In Betweens Surf Break

Lat Long: 21.28° N 157.84° W

In Betweens Surf Forecast and Surf Report

Issued: 1 pm 07 Sep 2026 (local time)

Forecast update in  hr  min

Today's In Betweens sea temperature is
27.1°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 8 Sep 2026:

  • Best quality surf: Wednesday 9 Sep, 2AM (local time) - 4.5ft (1.3m), 10s period, ENE swell with glassy winds.
  • Most powerful swell: Monday 7 Sep, 11PM (local time) - 18ft (5.5m), 15s period, SSW swell with 11,991 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 9 Sep, 2AM (local time) - 4.5ft (1.3m), 10s 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 Wednesday (Sep 09) at 2AM. The primary swell is predicted to be 0.9m and 14s period with a secondary swell of 1.3m and 10s. Another secondary swell of 1.0m and 8s is also forecast. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at In Betweens in the next 16 days are 5.5m 15s and forecast to arrive on Monday (Sep 07) at 11PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 10s period and expected on Tuesday (Sep 08) at 11AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Wed 9th Sep)4.5ft (1.3m) 10s
Best Surf 2AM (Wed 9th Sep)4.5ft (1.3m) 10s
Most Powerful11PM (Mon 7th Sep)18ft (5.5m) 15s

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


The Lowdown

Alright folks, let's be real. The next day or two? Close the board bag. We've got a thumping SW swell hitting on Monday, but it's getting ruined by a strong cross-onshore ESE breeze. It's going to be a washing machine out there. Not worth the frustration. Tuesday cleans up a little in size, but the wind is still on it, making it lumpy and messy. You’ll be fighting it the whole time.

The first real taste of something decent comes Wednesday afternoon. The wind swings offshore, and the ocean finally starts to smooth out. It's not big, but it'll be clean. You'll have to work for the waves, but at least you won't be getting skunked by the wind. A little window of quality before the swell packs up.

After that, get ready for a flat spell. From Thursday through the weekend, the swell just dies. The offshore winds will keep the ocean glassy and pretty, but there's no power in it. A real longboard or funboard kinda stretch. You'll be doing more sitting and floating than riding. This lull sticks around for a few days, but there's a hint of a long-period SW groundswell peeking in for the middle of next week, around the 15th and 16th.

That period is our main chance. Wednesday afternoon the 16th looks like a gem: light offshore wind, a clean face, and a fun, rideable wave. Thursday the 17th has good conditions both morning and afternoon. The swell's not big, but the period is long, up to 18 seconds, so it'll have some push. That kind of energy holds up better on reefs and points than on a beach break, so keep that in mind. Friday the 18th picks up a bit in size, maybe chest to head high, but the wind gets more cross-shore, making it a little more challenging.

The standout window is from Sunday the 20th through to Tuesday the 22nd. The winds are offshore and the water is clean, with waist-high sets that are just fun. But Tuesday morning is the absolute winner – it's dead glassy. No wind, clean lines, small but perfect. If you've only got one window to paddle out in the next two weeks, make it that one.

The water's warm, right at the usual 27 degrees, so it'll be a t-shirt and boardshorts job, maybe a rashie for the morning sessions. And be careful of those stormy afternoons early on; there are a few thunderstorms lurking about.

So that's the picture. A rough start, a flat middle, but a clean and glassy finish to the fortnight. The quality will be in the conditions, not the size. Go enjoy the calm ones.

Rusty.

Short Range Forecast

Moderate rain (total 18mm), heaviest on Mon night. Warm (max 28°C on Tue afternoon, min 26°C on Tue night). Winds decreasing (near gales from the SSE on Mon night, calm by Tue night).

Days 5-7 Weather Summary

Mostly dry. Warm (max 26°C on Thu afternoon, min 24°C on Thu night). Wind will be generally light.

Mon
7
Tuesday
8
Wednesday
9
Thursday
10
Friday
11
Saturday
12
Sunday
13
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
3
2
3
2
2
1
2
2
1
1
1
2
0
0
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)
2.2
SW
14
5
SSW
14
2.4
SSW
10
1.7
ENE
11
1.3
ENE
10
0.9
SSW
14
0.9
SSW
13
1.4
ENE
7
1.5
ENE
7
1.4
ENE
7
0.7
SW
16
1.3
ENE
11
1
ENE
11
1.1
ENE
10
0.7
SW
15
0.8
ENE
10
0.5
ENE
9
0.5
SW
15
0.7
ENE
9
0.4
SW
15
Wave Graph
Metric surfscale
Energy kJ
1999
8841
1000
650
356
269
257
203
231
192
268
380
245
250
242
128
48
107
84
54
Wind (km/h)
40
ESE
45
S
30
SSW
20
SW
5
S
10
E
10
ENE
15
ENE
25
ENE
25
ENE
20
ENE
20
ENE
20
ENE
15
ENE
15
ENE
15
ENE
20
ENE
25
ENE
20
NE
15
NE
Wind State
cross-on
on
cross-on
cross-on
glassy
cross
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
2:09AM0.32m
2:28PM0.72m
2:51AM0.39m
3:05PM0.69m
3:32AM0.45m
3:39PM0.64m
4:11AM0.50m
4:12PM0.57m
4:51AM0.54m
4:42PM0.50m
5:31AM0.57m
5:11PM0.43m
Low Tide
8:57PM0.08m
7:26AM0.06m
9:22PM0.06m
8:21AM0.06m
9:46PM0.05m
9:12AM0.07m
10:10PM0.04m
10:02AM0.10m
10:33PM0.04m
10:52AM0.13m
10:56PM0.05m
11:45AM0.17m
11:19PM0.06m
thunderstorm
thunderstorm
thunderstorm
clear
clear
clear
part cloud
rain showers
part cloud
part cloud
clear
clear
clear
part cloud
clear
clear
clear
part cloud
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:16
6:16
6:16
6:16
6:16
6:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:42
6:40
6:39
6:38
6:37
6:37
6:36
 mm
4
12
1
1
Temp °C
27
27
27
28
27
27
28
27
26
26
25
26
26
25
26
26
25
26
26
25
Feels °C
27
24
27
29
31
31
31
31
26
25
25
26
25
25
26
26
25
26
25
25
  • 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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