Surf Forecasts:
In Betweens surf forecast from 22 Aug 2026:
- Most powerful swell: Thursday 27 Aug, 11AM (local time) - 3.5ft (1.0m), 17s period, S swell with 594 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 1.0m 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 1.4m 6s period and expected on Wednesday (Aug 26) at 11PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11AM (Thu 27th Aug) | 3.5ft (1.0m) 17s |
Table - best surf conditions forecast for In Betweens over the next 16 days.
The Lowdown
G’day, Rusty here. Let’s talk about what’s happening at In Betweens over the next couple of weeks. Straight up, it’s a rough start – we’ve got a gap of nearly a week with zero worth paddling out for. The forecast is grim from now until the end of August, with poor surf and brutal cross-off winds. The swell is mostly short-period junk with weak energy, and the combined energy values sit around (506 to 699), which is moderate at best but all chopped up.
Come Saturday morning the 31st of August, things start to flicker. We’ve got a 6ft swell out of the ENE with a period of 12 seconds – that’s a longer-period groundswell starting to push in. The combined energy jumps to (1038), so there’s some proper moderate power behind it. Still, the wind is cross-off from the ENE at 25 mph, which is strong enough to keep it lumpy. It’s marginal, but it’s the first sign of life.
Now, if you’ve got patience, the real standout is Wednesday the 4th of September. That afternoon, the wind backs off to a gentle breeze from the ENE at 9 mph, still cross-off, and we get a 5ft swell from the ENE with a short period of 7 seconds. It’s not a classic groundswell, but the combined energy is (518), and the conditions are clean. The rating nudges up because it’s the best in a long dry spell. For surfers who can handle a bit of chop, the morning of the 4th is also okay with a 2ft S swell (14-second period) and glassy conditions – small but clean.
Looking further out to the 5th and 6th of September, the swell really starts to ramp up. On Saturday the 5th, the morning shows a 4ft swell from the E with a period of 16 seconds – that’s a very long-period groundswell. The combined energy is massive at (1415). Then Saturday afternoon it jumps to 6ft from the E, period 16 seconds, energy (2133). By Sunday the 6th, we’re looking at a 10ft ENE swell with a period of 14 seconds, energy through the roof at (3652). That’s strong wave energy, no doubt. But here’s the catch – that size is in the expert range, and the break is a reef setup. Long-period groundswell can be tricky on a reef, but with the swell direction matching the optimum (SSE is the guide, and this is ENE/E, so not perfect), it’s still a big, powerful swell. The wind stays cross-off from the ENE at 16 mph, so it won’t be glassy, but it’ll be clean enough. This is promising, but being over a week out, treat it as a “heaps of potential but keep an eye on it” sort of call.
The water temp is sitting at 80°, with a anomaly of +0.2° – so pretty much average for this time of year, nothing shocking.
Bottom line: the first week is a write-off. The 31st of August is the first hope. The 4th of September afternoon is the pick for a clean, manageable session. The 5th and 6th of September have the biggest swell of the period, but it’s for experienced surfers only. Crowds? In Betweens can get busy sometimes, so don’t expect to have it to yourself.
Rusty, signing off.
Short Range ForecastMostly dry. Warm (max 27°C on Mon afternoon, min 25°C on Sat night). Mainly strong winds. | Days 4-6 Weather SummaryMostly dry. Warm (max 27°C on Tue afternoon, min 25°C on Tue night). Mainly fresh winds. | ||||||||||||||||||||
Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | |||||||||||||||
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) | SW 16 | ENE 7 | E 7 | ENE 7 | ENE 7 | ENE 6 | ENE 7 | ENE 6 | E 7 | ENE 7 | ENE 7 | ENE 7 | E 7 | S 18 | S 19 | S 17 | S 16 | S 16 | S 14 | S 14 | E 16 |
Wave Graph | |||||||||||||||||||||
261 | 286 | 478 | 247 | 290 | 260 | 239 | 194 | 225 | 285 | 301 | 247 | 302 | 307 | 351 | 594 | 427 | 482 | 260 | 329 | 310 | |
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 | 1:12PM0.63m | 1:06AM0.23m | 1:52PM0.66m | 1:46AM0.26m | 2:26PM0.67m | 2:21AM0.29m | 2:56PM0.68m | 2:55AM0.33m | 3:24PM0.68m | 3:31AM0.37m | 3:53PM0.66m | 4:08AM0.41m | 4:20PM0.62m | 4:47AM0.46m | |||||||
Low Tide | 9:00PM0.16m | 6:08AM0.10m | 9:18PM0.14m | 6:59AM0.08m | 9:35PM0.13m | 7:43AM0.06m | 9:53PM0.11m | 8:24AM0.05m | 10:12PM0.10m | 9:05AM0.06m | 10:32PM0.08m | 9:46AM0.07m | 10:54PM0.07m | ||||||||
6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | |
— | 6:55 | — | — | 6:54 | — | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 27 | 26 | 26 | 27 | 26 | 25 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 |
Feels °C | 26 | 24 | 24 | 24 | 23 | 24 | 24 | 25 | 25 | 25 | 25 | 24 | 22 | 23 | 24 | 24 | 24 | 23 | 23 | 23 | 21 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 16 | SSW 16 | SW 15 | SSW 15 | SW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 12 | SSW 16 | SSW 15 | SSW 14 | S 18 | S 19 | S 17 | S 16 | S 16 | S 14 | S 14 | S 13 |
261 | 251 | 212 | 116 | 191 | 100 | 166 | 156 | 127 | 85 | 142 | 121 | 215 | 307 | 351 | 594 | 427 | 482 | 260 | 329 | 229 | |
Swell 2 Height (m) Direction Period (s) | W 10 | W 10 | S 14 | S 13 | SSE 13 | SSE 13 | SSE 12 | SSE 12 | SSE 12 | SSW 16 | SSW 12 | SSW 12 | S 18 | SSW 13 | SSW 13 | S 12 | SSW 12 | NNE 8 | E 17 | E 16 | E 16 |
51 | 53 | 106 | 90 | 34 | 66 | 50 | 48 | 46 | 146 | 81 | 81 | 165 | 135 | 137 | 71 | 46 | 11 | 148 | 190 | 310 | |
Swell 3 Height (m) Direction Period (s) | S 12 | S 12 | WNW 10 | SSW 15 | S 11 | SSW 15 | SSW 18 | SE 7 | SSW 17 | SSE 12 | SSE 10 | SSW 18 | SSE 12 | SSE 12 | SSW 16 | N 8 | NNE 8 | E 18 | SSW 11 | SSW 19 | SW 19 |
47 | 47 | 34 | 76 | 22 | 71 | 62 | 14 | 94 | 27 | 21 | 109 | 14 | 14 | 50 | 6 | 7 | 59 | 22 | 36 | 57 | |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 7 | E 7 | ENE 7 | ENE 7 | ENE 6 | ENE 7 | ENE 6 | E 7 | ENE 7 | ENE 7 | ENE 7 | E 7 | ENE 6 | ENE 6 | E 6 | E 6 | ENE 6 | ENE 6 | ENE 6 | ENE 7 |
198 | 286 | 478 | 247 | 290 | 260 | 239 | 194 | 225 | 285 | 301 | 247 | 302 | 170 | 126 | 108 | 94 | 145 | 155 | 144 | 276 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 32 | 38 | 38 | 38 | 41 | 38 | 38 | 31 | 30 | 32 | 38 | 30 | 38 | 32 | 30 | 30 | 30 | 1 | 32 | 44 | 30 |
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.











