Surf Forecasts:
Anaehoomalu Bay_A-Bay surf forecast from 26 Aug 2026:
- Most powerful swell: Sunday 30 Aug, 5AM (local time) - 1ft (0.3m), 16s period, SW swell with 43 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 0.3m 16s and forecast to arrive on Sunday (Aug 30) 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 0.9m 6s period and expected on Tuesday (Aug 25) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5AM (Sun 30th Aug) | 1ft (0.3m) 16s |
Table - best surf conditions forecast for Anaehoomalu Bay_A-Bay over the next 16 days.
The Lowdown
Alright, this is Rusty, and I’m gonna level with you – this 16-day run for Anaehoomalu Bay (A-Bay) is a pretty quiet affair. You’re looking at a whole lot of nothing to start. The first real chance of any waves worth talking about doesn’t roll in until Monday, September 7th, and even then, it’s small.
From now through the end of August, it’s flat. Not a ripple. The ocean is just taking a nap. Glassy afternoons are nice for a float, but there’s zero push. The first days of September keep that trend going – little bumps of swell, but nothing to get excited about.
Come Monday, September 7th, around midday, we finally get a pulse. A small swell from the west, about 2 ft, with a 12-second period. The wave energy is moderate, sitting at 73 (combined energy of all swells directed here). That longer period means the waves will have some shape, even at that size. The wind goes glassy, which is a big deal. A-Bay is a reef and point, and the optimum swell direction is from the west-northwest. That west swell will wrap in nicely around the point. This is the best shot you’ve got in this whole outlook. It’s in the second week, so it’s less certain, but it’s the one to have on your radar.
Tuesday, September 8th, in the afternoon, also looks promising. Same swell size, about 2 ft from the west, but the period stretches to 13 seconds. The wind is dead calm – 0 mph – so the surface will be flawless. The energy is moderate at 86, the highest we see in this whole stretch. It’s small, but clean and with that long-period groundswell, a reef point like A-Bay can turn it into some nice, peeling lines.
One thing to note: these long-period swells (over 11 seconds) are groundswells. They can make beach breaks close out, but on a point or reef, they’re pure magic. A-Bay is perfect for it. Crowds here are “sometimes,” so you might see a few other heads, but it won’t be packed.
So, to put it plainly: you’ve got a full week of flatness, then a couple of tiny but clean windows starting September 7th. The standouts are Monday afternoon the 7th and Tuesday afternoon the 8th, with glassy conditions and a clean west groundswell. It’s not going to be a big swell, but for this stretch of quiet, it’s your best bet.
Rusty, signing off.
Short Range ForecastMostly dry. Warm (max 29°C on Tue morning, min 25°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 28°C on Sat morning, min 25°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | |||||||||||||||
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) | NE 6 | NE 6 | NNE 5 | W 11 | NE 5 | W 10 | SSW 16 | N 8 | SSW 15 | SSW 14 | W 10 | NNE 5 | SW 18 | NE 6 | NE 6 | W 12 | NNE 7 | SW 15 | SW 15 | W 12 | W 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 0 | 0 | 0 | 9 | 0 | 8 | 0 | 5 | 0 | 0 | 8 | 15 | 12 | 0 | 0 | 11 | 0 | 36 | 33 | 11 | 11 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | glassy | cross-off | cross | cross | cross-off | cross-on | glassy | cross-off | cross-on | cross | glassy | cross-on | glassy | cross-off | cross-on | glassy | cross-off | cross | cross | cross-off |
High Tide | 2:42PM0.78m | 2:44AM0.41m | 3:11PM0.79m | 3:18AM0.46m | 3:38PM0.77m | 3:53AM0.51m | 4:04PM0.74m | 4:30AM0.57m | 4:30PM0.69m | 5:09AM0.61m | 4:57PM0.62m | 5:51AM0.65m | 5:23PM0.55m | ||||||||
Low Tide | 9:36PM0.14m | 8:14AM0.08m | 9:55PM0.12m | 8:54AM0.08m | 10:14PM0.11m | 9:34AM0.10m | 10:34PM0.09m | 10:16AM0.14m | 10:56PM0.08m | 11:01AM0.18m | 11:19PM0.07m | 11:52AM0.23m | 11:45PM0.07m | ||||||||
 | |  | | | | | | | | | | |  | | | | | | | | |
 | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — |
 | — | 6:44 | — | — | 6:44 | — | — | 6:43 | — | — | 6:42 | — | — | 6:40 | — | — | 6:39 | — | — | 6:38 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 29 | 29 | 26 | 27 | 27 | 26 | 27 | 27 | 26 | 27 | 27 | 26 | 28 | 27 | 26 | 28 | 28 | 26 | 28 | 28 | 26 |
Feels °C | 31 | 31 | 29 | 28 | 29 | 28 | 29 | 30 | 30 | 30 | 30 | 28 | 30 | 30 | 30 | 30 | 31 | 30 | 30 | 31 | 27 |
Swell 1 Height (m) Direction Period (s) | NE 6 | NE 6 | NNE 5 | SSW 15 | NE 5 | SSW 13 | NNE 5 | NE 5 | NNE 5 | SSW 14 | NNE 6 | SSW 13 | NE 6 | NE 6 | NE 6 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 8 |
| kJ | 36 | 51 | 17 | 21 | 28 | 17 | 17 | 28 | 9 | 39 | 39 | 34 | 38 | 54 | 39 | 41 | 68 | 62 | 61 | 81 | 103 |
Swell 2 Height (m) Direction Period (s) | SSW 12 | SSW 12 | SSW 14 | W 11 | SSW 17 | S 16 | SSW 16 | SSW 15 | NE 4 | NNE 7 | SSW 13 | NE 7 | SSW 13 | SSW 12 | SSW 17 | SSW 16 | SSW 15 | SW 15 | SW 15 | SSW 14 | SSW 14 |
| kJ | 29 | 14 | 21 | 9 | 27 | 21 | 24 | 44 | 5 | 9 | 18 | 7 | 16 | 15 | 27 | 25 | 22 | 36 | 33 | 20 | 20 |
Swell 3 Height (m) Direction Period (s) | SSW 16 | SSW 16 | SSW 12 | SSW 11 | SSW 14 | W 10 | SSW 12 | N 8 | SSW 15 | ENE 6 | W 10 | W 10 | SW 18 | SSW 17 | SSW 12 | W 12 | S 12 | W 11 | W 11 | W 12 | W 12 |
| kJ | 25 | 24 | 14 | 12 | 18 | 8 | 15 | 5 | 42 | 4 | 8 | 8 | 12 | 28 | 14 | 11 | 11 | 9 | 9 | 11 | 11 |
Wind waves Height (m) Direction Period (s) | — | — | — | NNE 5 | — | NNE 5 | — | — | — | NNE 5 | — | NNE 5 | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | 17 | — | 17 | — | — | — | 15 | — | 15 | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 30 | 96 | 30 | 96 | 96 | 30 | 91 | 91 | 30 | 96 | 30 | 86 | 91 | 91 | 21 | 91 | 91 | 34 | 21 | 96 | 21 |
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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