Surf Forecasts:
Rabbit/Manana Island surf forecast from 19 Aug 2026:
- Best quality surf: Friday 21 Aug, 8AM (local time) - 3.5ft (1.0m), 7s period, NE swell with cross-offshore winds.
- Most powerful swell: Monday 24 Aug, 11PM (local time) - 8ft (2.4m), 8s period, ENE swell with 627 kJ wave energy.
- Next surfable swell (1★+): Friday 21 Aug, 8AM (local time) - 3.5ft (1.0m), 7s period with NE swell.
Best Forecast Surf Conditions for Rabbit/Manana Island this week:
The surf forecast for Rabbit/Manana Island over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Aug 21) at 8AM. The primary swell is predicted to be 1.0m and 7s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Rabbit/Manana Island in the next 16 days are 2.4m 8s and forecast to arrive on Monday (Aug 24) at 11PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 13s period and expected on Tuesday (Aug 18) at 8PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Fri 21st Aug) | 3.5ft (1.0m) 7s |
| Best Surf | 8AM (Fri 21st Aug) | 3.5ft (1.0m) 7s |
| Most Powerful | 11PM (Mon 24th Aug) | 8ft (2.4m) 8s |
Table - best surf conditions forecast for Rabbit/Manana Island over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what the ocean's got cookin' for us.
Alright, I gotta be straight with you. The next two weeks are lookin' pretty grim for a decent paddle. We’ve got swell, no doubt about it, but the wind gods are just not playing ball. The whole 16-day run is a write-off for anything clean. From Tuesday afternoon, August 18th, right through to the end of the month, every single session is tagged as poor surf conditions. The wind is a constant problem, mostly cross-onshore or cross-shore from the NE and ENE, blowing at 15 mph to 25 mph, just chopping everything to pieces.
The one spot we’ve got on the radar is Rabbit/Manana Island. It’s an exposed spot that picks up swell from the NNE, but the forecast has it coming in from the ENE and E instead. The swell energy starts weak, around 160, and builds to a monster 1134 by Saturday, August 29th, with heights hitting 8 ft. That’s a lot of power, but it's all wind-affected junk. The period stays short, between 6 and 9 seconds, so it's just messy, lumpy wind-slop. Because the swell gets well over 8 ft for the experts, and the wind is so strong, this setup honestly looks more interesting for kite surfing than paddle surfing.
The water temp is about average for the time of year at 80°.
We get a tiny glimmer of hope right at the end on Wednesday, September 2nd. The afternoon session shows "marginal" surf with a gentle cross-onshore breeze at 9 mph, and a long-period swell of 10 seconds starting to show up. The swell height is 5 ft with moderate energy (512). It’s still not good, but it’s the closest thing to a "maybe" we get in the whole run. The rest of it? A long, frustrating stretch of onshore slop. Not our time.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Thu afternoon, min 24°C on Tue night). Winds decreasing (fresh winds from the ENE on Tue afternoon, light winds from the E by Fri morning). | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Fri afternoon, min 25°C on Sat night). Winds increasing (light winds from the E on Fri afternoon, strong winds from the ENE by Sun morning). | |||||||||||||||||||
Tue 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | ||||||||||||||
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 7 | ENE 7 | ENE 7 | E 8 | E 8 | E 8 | E 8 | ENE 7 | NE 7 | NE 7 | ENE 7 | ENE 6 | ENE 6 | E 7 | E 7 | ENE 6 | ENE 6 | E 6 | ENE 7 | ENE 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 160 | 172 | 121 | 84 | 82 | 57 | 54 | 69 | 93 | 106 | 149 | 176 | 245 | 293 | 293 | 253 | 235 | 345 | 448 | 592 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross |
High Tide | 4:17PM0.43m | 10:23AM0.47m | 11:48AM0.51m | 12:32PM0.55m | 1:04PM0.58m | 10:27PM0.27m | 1:31PM0.61m | 11:46PM0.30m | 1:55PM0.63m | 00:27AM0.33m | ||||||||||
Low Tide | 00:26AM0.08m | 1:15AM0.09m | 2:41AM0.09m | 4:16AM0.08m | 9:18PM0.23m | 5:19AM0.05m | 8:24PM0.22m | 6:03AM0.02m | 8:21PM0.21m | |||||||||||
 |  |  | | | | |  | | | | | | | | | | | | | |
 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — |
 | 6:58 | — | — | 6:57 | — | — | 6:57 | — | — | 6:55 | — | — | 6:54 | — | — | 6:53 | — | — | 6:52 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
Feels °C | 22 | 23 | 25 | 25 | 25 | 26 | 27 | 28 | 29 | 29 | 28 | 26 | 24 | 23 | 23 | 22 | 23 | 23 | 22 | 23 |
Swell 1 Height (m) Direction Period (s) | S 13 | S 13 | S 12 | NE 6 | E 8 | NE 6 | NE 7 | ENE 7 | NE 7 | E 8 | SSW 16 | SSE 15 | SSW 16 | WNW 12 | SSE 13 | NW 11 | ESE 9 | NW 12 | NW 12 | NW 11 |
| kJ | 30 | 29 | 11 | 39 | 82 | 40 | 46 | 69 | 93 | 6 | 50 | 42 | 25 | 29 | 35 | 19 | 68 | 35 | 34 | 19 |
Swell 2 Height (m) Direction Period (s) | SW 18 | NNE 7 | SSE 9 | S 12 | NE 6 | E 8 | E 8 | NNE 7 | SSW 17 | SSW 16 | ESE 8 | SSW 16 | S 12 | SSE 14 | NW 11 | SSE 13 | NW 11 | SSE 13 | SSW 13 | SSW 13 |
| kJ | 12 | 5 | 8 | 11 | 46 | 57 | 54 | 46 | 29 | 25 | 14 | 26 | 12 | 41 | 33 | 18 | 31 | 33 | 18 | 16 |
Swell 3 Height (m) Direction Period (s) | W 13 | SW 18 | SW 16 | SW 16 | S 12 | SSW 18 | SSW 18 | SSW 17 | S 15 | SSE 9 | S 13 | NW 16 | WNW 14 | SSW 16 | SSW 16 | SSW 15 | SSE 13 | SSW 14 | SSE 12 | SSE 12 |
| kJ | 3 | 12 | 10 | 11 | 11 | 31 | 30 | 27 | 17 | 7 | 14 | 9 | 18 | 24 | 24 | 22 | 34 | 19 | 15 | 14 |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 7 | ENE 7 | E 8 | — | — | — | — | — | NE 7 | ENE 7 | ENE 6 | ENE 6 | E 7 | E 7 | ENE 6 | ENE 6 | E 6 | ENE 7 | ENE 8 |
| kJ | 160 | 172 | 121 | 84 | — | — | — | — | — | 106 | 149 | 176 | 245 | 293 | 293 | 253 | 235 | 345 | 448 | 592 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 19 | 19 | 19 | 19 | 19 | 19 | 9 | 9 | 9 | 17 | 9 | 49 | 54 | 55 | 59 | 59 | 48 | 57 | 55 | 49 |
Best forecast wave conditions in Oahu | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
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Information about the Rabbit/Manana Island Surf forecast
The above surf forecast table for Rabbit/Manana Island provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Rabbit/Manana Island can be found by selecting the local surf guide option on the grey menu. Our Rabbit/Manana Island 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 (Rabbit/Manana Island) 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 Rabbit/Manana Island 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.
Rabbit/Manana Island is 11 km (7 miles) from the city of Kailua. If you plan a vacation in Oahu, look for hotels and other accommodation in Kailua. Kailua has rooms for a wide range of budgets as well as car hire and transport links.
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