In Betweens Surf Break

Lat Long: 21.28° N 157.84° W

In Betweens Surf Forecast and Surf Report

Issued: 1 pm 14 Sep 2026 (local time)

Forecast update in  hr  min

Today's In Betweens sea temperature is
27.3°C
0.3° 

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 15 Sep 2026:

  • Best quality surf: Tuesday 15 Sep, 2AM (local time) - 1.5ft (0.5m), 21s period, SW swell with cross-offshore winds.
  • Most powerful swell: Thursday 17 Sep, 5PM (local time) - 7ft (2.1m), 9s period, ENE swell with 660 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 15 Sep, 2AM (local time) - 1.5ft (0.5m), 21s 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 Tuesday (Sep 15) at 2AM. The primary swell is predicted to be 0.5m and 21s period. 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 2.1m 9s and forecast to arrive on Thursday (Sep 17) at 5PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.8m 6s period and expected on Wednesday (Sep 16) at 11PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Tue 15th Sep)1.5ft (0.5m) 21s
Best Surf 2AM (Tue 15th Sep)1.5ft (0.5m) 21s
Most Powerful 5PM (Thu 17th Sep)7ft (2.1m) 9s

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


The Lowdown

Alright, I’ve taken a good look through the charts for In Betweens. Gotta be straight with you, this outlook is a tough one. The overall pattern shows a whole lot of wind and not a lot of quality wave face. You’re looking at a solid block of nothing special for the first week and a half. It’s not until late in the period that a real chance pops up, but even then it comes with a catch.

So, In Betweens, a beginner-friendly reef break, is what we’ve got to work with. For the next week, starting Monday the 14th through most of the following week, the wind is howling from the ENE – cross-off, yes, but fresh to strong breezes of 18 to 28 mph. The swell is small, under 3 ft, for the first few days, trade-wind swell basically. The combined wave energy starts weak (288) and builds into moderate territory (over 1000) but the wind is just too strong to produce anything worth a paddle. The water temp is sitting at 81°F, and that’s bang on average for this time of year – no surprises there.

Things get a bit hectic from the 17th. The swell direction swings around to the ENE and jumps up to over 7 ft, but the period drops to a short, gutless 7 to 8 seconds. Couple that with 22 to 28 mph winds? That’s not surf for a beginner’s reef. It’s more like a washing machine. Wave energy spikes into the strong 1100+ range but it’s all messy. This setup looks more interesting for kite surfing than paddle surfing, to be honest. This poor quality hangs around right through until the 25th.

Now, here’s the one window that gets my heart beating a little faster. Late on Monday the 28th into that afternoon, the wind drops right out. We’re talking a light air – 3 mph from the NNE. That’s about as clean as it gets. The swell is a solid 7 ft from the ENE, but the period is a short 7 seconds. That’s the catch. The real standout is Tuesday the 29th afternoon, with 7 ft from the ENE. The wind is a light 6 mph cross-on, but it’s still a step up. For this break, that’s the best on offer. You’ll have to take the shore break crowds, because it gets "sometimes" busy here, but when the wind is that calm, it’ll be worth it for a few clean ones. The swell is over 5 ft though, so this is out of the zone for beginners.

After that, the forecast fades out with small, short-period swell and a return of the wind. You wait a long time for the right moment, but late on the 28th and into the 29th is your shot. Keep an eye on it.

Rusty

Short Range Forecast

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

Days 5-7 Weather Summary

Light rain (total 6mm), mostly falling on Thu night. Warm (max 27°C on Thu afternoon, min 25°C on Thu night). Mainly fresh winds.

Mon
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
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
1
1
1
2
1
1
2
2
2
2
2
1
1
1
1
1
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.5
SW
22
0.5
SW
21
0.7
SW
20
0.7
SW
19
0.8
SSW
19
0.9
SW
18
0.9
SSW
18
0.9
SW
17
2.2
ENE
7
2.1
ENE
9
1
SSW
18
1
SSW
17
1
SSW
17
1
SSW
16
0.9
SSW
16
0.9
SSW
16
2
E
7
2
E
7
1.8
ENE
8
1.9
ENE
7
Wave Graph
Metric surfscale
Energy kJ
227
224
392
384
470
455
541
429
508
660
644
622
580
539
428
404
411
400
375
365
Wind (km/h)
15
NE
15
ENE
20
ENE
25
NE
25
ENE
30
ENE
30
NE
25
NE
25
ENE
30
ENE
30
ENE
30
ENE
35
ENE
30
ENE
30
ENE
30
ENE
30
ENE
35
ENE
30
ENE
35
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-off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
5:40PM0.36m
7:02AM0.58m
6:07PM0.30m
7:59AM0.57m
6:32PM0.25m
9:10AM0.56m
7:25PM0.21m
10:27AM0.57m
11:01PM0.21m
11:34AM0.59m
00:19AM0.23m
12:26PM0.61m
00:59AM0.27m
Low Tide
11:42PM0.08m
2:03PM0.23m
00:07AM0.11m
4:06PM0.24m
00:38AM0.13m
7:14PM0.21m
1:26AM0.16m
7:23PM0.18m
2:56AM0.18m
7:43PM0.16m
4:35AM0.17m
8:01PM0.15m
clear
part cloud
clear
clear
clear
clear
clear
part cloud
part cloud
thunderstorm
thunderstorm
clear
clear
clear
clear
part cloud
part cloud
clear
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:18
6:18
6:18
6:18
6:18
6:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:35
6:34
6:32
6:31
6:30
6:30
6:29
 mm
1
5
Temp °C
27
26
27
27
26
27
27
26
26
27
26
27
27
26
27
27
26
26
26
25
Feels °C
26
27
28
28
26
26
26
26
27
26
25
25
24
24
26
26
24
24
23
23
  • 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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