Surf Forecasts:
In Betweens surf forecast from 14 Aug 2026:
- Best quality surf: Monday 17 Aug, 2AM (local time) - 6ft (1.9m), 8s period, ENE swell with cross-offshore winds.
- Most powerful swell: Sunday 16 Aug, 5AM (local time) - 15ft (4.5m), 10s period, E swell with 3,502 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 2AM (local time) - 6ft (1.9m), 8s 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 (Aug 17) at 2AM. The primary swell is predicted to be 1.9m and 8s period with a secondary swell of 0.8m and 7s. Another secondary swell of 0.8m and 14s 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 10s and forecast to arrive on Sunday (Aug 16) at 5AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 7s period and expected on Wednesday (Aug 19) at 11PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Mon 17th Aug) | 6ft (1.9m) 8s |
| Best Surf | 2AM (Mon 17th Aug) | 6ft (1.9m) 8s |
| Most Powerful | 5AM (Sun 16th Aug) | 15ft (4.5m) 10s |
Table - best surf conditions forecast for In Betweens over the next 16 days.
The Lowdown
Alright, mate, Rusty here. Let's have a look at what's on the menu for the next couple of weeks.
First up, we're looking at In-Betweens, a reef break that's a decent option for beginners. It's fairly consistent and exposed to swell, but the wind is a bit of a character for most of the run. The water's sitting at 81°, which is pretty much normal for this time of year – nothing to write home about.
Right off the bat, we're in a bit of a rough patch. Friday morning the 14th starts with a 7 ft swell from the ENE, but the wind is a solid 22 mph cross-off, so it's not clean. That theme carries through the weekend. Saturday the 15th sees the swell jump up to 10 ft and even 12 ft, but with near gale-force winds, it's a write-off – only for the brave, and even then, the quality's poor. Sunday the 16th is a write-off too, with moderate rain and a risk of thunderstorms. The surf is messy and lumpy. Honestly, the first few days are a bust.
Things start to look a little less angry from Monday the 17th, but the swell drops right off. We're looking at 6 ft and then 3 ft, with the wind still a bit punchy. The energy is weak to moderate (648 and 542). There's a long period swell from the S on Monday afternoon (14 seconds), which could be interesting for a point or reef, but for a beach break like In-Betweens, it might just close out. The conditions are still marginal.
The whole middle of the week is pretty flat. From Tuesday the 18th right through to Saturday the 23rd, we're seeing swell heights under 3 ft, with periods all over the shop. The swell energy is on the low side (300 to 480). There's a little spike of long-period swell from the SSW on Thursday the 20th (18 seconds), but it's only 2 ft, so it's a real slow-motion affair. The wind is light to moderate, but the waves are just too small to get excited about. This is a real lull.
Then we get a bit of a pulse. Monday the 24th and Tuesday the 25th see the swell pick up to 5 ft and 6 ft from the ENE, but it's short period (7-8 seconds) and the wind is a fresh 19-22 mph cross-off. The energy is moderate (549 to 681), but the wind is making it a messy, bumpy affair. Not ideal.
Now, the real standout is the very end of the outlook. Friday the 28th of August is the best of the lot. We've got a 5 ft swell from the E, with a long period of 16-17 seconds. The wind is a gentle 9 mph, cross-off, and the forecast says "excellent surf conditions for experienced surfers". The swell energy is strong (1398). This is a groundswell, and on a reef like In-Betweens, it should produce some nice, well-shaped lines. Just be aware that long-period swells can be a bit tricky on the paddle out, but the sets will be worth it. This one's a proper call.
Saturday the 29th is still okay, with a 4 ft swell from the E, period 14 seconds, and light winds. The energy is moderate (996). It's a solid follow-up session, but not as good as Friday.
So, to sum it up: the first two weeks are a real struggle with wind and small surf. The highlight is definitely Friday the 28th of August. That's the one to circle. Get on it.
Rusty
Short Range ForecastHeavy rain (total 37mm), heaviest during Sun morning. Warm (max 27°C on Fri afternoon, min 25°C on Fri morning). Winds decreasing (gales from the ENE on Sat night, light winds from the ENE by Sun night). | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Mon morning, min 24°C on Wed night). Mainly fresh winds. | ||||||||||||||||||||
Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | |||||||||||||||
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) | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 9 | E 10 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | S 14 | S 13 | S 13 | ENE 7 | ENE 8 | SW 16 | ENE 8 | SW 16 | SSW 18 | SSW 17 | SW 16 |
Wave Graph | |||||||||||||||||||||
494 | 540 | 1081 | 1452 | 2232 | 3457 | 1781 | 858 | 463 | 310 | 260 | 222 | 165 | 163 | 151 | 140 | 172 | 129 | 207 | 200 | 274 | |
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 | 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 | 5:22PM0.62m | 6:06AM0.44m | 5:54PM0.53m | 6:57AM0.47m | 6:24PM0.45m | 7:54AM0.49m | 6:52PM0.37m | 8:59AM0.51m | 7:16PM0.30m | 10:13AM0.53m | 11:25AM0.56m | 10:11PM0.21m | |||||||||
Low Tide | 10:49AM0.08m | 00:03AM0.04m | 11:43AM0.14m | 00:30AM0.05m | 12:43PM0.20m | 00:58AM0.06m | 1:59PM0.25m | 1:27AM0.08m | 3:56PM0.27m | 2:01AM0.10m | 2:47AM0.12m | 8:27PM0.20m | |||||||||
6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — | |
— | 7:01 | — | — | 7:00 | — | — | 7:00 | — | — | 7:00 | — | — | 6:59 | — | — | 6:58 | — | — | 6:57 | — | |
mm | — | — | — | — | — | 2 | 18 | 7 | 10 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 27 | 25 | 26 | 26 | 26 | 25 | 26 | 26 | 26 | 26 | 25 | 25 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 |
Feels °C | 22 | 24 | 22 | 21 | 21 | 22 | 21 | 26 | 28 | 25 | 25 | 24 | 23 | 24 | 24 | 25 | 25 | 25 | 26 | 26 | 25 |
Swell 1 Height (m) Direction Period (s) | S 14 | S 14 | S 14 | S 13 | S 13 | S 14 | SSE 8 | ENE 9 | SSE 7 | S 14 | S 14 | S 13 | S 13 | S 13 | ENE 8 | SW 16 | ENE 8 | E 8 | E 8 | SSW 17 | E 8 |
411 | 411 | 306 | 222 | 168 | 179 | 108 | 858 | 58 | 264 | 260 | 222 | 165 | 162 | 151 | 129 | 172 | 104 | 93 | 200 | 103 | |
Swell 2 Height (m) Direction Period (s) | W 12 | E 11 | W 11 | W 11 | W 13 | S 18 | S 13 | SSE 8 | S 14 | S 6 | S 5 | W 11 | SW 17 | SW 18 | S 13 | S 12 | S 12 | SW 16 | NE 7 | SSW 11 | SW 16 |
11 | 62 | 9 | 9 | 30 | 101 | 157 | 210 | 246 | 24 | 8 | 10 | 74 | 79 | 116 | 44 | 45 | 129 | 47 | 23 | 274 | |
Swell 3 Height (m) Direction Period (s) | SW 18 | W 12 | SW 17 | SW 17 | S 19 | W 13 | S 16 | S 13 | S 16 | SW 18 | SSW 19 | SSW 19 | E 9 | W 13 | SW 18 | W 12 | SSW 16 | S 12 | SSW 18 | SSE 9 | S 15 |
12 | 11 | 12 | 12 | 65 | 30 | 132 | 165 | 81 | 50 | 37 | 37 | 15 | 31 | 79 | 25 | 100 | 45 | 207 | 8 | 38 | |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 9 | E 10 | ENE 9 | SSE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | — | ENE 8 | ENE 7 | NE 7 | — | ENE 7 | NE 7 |
494 | 540 | 1081 | 1452 | 2232 | 3457 | 1781 | 389 | 463 | 310 | 237 | 203 | 147 | 163 | — | 140 | 158 | 50 | — | 135 | 47 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 39 | 127 | 201 | 157 | 127 | 201 | 129 | 127 | 0 | 31 | 30 | 2 | 30 | 30 | 1 | 30 | 1 | 1 | 1 | 1 | 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.











