Surf Forecasts:
In Betweens surf forecast from 25 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 1.6m 6s period and expected on Wednesday (Aug 26) 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 crew, Rusty here. Let’s cut to it—this forecast for the In-Betweens is a tough one. We’re looking at a long stretch of mostly so-so waves, with just a couple of bright spots way down the line.
The wind is the main villain here. We’ve got a persistent ENE breeze, blowing cross-off and often at a fresh clip, for the first week and a half. It keeps the surface clean, but the swell is just not cooperating. Starting Tuesday morning, we’ve got a 6ft easterly swell, but it’s a short period of 7 seconds and the combined energy is moderate (562). The water is a warm 81°, which is about average for this time of year, so the wetsuit stays in the car.
The big problem is the swell direction. The In-Betweens really want a SSE swell to line up right, and we’re mostly getting E and ENE. That means poor surf and scores of zero for the first few days. The energy fluctuates, hitting a moderate 833 on Thursday morning, but the period is long (17 seconds) and the direction is all wrong, so it’s just a jumbled mess.
We go through a whole run of days where the surf is there, but the quality is never there. The swell hits 7ft on Sunday, 30th August, but it’s still that short, wind-affected ENE pulse. It’s the kind of stuff that’s just too lumpy to get stoked on. The wind stays on it, blowing a steady 18-22 mph.
The first real window opens on Wednesday, 2nd September. The swell drops, but the wind finally eases to a gentle 9 mph cross-off in the afternoon. The swell switches to a 3ft southerly with a long 16-second period, pushing the energy to a moderate 584. The spot scores a 3, which is the best we’ll see for a while. That afternoon is the standout of the first two weeks. It’s small, but it’ll be clean.
After that, it’s back to the grind for a few more days before the real potential shows up. The period from Saturday, 5th September, to the end of the forecast starts to build some serious energy. That Saturday afternoon brings a 6ft swell from the ENE with a period jumping to 11 seconds, and the energy hits a strong 1078. The wind is still a moderate cross-off, and the score climbs to a 2. Then Sunday, 6th September, is the one to circle. We’re looking at consistent 6-6ft ENE swells with a period of 11-12 seconds. The combined energy is very strong, hitting 1621 on Sunday morning and 1358 in the afternoon. The wind is a manageable 12 mph cross-off, and the scores hit a 3. This is the best chance for a proper surf. The long period will make the waves punchy, and with the ENE direction, it should set up decently on the reef, though long-period swells can sometimes race through on beach breaks.
Monday, 7th September, is a close second. The swell drops to 5-5ft, but the period stays solid at 11 seconds, and the wind is light ESE at 6 mph, making for a clean, light cross-shore. The energy is still strong, around 1006-1088. That’s promising.
The last couple of days show another building pulse. By Wednesday, 9th September, we’re looking at 7-7ft ENE swell with an 11-second period and very strong energy (1450). The wind is moderate cross-off, but at over 7ft, this is strictly for the experts. It’s a good note to go out on, but it’s a long wait.
So, the bottom line: the first two weeks are a grind. The standout is Wednesday, 2nd September, for a small, clean afternoon session. The absolute best on offer is Sunday, 6th September, with strong, consistent groundswell and manageable wind. It’s a long-range call, so keep an eye on it, but that’s the one to mark on the calendar.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Tue morning, min 25°C on Tue night). Mainly fresh winds. | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Fri morning, min 25°C on Fri morning). Mainly fresh winds. | ||||||||||||||||||||
Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | |||||||||||||||
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) | E 7 | E 7 | E 7 | SSW 14 | S 18 | S 19 | S 17 | S 16 | S 16 | S 14 | S 14 | ENE 7 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 |
Wave Graph | |||||||||||||||||||||
326 | 255 | 236 | 215 | 307 | 351 | 716 | 427 | 482 | 260 | 329 | 225 | 216 | 257 | 326 | 217 | 218 | 256 | 204 | 218 | 447 | |
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 | 2:56PM0.68m | 2:55AM0.33m | 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 | ||||||||
Low Tide | 9:53PM0.11m | 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 | ||||||||
6:11 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | |
— | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — | — | 6:49 | — | — | 6:47 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 26 | 26 | 26 | 25 | 25 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 26 | 26 | 26 | 25 |
Feels °C | 23 | 23 | 24 | 23 | 22 | 22 | 23 | 23 | 22 | 23 | 23 | 22 | 23 | 23 | 22 | 24 | 23 | 24 | 23 | 24 | 22 |
Swell 1 Height (m) Direction Period (s) | SSW 12 | SSW 16 | SSW 15 | SSW 14 | S 18 | S 19 | S 17 | S 16 | S 16 | S 14 | S 14 | S 13 | E 13 | E 12 | S 12 | SSW 16 | S 12 | SSW 15 | SSW 15 | SSW 14 | S 10 |
85 | 142 | 121 | 215 | 307 | 351 | 716 | 427 | 482 | 260 | 329 | 225 | 126 | 110 | 102 | 171 | 100 | 199 | 144 | 138 | 53 | |
Swell 2 Height (m) Direction Period (s) | SSW 16 | SSW 12 | SSW 12 | S 18 | SSW 13 | SSW 13 | N 8 | SSW 12 | NNE 7 | E 16 | E 15 | E 14 | S 13 | S 13 | E 12 | E 11 | SSW 16 | S 11 | S 11 | S 11 | S 19 |
146 | 81 | 81 | 165 | 135 | 137 | 6 | 47 | 10 | 78 | 109 | 148 | 121 | 89 | 104 | 63 | 162 | 59 | 82 | 82 | 190 | |
Swell 3 Height (m) Direction Period (s) | SSE 12 | SSE 11 | SSW 18 | SSE 12 | SSE 6 | SSW 16 | WNW 10 | W 10 | E 17 | SSW 11 | SSW 19 | SW 19 | S 13 | S 12 | SSW 17 | SSW 12 | E 11 | ENE 11 | ENE 10 | ENE 10 | SW 14 |
29 | 24 | 109 | 14 | 4 | 50 | 9 | 7 | 24 | 22 | 36 | 56 | 89 | 75 | 188 | 46 | 62 | 38 | 33 | 31 | 49 | |
Wind waves Height (m) Direction Period (s) | E 7 | E 7 | E 7 | E 6 | ENE 6 | E 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 7 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 |
326 | 255 | 236 | 213 | 188 | 182 | 145 | 170 | 144 | 167 | 164 | 189 | 216 | 257 | 326 | 217 | 218 | 256 | 204 | 218 | 447 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 38 | 38 | 30 | 34 | 33 | 30 | 31 | 31 | 30 | 30 | 44 | 30 | 32 | 39 | 30 | 30 | 38 | 30 | 38 | 41 | 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.











