `3ft` from the SSW with a long period of 16 seconds. The energy reading (836) is the strongest we see in the whole outlook, and the wind is light and cross-offshore, so it should be clean and lined up. This is the one to circle on the calendar. The morning of Wednesday the 26th is also worth a paddle, with a solid `2ft` and clean offshore conditions, but Thursday is the pick.

After that, things settle back down into the ordinary again. We have a few more days of small, clean waves through the weekend and into the start of September. The morning of Tuesday the 1st of September gets interesting, with a `3ft` SSW groundswell and a long 18 second period. It’s got some push, but that morning wind is strong, and by the afternoon it’s blowing a near gale, so it won’t be much fun to paddle into. That one is more for the experienced heads to look at.

Water temps are about average for the time of year, so no surprises there.

So, to sum it up: don't rush out for the small stuff. Save your energy for Thursday the 27th. That’s your best chance at a proper session. The rest is just keeping the board dusty.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 28°C on Fri morning, min 26°C on Fri night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 3mm), mostly falling on Mon afternoon. Warm (max 28°C on Tue morning, min 24°C on Tue night). Wind will be generally light.

Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
1
2
1
1
0
0
1
1
1
0
1
1
0
2
2
2
2
3
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
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
0.7
SSW
13
0.6
SSW
13
0.5
SSW
16
0.5
SSW
16
0.5
S
18
0.7
SSW
14
0.7
SSW
17
0.7
S
18
0.8
S
18
0.8
S
16
1.1
S
16
Wave Graph
Metric surfscale
Energy kJ
219
119
261
152
116
152
144
137
100
163
156
127
146
140
165
215
307
322
441
325
582
Wind (km/h)
5
ENE
15
E
15
ENE
15
E
20
ENE
20
ENE
20
ENE
20
ENE
20
NE
15
ENE
15
ENE
15
ENE
20
E
25
E
20
NE
15
NE
20
ENE
20
ENE
15
ENE
20
ENE
15
NE
Wind State
off
cross-off
off
cross-off
off
cross-off
cross-off
off
off
cross-off
cross-off
off
cross-off
cross-off
off
off
off
off
off
cross-off
off
High Tide
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
3:58PM0.59m
3:35AM0.41m
Low Tide
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
8:51AM-0.01m
10:04PM0.09m
clear
part cloud
part cloud
clear
part cloud
clear
clear
part cloud
part cloud
part cloud
thunderstorm
thunderstorm
part cloud
clear
clear
clear
clear
clear
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:05
6:07
6:07
6:07
6:07
6:07
6:07
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:50
6:50
6:49
6:47
6:46
6:45
6:45
 mm
2
1
Temp °C
28
28
28
28
28
27
28
28
26
27
27
27
28
28
26
27
27
26
27
27
25
Feels °C
32
32
30
30
29
28
28
29
26
29
29
29
29
27
26
27
27
26
28
26
24
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
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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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