Surf Forecasts:
Rabbit/Manana Island surf forecast from 16 Aug 2026:
- Best quality surf: Sunday 16 Aug, 11AM (local time) - 13ft (4.0m), 9s period, E swell with cross-offshore winds.
- Most powerful swell: Sunday 16 Aug, 11AM (local time) - 13ft (4.0m), 9s period, E swell with 2,346 kJ wave energy.
- Next surfable swell (1★+): Sunday 16 Aug, 11AM (local time) - 13ft (4.0m), 9s period with E 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 Sunday (Aug 16) at 11AM. The primary swell is predicted to be 4.0m and 9s 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 4.0m 9s and forecast to arrive on Sunday (Aug 16) 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 0.8m 8s period and expected on Sunday (Aug 16) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Sun 16th Aug) | 13ft (4.0m) 9s |
| Best Surf | 11AM (Sun 16th Aug) | 13ft (4.0m) 9s |
| Most Powerful | 11AM (Sun 16th Aug) | 13ft (4.0m) 9s |
Table - best surf conditions forecast for Rabbit/Manana Island over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a good look at the local surf picture.
The swell is gonna be pumping for a short window, but the wind is going to be the story for most of this 16-day stretch. We’ve got a big slug of easterly energy forecast to hit Rabbit/Manana Island right out of the gate Sunday morning. The combined energy is reading a hefty 2353 (moderate to strong wave energy), with a 13ft swell out of the east, period around 9 seconds. That’s a big, powerful wave. For an exposed spot like this, with the optimum direction coming from the NNE, that east swell is a bit angled, but the size will still make for a wild ride. Water temp is sitting at a balmy 80° and is about average for this time of year. Problem is, this is a serious, heavy wave at that size – well over 8ft, so this is for experts only.
Now, the bad news is the wind. That Sunday morning has a strong breeze out of the ESE at 25 mph, making it cross-offshore. It’ll be clean, but the raw power of that swell is the main event. By Sunday afternoon, the wind drops to 15 mph, but the swell drops too, to 8ft, and the conditions get flagged as marginal. That’s our one and only real shot.
From Sunday afternoon onwards, it’s a tough run. The wind swings to the ENE and stays there for days, blowing cross to cross-onshore at 15-25 mph. The surf quality gets the full red light "poor surf conditions" stamp for nearly every session. We’re looking at fresh breezes, lumpy cross-chop, and a 0/10 score for most of the forecast. The swell stays in the 3ft to 6ft range for days after the initial pulse, but it’s just not clean. The week of the 24th through the 29th sees the swell build back up, hitting 8ft to 10ft by the 29th and 30th, with combined energy hitting four-digit numbers like 1085 (strong wave energy) and 1232 (strong). But again, it’s all under a constant ENE cross-onshore breeze. The setup looks like it would be a lot more fun for kite surfing than paddle surfing during this period.
There’s a tiny glimmer on the very last day, Monday 31st, with a pulse of long-period groundswell (13 seconds) from the east, but it's only 4ft and the wind is still cross-onshore. The potential is there, but the timing isn't.
The Standout: Sunday morning, August 16th, at Rabbit/Manana Island. That’s your window. A big, powerful east swell – 13ft – with an offshore wind component. It’s a short window, and it's big and dangerous, but for the crew who can handle it, that’s the only real pulse of clean, heavy surf in this whole outlook.
Rusty.
Short Range ForecastHeavy rain (total 56mm), heaviest during Sun morning. Warm (max 27°C on Sun night, min 25°C on Sun morning). Winds decreasing (strong winds from the ESE on Sun morning, light winds from the E by Sun night). | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Fri morning, min 24°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | |||||||||||||||
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 9 | E 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 6 | ENE 6 | ENE 5 | E 8 | E 8 | E 8 | E 8 | E 8 | ENE 7 | NE 7 | NE 7 | ENE 7 | ENE 7 | ENE 7 | E 6 |
Wave Graph | |||||||||||||||||||||
2346 | 957 | 484 | 337 | 252 | 178 | 127 | 126 | 78 | 138 | 84 | 82 | 57 | 55 | 108 | 73 | 82 | 81 | 99 | 118 | 243 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross | cross | cross-on | cross-on | cross | cross-on | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross-on | cross |
High Tide | 4:40PM0.52m | 6:27AM0.44m | 4:40PM0.47m | 8:02AM0.45m | 4:17PM0.43m | 10:23AM0.47m | 11:48AM0.51m | 12:32PM0.55m | 1:04PM0.58m | 10:27PM0.27m | |||||||||||
Low Tide | 10:41AM0.19m | 11:25PM0.08m | 11:25AM0.27m | 11:52PM0.07m | 12:27PM0.33m | 00:26AM0.08m | 1:15AM0.09m | 2:41AM0.09m | 4:16AM0.08m | 9:18PM0.23m | |||||||||||
6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | |
— | 7:00 | — | — | 6:59 | — | — | 6:58 | — | — | 6:57 | — | — | 6:57 | — | — | 6:55 | — | — | 6:54 | — | |
mm | 42 | 7 | 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 27 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 27 | 26 |
Feels °C | 24 | 26 | 28 | 24 | 24 | 23 | 23 | 23 | 24 | 24 | 24 | 25 | 26 | 25 | 25 | 29 | 28 | 27 | 27 | 27 | 25 |
Swell 1 Height (m) Direction Period (s) | S 16 | SSE 8 | ENE 8 | S 14 | S 14 | S 13 | S 13 | S 13 | S 13 | NNE 7 | E 8 | NE 6 | E 8 | NE 7 | ENE 7 | NE 7 | NE 7 | E 8 | ESE 8 | SSW 16 | SSE 12 |
83 | 90 | 484 | 103 | 65 | 55 | 54 | 30 | 29 | 38 | 84 | 46 | 57 | 46 | 108 | 73 | 82 | 12 | 24 | 25 | 30 | |
Swell 2 Height (m) Direction Period (s) | S 12 | S 16 | SSE 7 | SSE 6 | SSE 6 | E 9 | NE 8 | SW 18 | NNE 7 | S 12 | NE 6 | E 8 | NE 6 | E 8 | SSW 17 | E 8 | ESE 8 | SSW 16 | SSE 15 | S 12 | SSW 16 |
11 | 46 | 29 | 13 | 3 | 15 | 10 | 12 | 5 | 11 | 40 | 82 | 40 | 55 | 27 | 12 | 14 | 50 | 42 | 12 | 24 | |
Swell 3 Height (m) Direction Period (s) | NNW 8 | S 13 | S 13 | SW 6 | SW 6 | N 7 | SW 17 | W 13 | SW 18 | SW 16 | S 12 | S 12 | SSW 18 | SSW 18 | S 15 | SSW 17 | SSW 16 | S 13 | SSW 16 | SSE 15 | SSE 15 |
7 | 30 | 56 | 1 | 1 | 1 | 11 | 3 | 12 | 10 | 11 | 11 | 31 | 30 | 17 | 29 | 25 | 14 | 26 | 21 | 21 | |
Wind waves Height (m) Direction Period (s) | E 9 | E 8 | — | ENE 7 | ENE 7 | ENE 7 | ENE 6 | ENE 6 | ENE 5 | E 8 | — | — | — | — | — | — | E 3 | ENE 7 | ENE 7 | ENE 7 | E 6 |
2346 | 957 | — | 337 | 252 | 178 | 127 | 126 | 78 | 138 | — | — | — | — | — | — | 1 | 81 | 99 | 118 | 243 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 142 | 43 | 9 | 48 | 48 | 21 | 48 | 20 | 19 | 48 | 19 | 19 | 18 | 18 | 9 | 9 | 17 | 9 | 48 | 48 | 19 |
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.











