In Betweens Surf Break

Lat Long: 21.28° N 157.84° W

In Betweens Surf Forecast and Surf Report

Issued: 1 pm 03 Sep 2026 (local time)

Forecast update in  hr  min

Today's In Betweens sea temperature is
27.1°C
0.2° 

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 4 Sep 2026:

  • Best quality surf: Sunday 6 Sep, 8PM (local time) - 7.5ft (2.3m), 12s period, ENE swell with cross-offshore winds.
  • Most powerful swell: Monday 7 Sep, 8PM (local time) - 15ft (4.5m), 14s period, SSW swell with 8,639 kJ wave energy.
  • Next surfable swell (1★+): Sunday 6 Sep, 8PM (local time) - 7.5ft (2.3m), 12s 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 Sunday (Sep 06) at 8PM. The primary swell is predicted to be 2.3m and 12s period with a secondary swell of 1.8m and 14s. Another secondary swell of 0.5m and 19s 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 4.5m 14s and forecast to arrive on Monday (Sep 07) at 8PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.8m 10s period and expected on Tuesday (Sep 08) at 5AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Sun 6th Sep)7.5ft (2.3m) 12s
Best Surf 8PM (Sun 6th Sep)7.5ft (2.3m) 12s
Most Powerful 8PM (Mon 7th Sep)15ft (4.5m) 14s

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


The Lowdown

Alright, this is Rusty. Let’s take a look at what’s coming up for In-Betweens over the next couple of weeks.

Honestly, the outlook is a tough one to get excited about. We’ve got a long stretch of marginal to poor surf with a cross-off breeze that keeps the surface clean, but the waves themselves just aren’t cooperating for paddle surfing. The whole first week and a half is a bit of a battle.

Things start off Thursday afternoon, September 3rd, with a messy 8ft ENE swell but it’s short-period at 7 seconds, combined energy is moderate at 1090, and that ENE wind is pumping at 25 mph. The water temp is 81°, which is about average for this time of year. It’s just not worth suiting up for.

Friday the 4th sees the swell drop to 4ft but shifts south with a nice long 13-second period, and combined energy builds to 1335. The wind is still a fresh 22 mph cross-off, so the surface is clean, but the model flags it as marginal. Friday afternoon is similar at 5ft, 12 seconds, and even more energy at 1602, but again, it’s not clicking.

Saturday the 5th is the most interesting window early on. Morning and afternoon both show a clean 7ft swell from the ENE, 13-second period, and combined energy jumps way up to 2305. That’s a solid moderate-to-strong energy reading. The wind is a more manageable 19 mph cross-off. Still, the forecast score is only a 2, so while the ingredients are there, the quality just isn’t there. It might be worth a look for a dedicated surfer, but I wouldn’t call it a standout.

Sunday the 6th holds similar size at 7ft to 7ft, but the wind drops a bit to 12-16 mph. The combined energy peaks at 2485 on Sunday afternoon, the best energy reading of the early period. Still, it’s a marginal call.

Then Monday the 7th rolls in with the biggest pulse. Monday morning sees a 8ft SSW groundswell with a very long 15-second period, and combined energy absolutely spikes to 5381. That is strong energy. But here’s the catch: the wind swings ESE at 16 mph, creating a cross-shore chop. By Monday afternoon, the swell jumps to 13ft with the same long period and energy at 8984, but the wind is onshore from the SE at 22 mph, making it lumpy and poor. That setup is way too big for beginners at 13ft, and with that onshore wind, this is more of a kite-surfing day than paddle surfing.

After that, the second week is a washout for quality. From Tuesday the 8th onward, we see a mix of small swells from 2ft to 8ft, mostly ENE, but the period is short (8 seconds) and the wind stays a fresh to strong cross-off at 19-25 mph. The combined energy readings are mostly in the 360 to 1600 range—moderate at best. There’s a little blip on September 15th with a 7ft ENE swell and 10-second period giving 1614 energy, but the forecast score is still low. Nothing here is going to get your heart racing.

The only real standout is Saturday the 5th and Sunday the 6th, with that cleaner 7ft swell and dropping wind. It’s not perfect, but it’s the closest thing to a window we’ve got. The rest of the 16 days is a long, frustrating gap with no solid recommendations. For an exposed reef break like In-Betweens, that’s just how it goes sometimes. Crowds are listed as “sometimes” here, so you might not have to fight for a wave, but honestly, you’re not missing much right now.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Sun morning. Warm (max 26°C on Thu afternoon, min 25°C on Thu afternoon). Mainly strong winds.

Days 5-7 Weather Summary

Heavy rain (total 33mm), heaviest during Sun night. Warm (max 28°C on Tue afternoon, min 23°C on Sun night). Winds decreasing (strong winds from the SSE on Mon night, light winds from the SE by Tue night).

Thu
3
Friday
4
Saturday
5
Sunday
6
Monday
7
Tuesday
8
Wednesday
9
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
2
2
2
2
2
2
3
4
4
0
0
0
1
2
1
1
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.3
ENE
7
2.2
ENE
7
1.3
S
13
1.2
E
14
2.1
E
14
2.2
ENE
13
2.2
ENE
13
2.2
ENE
13
2.1
ENE
12
2.2
ENE
12
2.1
SSW
14
2.5
SSW
15
4
SSW
15
3.5
SW
11
1.6
ENE
11
1.3
ENE
10
0.9
SSW
14
0.9
SSW
14
0.8
E
13
0.8
E
13
Wave Graph
Metric surfscale
Energy kJ
558
487
529
594
1807
1641
1641
1568
1240
1369
1700
3195
6963
2891
550
371
356
273
229
219
Wind (km/h)
40
ENE
35
ENE
35
ENE
35
ENE
30
ENE
30
ENE
30
ENE
25
ENE
25
ENE
20
ENE
25
NE
25
ESE
35
SE
40
S
20
S
15
SSE
5
E
25
ENE
35
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
cross-on
on
on
on
cross
cross-off
cross-off
cross-off
High Tide
7:57PM0.22m
10:58AM0.66m
10:35PM0.19m
12:05PM0.69m
00:18AM0.21m
1:00PM0.73m
1:21AM0.26m
1:47PM0.73m
2:09AM0.32m
2:28PM0.72m
2:51AM0.39m
3:05PM0.69m
3:32AM0.45m
Low Tide
6:22PM0.22m
2:24AM0.08m
7:30PM0.17m
3:46AM0.09m
8:03PM0.13m
5:11AM0.08m
8:31PM0.10m
6:25AM0.07m
8:57PM0.08m
7:26AM0.06m
9:22PM0.06m
8:21AM0.06m
9:46PM0.05m
clear
clear
part cloud
clear
clear
clear
clear
part cloud
thunderstorm
mod rain
rain showers
part cloud
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:15
6:15
6:16
6:16
6:16
6:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:45
6:44
6:43
6:43
6:42
6:40
6:39
 mm
1
8
14
7
2
1
1
Temp °C
26
25
26
26
25
26
26
25
26
26
26
27
27
27
27
28
27
27
27
26
Feels °C
22
21
22
22
22
24
23
24
25
26
25
27
26
25
28
31
31
27
26
25
  • 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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