Surf Forecasts:
Rabbit/Manana Island surf forecast from 9 Aug 2026:
- Most powerful swell: Saturday 15 Aug, 11PM (local time) - 10ft (3.0m), 13s period, ENE swell with 2,906 kJ wave energy.
Best Forecast Surf Conditions for Rabbit/Manana Island this week:
The most powerful waves expected at Rabbit/Manana Island in the next 16 days are 3.0m 13s and forecast to arrive on Saturday (Aug 15) at 11PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 16s period and expected on Thursday (Aug 13) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11PM (Sat 15th Aug) | 10ft (3.0m) 13s |
Table - best surf conditions forecast for Rabbit/Manana Island over the next 16 days.
The Lowdown
Alright, Rusty here, checking the surf for the Oahu south shore. The first part of this forecast is pretty grim, so don't get your gear wet yet.
From Sunday the 9th through Saturday the 15th, it's a bust. The wind is hammering from the ENE and NE at 19 to 22 mph, sometimes 25 mph, and it's cross-onshore the whole time. The swell is there, running 4 to 8 ft, but it's all short-period, 6 to 8 seconds. The wind has it all chopped up and lumpy. The wave energy is moderate, but it's useless for surfing. Just skip it.
A big pulse comes in on Saturday the 15th, with heights hitting 8 to 8 ft, and the period jumps to 11 seconds, so it's groundswell. The energy is strong, but the wind is still 22 to 25 mph and cross-onshore. It's a mess. Sunday the 16th sees the swell peak at 10 ft with a 12 to 13-second period, and the energy is very strong. The wind finally goes offshore from the NNE and N, but the wave comment says "poor surf conditions," so don't get excited.
The clear winner is Monday the 17th. That's your day. We get an 8 ft swell from the NE with a 10-second period, and the wind shifts to a light to moderate offshore from the SW, just 9 to 12 mph. The wave comment says "excellent surf conditions for experienced surfers." The energy is still strong. This is the best of the run. The break is Rabbit/Manana Island, an exposed spot, and the optimum swell is from the NNE. The swell is from the NE, which is close enough. At 8 ft, this is for experienced surfers only. The water is 80°, which is about average for this time of year. The wind is clean, so expect some proper waves. Crowds are possible, so plan accordingly.
After Monday, it fades out fast. Tuesday the 18th has a tiny 3 ft swell with clean offshore wind, but it's too small. The rest of the second week is back to the same cross-onshore wind and weak, small swell. Nothing worth chasing.
So here's the call: mark your calendar for Monday the 17th. That's the only real standout. The rest of the time, the wind just ruins it.
- Rusty
Short Range ForecastMostly dry. Warm (max 26°C on Mon morning, min 25°C on Sun morning). Mainly fresh winds. | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Wed night, min 25°C on Wed morning). Mainly strong winds. | ||||||||||||||||||||
Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | |||||||||||||||
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 7 | ENE 7 | ENE 7 | E 8 | ENE 8 | E 7 | E 7 | ENE 7 | E 6 | ENE 6 | ENE 6 | E 6 | ENE 6 | ENE 6 | ENE 7 | ENE 7 | ENE 8 | ENE 9 | ENE 11 | ENE 11 | ENE 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 278 | 292 | 301 | 258 | 226 | 238 | 225 | 181 | 176 | 117 | 160 | 182 | 170 | 201 | 285 | 349 | 398 | 651 | 1207 | 1503 | 2906 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross-on | cross-on | cross | cross | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 1:40PM0.72m | 11:41PM0.30m | 2:17PM0.74m | 00:48AM0.34m | 2:50PM0.74m | 1:43AM0.37m | 3:21PM0.72m | 2:36AM0.40m | 3:49PM0.69m | 3:28AM0.42m | 4:12PM0.63m | 4:22AM0.43m | 4:30PM0.58m | ||||||||
Low Tide | 8:45PM0.24m | 6:24AM-0.09m | 8:55PM0.22m | 7:12AM-0.10m | 9:16PM0.20m | 7:57AM-0.08m | 9:41PM0.17m | 8:39AM-0.03m | 10:07PM0.14m | 9:20AM0.03m | 10:33PM0.12m | 10:00AM0.11m | 10:59PM0.09m | ||||||||
 | |  |  | |  | | | | | | | | | | | | | | | | |
 | 6:05 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — |
 | — | 7:05 | — | — | 7:04 | — | — | 7:02 | — | — | 7:02 | — | — | 7:01 | — | — | 7:00 | — | — | 7:00 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 26 | 26 | 26 | 25 | 25 | 25 | 26 | 26 | 26 | 25 |
Feels °C | 24 | 23 | 24 | 26 | 24 | 25 | 25 | 24 | 22 | 23 | 22 | 24 | 24 | 23 | 22 | 22 | 22 | 24 | 24 | 23 | 22 |
Swell 1 Height (m) Direction Period (s) | SSW 13 | NNW 11 | NNW 10 | NNW 9 | NNW 8 | NNW 8 | SSW 15 | SSW 14 | SSW 14 | E 8 | S 18 | S 16 | S 16 | S 15 | S 15 | S 14 | S 14 | S 14 | S 13 | ESE 14 | ENE 13 |
| kJ | 17 | 23 | 33 | 27 | 24 | 13 | 42 | 40 | 62 | 43 | 152 | 257 | 183 | 161 | 159 | 107 | 106 | 96 | 87 | 317 | 2906 |
Swell 2 Height (m) Direction Period (s) | N 12 | S 18 | NE 8 | SSW 16 | SSW 15 | SSW 15 | NNW 8 | NNW 7 | S 20 | S 18 | SSW 13 | NNW 7 | NNW 9 | NNW 8 | NNW 7 | NNW 7 | NW 7 | NNW 9 | NNW 8 | S 13 | S 14 |
| kJ | 11 | 24 | 11 | 49 | 45 | 44 | 11 | 5 | 119 | 155 | 55 | 5 | 7 | 6 | 5 | 5 | 2 | 8 | 7 | 54 | 61 |
Swell 3 Height (m) Direction Period (s) | SSE 10 | SSW 12 | S 16 | NE 8 | NE 8 | SSE 9 | S 11 | SSE 9 | NNW 7 | SSW 13 | NNW 7 | S 9 | S 9 | S 9 | S 18 | E 14 | E 15 | S 17 | E 16 | NNW 8 | NNW 7 |
| kJ | 9 | 15 | 20 | 11 | 11 | 8 | 10 | 8 | 5 | 55 | 5 | 2 | 2 | 2 | 6 | 4 | 4 | 6 | 21 | 6 | 5 |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 7 | ENE 7 | E 8 | ENE 8 | E 7 | E 7 | ENE 7 | E 6 | ENE 6 | ENE 6 | E 6 | ENE 6 | ENE 6 | ENE 7 | ENE 7 | ENE 8 | ENE 9 | ENE 11 | ENE 11 | — |
| kJ | 278 | 292 | 301 | 258 | 226 | 238 | 225 | 181 | 176 | 117 | 160 | 182 | 170 | 201 | 285 | 349 | 398 | 651 | 1207 | 1503 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 48 | 48 | 48 | 48 | 48 | 48 | 48 | 49 | 48 | 48 | 57 | 48 | 49 | 111 | 48 | 55 | 111 | 48 | 111 | 152 | 17 |
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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