
Surf Forecasts:
In Betweens surf forecast from 3 Sep 2026:
- Best quality surf: Monday 7 Sep, 2AM (local time) - 7ft (2.2m), 12s period, ENE swell with cross-offshore winds.
- Most powerful swell: Tuesday 8 Sep, 8AM (local time) - 18ft (5.5m), 14s period, SSW swell with 11,976 kJ wave energy.
- Next surfable swell (1★+): Monday 7 Sep, 2AM (local time) - 7ft (2.2m), 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 Monday (Sep 07) at 2AM. The primary swell is predicted to be 2.2m and 12s period with a secondary swell of 1.8m and 13s. Another secondary swell of 1.7m and 12s 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 5.5m 14s and forecast to arrive on Tuesday (Sep 08) at 8AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 10s period and expected on Tuesday (Sep 08) at 8PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Mon 7th Sep) | 7ft (2.2m) 12s |
| Best Surf | 2AM (Mon 7th Sep) | 7ft (2.2m) 12s |
| Most Powerful | 8AM (Tue 8th Sep) | 18ft (5.5m) 14s |
Table - best surf conditions forecast for In Betweens over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s take a hard look at what we’ve got on the cards. It’s a bit of a mixed bag, and honestly, we’re going to have to wait for the real juice.
Right now, things are pretty ordinary. The early part of the window is ruled out almost entirely by strong, cross-off winds and messy, short-period swell. For the first few days, the conditions are just too poor to recommend a paddle. There’s a long gap here where the surf is either nonexistent or just ugly.
The first real glimmer of potential shows up on Saturday the 5th and into Sunday the 6th. We see the swell jump up significantly, with a clean 8ft from the ENE and a period stretching to a very long 14 seconds. The energy reading is strong, hitting in the thousands (2578), so there’s some serious grunt behind it. The wind is a cross-off, which keeps the surface reasonably clean. This is big, long-period groundswell, which can be a bit tricky for the beach breaks, making em run straight, but it means better shape and some proper grunt on the sets. Keep in mind, at over 7ft and peaking near 8ft, this is getting into territory that might be too much for beginners to handle comfortably.
The standout period looks to be around Monday the 7th. The swell holds firm at 8ft to 8ft from the ENE, still with a long period of 12 to 13 seconds. The energy really fires up to a massive 4301. The wind stays cross-off, which is treating us right. This looks like the best run of the whole forecast. The waves will have real push and the lineup might actually get some decent rhythm. It’s still clean and consistent, but this size is definitely for the experienced crew.
After that, it starts to fall away quickly. A strong southerly change rolls in on the 8th, putting the kibosh on any quality. The wind goes onshore, the swell direction swings around, and the surf quality drops off a cliff. The rest of the second week is a slow fade. We see smaller, cleaner days between the 9th and the 12th with swell dropping from 6ft back down to about 2ft, but the energy is weak and the wind is all over the place. The last week is a write-off, with tiny, inconsistent lumps.
So, to boil it down: The absolute best window is from the 5th through to the 7th of September. For the experienced surfer, the Monday the 7th is your target—big, powerful, long-period groundswell with clean cross-off winds. That’s the one to circle on the calendar. The rest... well, it’s a waiting game.
Stay salty,
Rusty
Short Range ForecastMostly dry. Warm (max 26°C on Wed afternoon, min 25°C on Wed night). Mainly strong winds. | Days 5-7 Weather SummaryHeavy rain (total 24mm), heaviest during Mon night. Warm (max 27°C on Sat afternoon, min 24°C on Sun night). Winds increasing (light winds from the ENE on Sun night, near gales from the SSE by Mon night). | |||||||||||||||||||
Wed 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | ||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map | ||||||||||||||||||||
Wave Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 7 | ENE 8 | ENE 7 | ENE 7 | E 14 | E 14 | ENE 14 | ENE 14 | ENE 13 | ENE 13 | ENE 12 | ENE 12 | ENE 13 | SW 14 | SW 15 | SSW 13 | S 10 | SSW 9 |
Wave Graph | ||||||||||||||||||||
456 | 592 | 498 | 623 | 498 | 456 | 577 | 649 | 2039 | 1740 | 1630 | 1485 | 1200 | 1316 | 1671 | 1788 | 6206 | 9223 | 1330 | 499 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | 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-on | on | on | on |
High Tide | 6:54PM0.28m | 9:39AM0.62m | 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 | |||||||
Low Tide | 3:38PM0.25m | 1:25AM0.06m | 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 | |||||||
— | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | |
6:45 | — | — | 6:45 | — | — | 6:44 | — | — | 6:43 | — | — | 6:43 | — | — | 6:42 | — | — | 6:40 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 5 | 1 | 3 | 10 | 5 | 2 | — |
Temp °C | 26 | 25 | 25 | 26 | 25 | 26 | 26 | 25 | 26 | 27 | 26 | 27 | 27 | 26 | 26 | 26 | 27 | 27 | 27 | 27 |
Feels °C | 22 | 21 | 22 | 22 | 21 | 22 | 23 | 22 | 23 | 25 | 26 | 26 | 26 | 26 | 25 | 23 | 24 | 24 | 25 | 29 |
Swell 1 Height (m) Direction Period (s) | S 16 | S 15 | S 15 | SSE 13 | SSE 12 | S 12 | E 14 | E 14 | S 12 | S 12 | SSW 12 | SSW 12 | ENE 12 | ENE 12 | ENE 13 | SW 14 | SW 15 | ENE 11 | WSW 10 | SSW 9 |
318 | 275 | 209 | 454 | 308 | 353 | 577 | 649 | 461 | 538 | 669 | 548 | 1200 | 1316 | 1671 | 1570 | 6206 | 668 | 863 | 499 | |
Swell 2 Height (m) Direction Period (s) | S 11 | E 13 | SE 12 | E 12 | E 14 | E 14 | S 11 | S 12 | SW 18 | SSW 17 | SSE 9 | SSW 16 | SSW 12 | SSW 13 | SSW 13 | SSW 17 | NNW 12 | E 14 | ENE 10 | ENE 9 |
40 | 123 | 149 | 145 | 334 | 357 | 305 | 322 | 78 | 119 | 29 | 314 | 1081 | 1066 | 1253 | 510 | 14 | 140 | 428 | 190 | |
Swell 3 Height (m) Direction Period (s) | E 14 | SSE 15 | E 13 | S 14 | SSW 13 | SW 12 | SW 13 | S 13 | NNE 10 | NNE 10 | SSE 9 | SSE 10 | SSE 10 | S 10 | SSW 17 | S 10 | E 15 | E 14 | SSW 15 | W 8 |
66 | 93 | 162 | 146 | 69 | 6 | 27 | 176 | 20 | 19 | 29 | 56 | 37 | 71 | 381 | 154 | 109 | 189 | 300 | 149 | |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 7 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 14 | ENE 14 | ENE 13 | ENE 13 | — | ENE 12 | ENE 12 | ENE 12 | ENE 12 | SSW 13 | S 10 | — |
456 | 592 | 498 | 623 | 498 | 456 | 498 | 498 | 2039 | 1740 | 1630 | 1485 | — | 793 | 996 | 1788 | 1706 | 9223 | 1330 | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 44 | 47 | 148 | 127 | 39 | 44 | 126 | 127 | 38 | 41 | 1 | 30 | 31 | 0 | 30 | 47 | 126 | 153 | 142 | 16 |
Best forecast wave conditions in Oahu | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
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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.










