Surf Forecasts:
Anaehoomalu Bay_A-Bay surf forecast from 10 Aug 2026:
- Most powerful swell: Monday 17 Aug, 2AM (local time) - 4.5ft (1.3m), 5s period, SSW swell with 73 kJ wave energy.
Best Forecast Surf Conditions for Anaehoomalu Bay_A-Bay this week:
The most powerful waves expected at Anaehoomalu Bay_A-Bay in the next 16 days are 1.3m 5s and forecast to arrive on Monday (Aug 17) at 2AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 13s period and expected on Sunday (Aug 16) at 2PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2AM (Mon 17th Aug) | 4.5ft (1.3m) 5s |
Table - best surf conditions forecast for Anaehoomalu Bay_A-Bay over the next 16 days.
The Lowdown
Alright crew, Rusty here again, looking at the same picture for A-Bay but in feet. Honestly, it’s a grim outlook. The whole 16-day window, from August 10th through the 25th, is a total flat spell. There’s just nothing to get excited about.
We’re stuck with tiny waves, mostly 0.7ft to 1ft coming from the west and west-northwest. The combined swell energy is barely a whisper, mostly in the low double digits (like 21, 22, 33) or reading zero. On the morning of August 17th, there’s a bump to 5ft from the southwest, but the period is a lousy 6 seconds – that’s just wind chop, not a real swell. The energy gets up to 198 (moderate), but a cross-onshore wind chops it all up.
For Anaehoomalu Bay (A-Bay), a reef and point, you need some proper groundswell, but it’s just not there. Every single day is marked as poor surf conditions. The wind is a mixed bag – cross, cross-on, onshore – and while we get a few glassy windows (like the afternoon of August 10th and the 12th), there’s absolutely no swell to push through. When the wind is offshore, the waves are flat.
This is honestly more of a kiteboarding scene than a surf report. The water feels about normal for this time of year. It’s a bleak run, and for this spot, that’s just how it goes sometimes. Stay hopeful, but don’t plan your session around it.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Sun night. Warm (max 29°C on Mon morning, min 25°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 29°C on Thu afternoon, min 25°C on Thu night). Wind will be generally light. | ||||||||||||||||||
Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | ||||||||||||||
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) | W 12 | W 11 | W 11 | W 10 | SSW 14 | W 10 | W 11 | W 11 | WNW 13 | SSW 16 | WNW 12 | W 12 | W 12 | SSW 14 | W 12 | W 12 | WNW 11 | W 11 | WNW 13 |
Wave Graph  | |||||||||||||||||||
 kJ | 23 | 21 | 21 | 18 | 0 | 8 | 23 | 22 | 33 | 0 | 28 | 25 | 25 | 0 | 25 | 11 | 24 | 22 | 34 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | glassy | cross-off | on | glassy | cross-off | cross-on | glassy | cross | cross | cross | cross-off | cross | cross | cross-off | cross | cross | cross-off |
High Tide | 1:45AM0.32m | 2:38PM0.90m | 2:37AM0.36m | 3:19PM0.90m | 3:24AM0.42m | 3:56PM0.88m | 4:09AM0.48m | 4:30PM0.83m | 4:54AM0.53m | 5:01PM0.75m | 5:39AM0.57m | 5:30PM0.66m | |||||||
Low Tide | 9:17PM0.15m | 7:11AM0.03m | 9:46PM0.12m | 8:06AM0.02m | 10:15PM0.10m | 8:56AM0.02m | 10:44PM0.08m | 9:44AM0.06m | 11:11PM0.08m | 10:32AM0.11m | 11:36PM0.08m | 11:20AM0.18m | 00:02AM0.08m | ||||||
 |  |  |  | | |  | | | | | | | | | | |  |  | |
 | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — |
 | 6:55 | — | 6:54 | — | — | 6:53 | — | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — |
mm | 1 | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 29 | 29 | 27 | 28 | 28 | 26 | 28 | 28 | 26 | 28 | 29 | 26 | 27 | 28 | 26 | 28 | 29 | 27 |
Feels °C | 32 | 32 | 33 | 31 | 30 | 31 | 29 | 30 | 30 | 29 | 28 | 29 | 27 | 28 | 29 | 28 | 30 | 29 | 28 |
Swell 1 Height (m) Direction Period (s) | NE 5 | NE 6 | NE 6 | NE 5 | NE 5 | NE 6 | SSW 13 | NNE 5 | NE 6 | NE 5 | SSW 16 | NNE 6 | SSW 14 | NNE 6 | NNE 6 | SSW 14 | WNW 11 | SSW 13 | E 12 |
| kJ | 28 | 31 | 40 | 30 | 12 | 37 | 35 | 15 | 46 | 23 | 48 | 55 | 70 | 51 | 61 | 36 | 24 | 34 | 104 |
Swell 2 Height (m) Direction Period (s) | W 12 | W 11 | SSW 15 | W 10 | NE 6 | SSW 14 | W 11 | SSW 13 | SSW 13 | SSW 13 | WNW 12 | SSW 15 | W 12 | NE 8 | SSW 14 | W 12 | SSW 13 | W 11 | WNW 13 |
| kJ | 23 | 21 | 47 | 18 | 14 | 40 | 23 | 32 | 32 | 32 | 28 | 44 | 25 | 16 | 40 | 11 | 35 | 22 | 34 |
Swell 3 Height (m) Direction Period (s) | SSW 12 | NE 8 | W 11 | SSW 15 | SSW 14 | W 10 | W 14 | W 11 | WNW 13 | SSW 16 | SSW 12 | W 12 | S 18 | SSW 14 | W 12 | W 15 | W 15 | E 11 | SSW 13 |
| kJ | 14 | 10 | 21 | 23 | 41 | 8 | 15 | 22 | 33 | 51 | 28 | 25 | 6 | 69 | 25 | 4 | 4 | 23 | 17 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | NNE 5 | — | — | — | NE 6 | — | NNE 6 | — | — | NE 8 | NE 8 | NNE 9 | NNE 8 |
| kJ | — | — | — | — | — | — | 15 | — | — | — | 44 | — | 53 | — | — | 176 | 158 | 247 | 326 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 34 | 96 | 34 | 30 | 91 | 50 | 30 | 96 | 96 | 34 | 30 | 30 | 33 | 30 | 21 | 21 | 94 | 94 | 34 |
Best forecast wave conditions in Big Island | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
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Information about the Anaehoomalu Bay_A-Bay Surf forecast
The above surf forecast table for Anaehoomalu Bay_A-Bay provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Anaehoomalu Bay_A-Bay can be found by selecting the local surf guide option on the grey menu. Our Anaehoomalu Bay_A-Bay 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 (Anaehoomalu Bay_A-Bay) 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 Anaehoomalu Bay_A-Bay 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.
Anaehoomalu Bay_A-Bay is 87 km (54 miles) from Hilo. If you plan a vacation in Big Island, look for hotels and other accommodation in Hilo. Hilo has rooms for a wide range of budgets as well as car hire and transport links.
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