In Betweens Surf Break

Lat Long: 21.28° N 157.84° W

In Betweens Surf Forecast and Surf Report

Issued: 1 pm 11 Aug 2026 (local time)

Forecast update in  hr  min

Today's In Betweens sea temperature is
27.2° C
0.6° 

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 12 Aug 2026:

  • Best quality surf: Monday 17 Aug, 8AM (local time) - 8ft (2.4m), 9s period, ENE swell with cross-offshore winds.
  • Most powerful swell: Sunday 16 Aug, 2AM (local time) - 11ft (3.5m), 10s period, ENE swell with 2,493 kJ wave energy.
  • Next surfable swell (1★+): Monday 17 Aug, 8AM (local time) - 8ft (2.4m), 9s period with ENE 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 Monday (Aug 17) at 8AM. The primary swell is predicted to be 2.4m and 9s period with a secondary swell of 0.8m and 14s. Another secondary swell of 1.2m and 6s is also forecast. 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 3.5m 10s and forecast to arrive on Sunday (Aug 16) 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 1.5m 6s period and expected on Wednesday (Aug 12) at 8PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Mon 17th Aug)8ft (2.4m) 9s
Best Surf 8AM (Mon 17th Aug)8ft (2.4m) 9s
Most Powerful 2AM (Sun 16th Aug)11ft (3.5m) 10s

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


The Lowdown

Alright, Rusty here. Let’s have a look at the only game in town for this stretch.

Right off the bat, we’ve got In Betweens as the sole spot on the radar. It’s a reef break that’s fairly consistent and exposed, best with a SSE swell direction. Water temp is sitting at 81°, which is about normal for this time of year, so no surprises there.

The outlook kicks off Tuesday 11th August with a clean little 3 ft south-southwest swell, but the wind is a fresh cross-off from the ENE at 22 mph. The wave energy is moderate (524), but the surf is marginal and the tide’s not playing ball. Honestly, not much to get excited about here.

Wednesday 12th and Thursday 13th see a bit more size, with a 3 ft south swell, a long period of 16-18 seconds. That’s proper groundswell, which is good for a reef like this. The energy is moderate to strong (866-895), and the wind stays cross-off fresh. Still, the forecast is calling it marginal, so it’s a pass for me.

Friday 14th drops back to 3 ft, then Saturday 15th sees a big jump. Saturday morning hits 8 ft from the ENE, but the wind is a strong 28 mph cross-off. That’s a lot of juice – energy is strong (1637) – but the afternoon gets a risk of thunderstorms and the swell pumps to 10 ft, with the same strong wind. That’s expert territory and the conditions are poor. Sunday 16th is still big at 10 ft, but the wind swings cross-on and lumpy, so it’s messy.

Now, here’s the standout. Monday 17th August – morning session. The swell drops to a clean 7 ft from the ENE, period 9 seconds, and the wind is a gentle east cross-off at 9 mph. The energy is strong (1102), but the conditions are clean and excellent for experienced surfers. This is the best of the whole forecast. After that, the size fades quickly, and the wind stays fresh cross-off, so it’s not the same quality.

From Tuesday 18th through to Friday 21st, we’re looking at small, short-period swell (5 ft dropping to 2 ft), with fresh cross-off winds. The energy is weak to moderate (420 down to 290). Poor conditions and not worth a paddle.

Then comes a second wind. Saturday 22nd August morning shows a 2 ft south-west swell with a very long 16-second period, and the energy is moderate (631). Sunday 23rd is similar, 3 ft south-southwest, period 16 seconds, energy 673. The wind is moderate cross-off, keeping it clean. These are marginal but a whole lot better than the flat spell before. It’s not a standout, but it’s a glimmer.

The final few days, 24th to 26th August, are mostly small, clean but marginal, with fresh to strong cross-off winds. The energy is moderate (820-985), but the conditions are poor or marginal, so nothing to rush for.

The bottom line: The one true highlight is Monday 17th August morning at In Betweens, with a clean 7 ft ENE swell, light cross-off wind, and strong energy. For experienced surfers, that’s the pick. Everything else is either too small, too windy, or too messy. Crowds are possible here sometimes, so it might be worth an early paddle.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 27°C on Tue afternoon, min 25°C on Tue night). Mainly fresh winds.

Days 5-7 Weather Summary

Heavy rain (total 37mm), heaviest during Sat night. Warm (max 27°C on Sun afternoon, min 25°C on Fri night). Winds decreasing (gales from the ENE on Sat night, light winds from the ESE by Sun night).

Tue
11
Wednesday
12
Thursday
13
Friday
14
Saturday
15
Sunday
16
Monday
17
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
1
1
1
1
1
1
1
0
0
1
0
0
0
0
2
4
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)
0.8
SSW
14
0.6
S
20
0.9
S
18
0.9
S
18
1
S
16
1
S
16
1.2
S
15
1.1
S
15
1
S
14
1.9
ENE
8
2.1
ENE
8
2.5
ENE
11
3
ENE
11
3.5
ENE
10
3
E
10
3
ENE
10
3.5
ENE
10
2.1
ENE
9
1.9
ENE
8
2
ENE
8
Wave Graph
Metric surfscale
Energy kJ
269
276
509
498
520
501
662
537
411
411
533
1403
1906
2493
1763
1513
2216
651
486
462
Wind (km/h)
35
ENE
30
ENE
30
ENE
35
ENE
30
ENE
30
ENE
35
ENE
35
ENE
35
ENE
35
NE
40
NE
45
NE
45
NE
55
NE
35
ESE
25
SE
15
ESE
15
E
30
ENE
30
ENE
Wind State
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-on
cross-on
cross-on
cross-off
cross-off
cross-off
High Tide
3:35PM0.79m
3:43AM0.31m
4:13PM0.75m
4:30AM0.36m
4:48PM0.69m
5:17AM0.40m
5:22PM0.62m
6:06AM0.44m
5:54PM0.53m
6:57AM0.47m
6:24PM0.45m
7:54AM0.49m
6:52PM0.37m
Low Tide
10:40PM0.05m
9:08AM-0.00m
11:08PM0.04m
9:58AM0.03m
11:36PM0.04m
10:49AM0.08m
00:03AM0.04m
11:43AM0.14m
00:30AM0.05m
12:43PM0.20m
00:58AM0.06m
1:59PM0.25m
1:27AM0.08m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:07
6:09
6:09
6:09
6:09
6:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:04
7:02
7:02
7:01
7:00
7:00
7:00
 mm
1
14
12
4
4
2
1
Temp °C
27
25
26
26
26
27
27
25
26
26
26
26
26
26
26
27
27
27
26
25
Feels °C
25
23
23
23
24
24
24
23
23
23
23
23
23
23
24
26
28
29
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)
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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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