In Betweens Surf Break

Lat Long: 21.28° N 157.84° W

In Betweens Surf Forecast and Surf Report

Issued: 1 am 21 Aug 2026 (local time)

Forecast update in  hr  min

Today's In Betweens sea temperature is
26.9° C
0.1° 

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


In Betweens surf forecast from 21 Aug 2026:

  • Best quality surf: Friday 21 Aug, 5PM (local time) - 2.5ft (0.7m), 16s period, SW swell with cross-offshore winds.
  • Most powerful swell: Thursday 27 Aug, 11AM (local time) - 3.5ft (1.1m), 17s period, S swell with 716 kJ wave energy.
  • Next surfable swell (1★+): Friday 21 Aug, 5PM (local time) - 2.5ft (0.7m), 16s period with SW swell.

Best Forecast Surf Conditions for In Betweens this week:

The surf forecast for In Betweens over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Aug 21) at 5PM. The primary swell is predicted to be 0.7m and 16s period with a secondary swell of 0.9m and 7s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at In Betweens in the next 16 days are 1.1m 17s and forecast to arrive on Thursday (Aug 27) at 11AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 6s period and expected on Monday (Aug 24) at 8AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 5PM (Fri 21st Aug)2.5ft (0.7m) 16s
Best Surf 5PM (Fri 21st Aug)2.5ft (0.7m) 16s
Most Powerful11AM (Thu 27th Aug)3.5ft (1.1m) 17s

Table - best surf conditions forecast for In Betweens over the next 16 days.


The Lowdown

Right, grab a look at this, yeah? We’ve got one spot on the radar for the next couple of weeks, so let’s break it down proper.

First up, it’s looking a bit slim for a good while. The start of this window is pretty poor, with a few days of messy, blown-out conditions. Nothing really worth paddling out for in the first few days. We’re looking at a bit of a dead spell until things start to shift.

Come Friday the 23rd, there is some swell, but it’s short-period windswell and the wind is howling. That’s no good for a clean line-up. The whole weekend is much the same – a lot of energy, but with the cross-off winds that strong, it’ll be a battle. Not what we want.

The middle of next week, from the 26th, sees the swell settle down a bit, but it drops right off in size. We’re talking ankle to knee-high dribble. The winds are still a factor, making it hard to find anything with any shape.

Then we get a proper long-range marker on the 31st. This is the one that gets the heart rate up. We’re seeing a big jump in the swell and the energy is getting right up there. This is a big, powerful groundswell pushing through. However, it’s a big one, over 8ft, so this is strictly for the experienced crew. The wind is clean, but the power is going to be something else. This is a promise of things to come, but with that much water moving, you’ve got to treat it with respect.

After that, the wind goes a bit wild again, and the swell eases off into early September. There’s an interesting window on the 5th with a bit more period to it and lighter winds, which could be the pick of the later period, but it’s still a long way off, so we’ll see how it shapes up.

So, to sum it up: the next week is mostly a write-off. The standout is that big swell at the end of the month – look for the 31st – but that’s for the experienced. There are no other obvious heroes in this window, with most days being blown-out or too small to get excited about.

Rusty out.

Short Range Forecast

Mostly dry. Warm (max 27°C on Fri morning, min 25°C on Sat night). Winds increasing (light winds from the ESE on Fri afternoon, strong winds from the ENE by Sat night).

Days 4-6 Weather Summary

Mostly dry. Warm (max 26°C on Mon morning, min 25°C on Mon morning). Mainly fresh winds.

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)
1
2
1
0
0
0
0
0
0
0
0
0
1
0
1
1
1
1
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)
0.7
SW
17
0.7
SW
16
0.8
SSW
16
0.7
SW
16
1.6
ENE
7
1.8
E
7
1.8
ENE
7
1.6
ENE
7
1.6
ENE
6
0.7
SSW
14
0.7
SSW
13
1.5
ENE
7
1.5
E
7
1.5
E
7
1.6
ENE
7
0.7
SSW
14
0.7
S
18
0.7
S
19
1.1
S
17
0.9
S
16
1
S
16
Wave Graph
Metric surfscale
Energy kJ
291
261
322
261
255
348
327
239
218
166
172
187
251
238
227
215
304
351
716
422
482
Wind (km/h)
10
ESE
10
NE
20
ENE
35
ENE
40
ENE
40
ENE
45
ENE
40
ENE
30
ENE
35
ENE
35
ENE
30
ENE
35
ENE
35
ENE
35
ENE
35
ENE
30
ENE
30
ENE
35
ENE
30
ENE
30
ENE
Wind State
cross-on
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
12:25PM0.59m
00:08AM0.21m
1:12PM0.63m
1:06AM0.23m
1:52PM0.66m
1:46AM0.26m
2:26PM0.67m
2:21AM0.29m
2:56PM0.68m
2:55AM0.33m
3:24PM0.68m
3:31AM0.37m
3:53PM0.66m
4:08AM0.41m
Low Tide
8:41PM0.17m
5:06AM0.12m
9:00PM0.16m
6:08AM0.10m
9:18PM0.14m
6:59AM0.08m
9:35PM0.13m
7:43AM0.06m
9:53PM0.11m
8:24AM0.05m
10:12PM0.10m
9:05AM0.06m
10:32PM0.08m
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
part cloud
part cloud
clear
clear
clear
clear
part cloud
part cloud
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:11
6:11
6:11
6:11
6:11
6:13
6:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:57
6:55
6:54
6:53
6:52
6:52
6:52
 mm
Temp °C
27
27
27
26
26
25
26
26
25
26
26
26
26
26
25
25
26
25
25
26
25
Feels °C
31
31
29
26
24
23
22
22
22
24
24
25
25
24
23
22
23
23
23
23
24
  • Map Icons:
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  • 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 In Betweens Surf forecast

The above surf forecast table for In Betweens provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at In Betweens can be found by selecting the local surf guide option on the grey menu. Our In Betweens 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 (In Betweens) 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 In Betweens 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.

In Betweens is 4 km (2 miles) from Honolulu. If you plan a vacation in Oahu, look for hotels and other accommodation in Honolulu. Honolulu has rooms for a wide range of budgets as well as car hire and transport links.

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