Surf Forecasts:
In Betweens surf forecast from 26 Aug 2026:
- Most powerful swell: Thursday 27 Aug, 11AM (local time) - 3.5ft (1.1m), 17s period, S swell with 716 kJ wave energy.
Best Forecast Surf Conditions for In Betweens this week:
The most powerful waves expected at In Betweens in the next 16 days are 1.1m 17s and forecast to arrive on Thursday (Aug 27) at 11AM. 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 8s period and expected on Monday (Aug 31) at 8PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11AM (Thu 27th Aug) | 3.5ft (1.1m) 17s |
Table - best surf conditions forecast for In Betweens over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s take a look at what’s happening for us.
The 16-day window is a tough one for In-Betweens. This is a reef setup that’s beginner-friendly and fairly consistent, but we’re dealing with a lot of cross-off winds and a swell that’s just not cooperating for most of the run. The water temperature is 81°, which is about normal for this time of year, so no surprises there.
The opening stretch from Wednesday, the 26th, through to Friday, the 28th, offers small, clean waves around 2ft to 4ft from the SSW and S, with moderate combined energy (578 to 898). The swell periods are decent, 14 to 18 seconds, so there’s some groundswell energy in the water, but the size is tiny and the forecasts are marginal. It’s not really worth paddling out for.
Then from Saturday, the 29th, into early September, things get messier. The swell picks up to 5ft to 6ft, but it switches to a short-period ENE windswell (only 7 to 9 seconds) and the wave energy is moderate (451 to 822). The winds are fresh cross-off from the ENE, which keeps the surface clean, but the quality is poor – this is more of a chop-fest than proper surf. The combined energy sits around 568 to 822, but it’s just not the right kind of swell. This kind of setup is honestly more interesting for kite surfing than paddle surfing.
There’s a gap of several days with no real recommendations. The best chance we see comes later, around the 5th and 6th of September. On Saturday the 5th, the morning shows a 4ft E swell with a 11-second period and gentle cross-shore wind (9 mph), with combined energy 575. The afternoon is a little cleaner with cross-off winds. Then on Sunday the 6th, we get a 2ft to 3ft SSW swell with a long 16-second period and moderate cross-off wind. The energy picks up to 423 to 726. These are still marginal, but the longer period means better-shaped waves and easier paddling, especially at a reef. The wind is moderate, so it’s about the best we’ve got.
The standout is the morning of Monday, the 7th of September. We’ve got a 3ft SSW swell, very long period of 16 seconds, and clean cross-off winds from the ENE at 19 mph. The combined energy is strong at 1174. This is the kind of long-period groundswell that a reef like In-Betweens can handle – it won’t break too straight, and the wind will keep it tidy. The waves are small, so it’s not pumping, but it’s the cleanest, most energetic option in the whole window. It’s a promising call, but being that far out, it’s worth keeping an eye on.
After that, from the 8th of September onward, it’s back to poor surf with short-period windswell and strong winds. The 10th looks really rough with rain showers and low energy. Not a good way to finish.
Honestly, it’s a quiet period – the consistent nature of In-Betweens means it usually doesn’t stay this flat for long, but this run is pretty blank. If you’re keen, pencil in the 7th, but don’t hold your breath.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Wed morning, min 25°C on Wed morning). Mainly fresh winds. | Days 4-6 Weather SummarySome drizzle, heaviest during Mon night. Warm (max 27°C on Mon afternoon, min 25°C on Sat morning). Winds decreasing (fresh winds from the ENE on Sat afternoon, light winds from the ENE by Mon night). | ||||||||||||||||||||
Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | |||||||||||||||
AM | 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) | SSW 14 | S 18 | S 19 | S 17 | S 16 | S 16 | S 14 | S 14 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | SSW 14 | ENE 8 | ENE 9 | ENE 8 | ENE 8 |
Wave Graph | |||||||||||||||||||||
215 | 307 | 351 | 716 | 427 | 482 | 260 | 329 | 290 | 268 | 373 | 265 | 285 | 217 | 199 | 218 | 138 | 466 | 377 | 368 | 381 | |
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-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 3:24PM0.68m | 3:31AM0.37m | 3:53PM0.66m | 4:08AM0.41m | 4:20PM0.62m | 4:47AM0.46m | 4:49PM0.57m | 5:30AM0.50m | 5:18PM0.51m | 6:18AM0.53m | 5:48PM0.44m | 7:14AM0.56m | 6:20PM0.36m | ||||||||
Low Tide | 8:24AM0.05m | 10:12PM0.10m | 9:05AM0.06m | 10:32PM0.08m | 9:46AM0.07m | 10:54PM0.07m | 10:31AM0.10m | 11:17PM0.05m | 11:22AM0.14m | 11:42PM0.05m | 12:22PM0.19m | 00:10AM0.05m | 1:40PM0.23m | 00:43AM0.05m | |||||||
6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | |
— | 6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — | — | 6:49 | — | — | 6:47 | — | — | 6:46 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | 2 |
Temp °C | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 25 | 26 | 25 | 26 | 26 | 25 | 26 | 27 | 26 | 27 | 27 | 26 |
Feels °C | 23 | 23 | 22 | 23 | 23 | 23 | 23 | 23 | 22 | 22 | 23 | 22 | 23 | 23 | 23 | 24 | 26 | 26 | 28 | 27 | 26 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | S 18 | S 19 | S 17 | S 16 | S 16 | S 14 | S 14 | S 13 | E 13 | E 12 | E 12 | SSW 16 | S 12 | SSW 15 | SSW 15 | SSW 14 | S 10 | ENE 9 | S 18 | S 17 |
215 | 307 | 351 | 716 | 427 | 482 | 260 | 329 | 229 | 126 | 110 | 106 | 171 | 100 | 199 | 144 | 138 | 50 | 377 | 230 | 273 | |
Swell 2 Height (m) Direction Period (s) | S 18 | SSW 13 | SSW 13 | N 8 | SSW 12 | NNE 7 | E 16 | E 15 | E 14 | S 13 | S 13 | SSW 17 | E 11 | SSW 16 | S 11 | S 11 | S 11 | S 19 | SSW 18 | S 12 | S 10 |
165 | 135 | 137 | 6 | 47 | 10 | 78 | 109 | 146 | 85 | 89 | 186 | 65 | 162 | 59 | 57 | 57 | 192 | 329 | 75 | 33 | |
Swell 3 Height (m) Direction Period (s) | SSE 12 | W 10 | SSW 16 | W 9 | NNE 8 | E 17 | SSW 11 | SSW 19 | SW 19 | S 13 | S 12 | SSW 12 | SSW 12 | ENE 11 | ENE 10 | ENE 10 | E 10 | SW 14 | S 10 | SW 14 | SW 14 |
14 | 8 | 50 | 7 | 7 | 24 | 22 | 36 | 56 | 89 | 75 | 47 | 46 | 40 | 35 | 32 | 46 | 53 | 48 | 51 | 51 | |
Wind waves Height (m) Direction Period (s) | E 6 | E 6 | E 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | — | ENE 8 | ENE 8 |
184 | 184 | 206 | 182 | 144 | 150 | 182 | 161 | 290 | 268 | 373 | 265 | 285 | 217 | 198 | 218 | 348 | 466 | — | 368 | 381 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 38 | 32 | 32 | 30 | 31 | 30 | 30 | 44 | 30 | 38 | 41 | 30 | 38 | 33 | 30 | 30 | 30 | 1 | 32 | 30 | 1 |
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.











