
Surf Forecasts:
Anaehoomalu Bay_A-Bay surf forecast from 8 Aug 2026:
- Most powerful swell: Wednesday 12 Aug, 5PM (local time) - 1ft (0.3m), 13s period, WNW swell with 33 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 13s and forecast to arrive on Wednesday (Aug 12) at 5PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 7s period and expected on Friday (Aug 14) at 8PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5PM (Wed 12th Aug) | 1ft (0.3m) 13s |
Table - best surf conditions forecast for Anaehoomalu Bay_A-Bay over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s cooking for the next couple of weeks.
Right off the bat, I gotta be straight with you: the surf is flat. Dead flat. For the first week and a half, from Saturday the 8th right through to the early part of the week starting the 18th, we’ve got nothing but poor surf conditions and zero scores. That’s a long stretch of quiet. The combined energy readings are all in the weak zone, with numbers like 0, 8, 21, 33, never even cracking three digits. It’s pretty much a write-off for paddle surfing. The wind is light, but without any swell to work with, it doesn’t matter.
The first real glimmer of hope arrives on Tuesday afternoon, the 18th of August. The swell finally starts to show, with a little 1ft groundswell rolling in from the WNW. The period is 13 seconds, so it’s got some long-period energy, and the combined energy bumps up to 69 (still weak). The wind goes glassy in the afternoon, which is a beautiful thing. The catch? It’s only surfable, not good. The waves are there, but they’re ordinary. At Anaehoomalu Bay (A-Bay), a reef and point break, that long-period WNW swell should actually wrap in nicely, and with glassy conditions, it’ll be clean. The water temp is about average for the time of year, so no shock there. This is the pick of the entire forecast, but it’s a very, very quiet pick.
The story doesn’t improve much after that. Wednesday the 19th through to the end of the window on the 23rd offers more of the same: tiny 1.0ft to 1ft swells, periods dropping back to 11-12 seconds, and combined energy staying weak (20 to 69). The wind is mostly onshore or cross-on, killing any chance of quality. There’s a bit of a longer-period SW groundswell showing on the 21st and 22nd with a 16-second period, but the height is only 1.0ft, so the energy is just too weak.
So, the honest truth? There’s nothing to get excited about. The first real stand-out window is Tuesday afternoon, the 18th of August, at A-Bay. It’s the only day in the whole 16-day run where you might get a clean, glassy session on some tiny long-period lines. For everything else, you’re better off leaving the board in the car. It’s a tough stretch, but that’s how it goes sometimes.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Sun afternoon. Warm (max 29°C on Sat afternoon, min 25°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 29°C on Tue afternoon, min 25°C on Tue night). Wind will be generally light. | ||||||||||||||||||
Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | ||||||||||||||
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 11 | SSW 18 | SSW 18 | NE 6 | W 13 | W 12 | W 12 | W 11 | W 11 | W 10 | W 10 | W 10 | W 11 | W 11 | WNW 13 | SSW 16 | W 12 | W 12 | W 12 |
Wave Graph | |||||||||||||||||||
0 | 0 | 0 | 0 | 28 | 25 | 23 | 21 | 21 | 18 | 8 | 8 | 23 | 21 | 33 | 0 | 25 | 25 | 11 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | cross | glassy | on | on | glassy | on | glassy | cross-off | cross-on | glassy | cross-off | cross-on | cross | cross-off | cross | cross | cross-off |
High Tide | 10:56PM0.27m | 1:03PM0.81m | 00:39AM0.28m | 1:54PM0.86m | 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 | ||||||
Low Tide | 8:14PM0.25m | 8:46PM0.20m | 6:08AM0.05m | 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 | |||||||
— | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:03 | — | — | |
6:57 | — | 6:55 | — | — | 6:55 | — | — | 6:54 | — | — | 6:53 | — | — | 6:53 | — | — | 6:52 | — | |
mm | — | — | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 28 | 29 | 27 | 28 | 28 | 27 | 28 | 29 | 27 | 28 | 29 | 26 | 28 | 28 | 27 | 29 | 29 | 27 |
Feels °C | 31 | 30 | 31 | 31 | 31 | 31 | 31 | 30 | 32 | 30 | 30 | 32 | 29 | 29 | 29 | 29 | 30 | 30 | 29 |
Swell 1 Height (m) Direction Period (s) | NE 5 | NE 5 | NE 10 | NE 6 | NE 7 | NE 6 | NNE 7 | NNE 6 | NE 6 | NE 6 | NE 6 | NE 6 | NE 7 | SSW 13 | NNE 6 | NE 6 | NNE 6 | SSW 15 | SSW 15 |
21 | 21 | 15 | 32 | 49 | 47 | 35 | 28 | 59 | 31 | 33 | 49 | 11 | 32 | 39 | 33 | 61 | 44 | 71 | |
Swell 2 Height (m) Direction Period (s) | NE 11 | NE 10 | ENE 7 | SSW 18 | W 13 | W 12 | NE 6 | NE 7 | SSW 16 | W 10 | SSW 14 | SSW 14 | SSW 13 | S 18 | SSW 13 | SSW 16 | SSW 16 | SSW 12 | W 12 |
18 | 16 | 5 | 30 | 28 | 25 | 11 | 25 | 47 | 18 | 41 | 40 | 35 | 56 | 32 | 51 | 48 | 14 | 11 | |
Swell 3 Height (m) Direction Period (s) | SSW 13 | SSW 18 | SSW 18 | NE 9 | NE 9 | SSW 12 | W 12 | W 11 | W 11 | SSW 15 | W 10 | W 10 | W 11 | W 11 | WNW 13 | SSW 13 | W 12 | W 12 | S 18 |
17 | 32 | 31 | 13 | 13 | 15 | 23 | 21 | 21 | 23 | 8 | 8 | 23 | 21 | 33 | 32 | 25 | 25 | 6 | |
Wind waves Height (m) Direction Period (s) | — | — | NE 5 | — | — | — | — | — | — | — | — | — | NNE 4 | NE 5 | — | — | — | NNE 6 | NE 6 |
— | — | 28 | — | — | — | — | — | — | — | — | — | 8 | 27 | — | — | — | 63 | 88 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 34 | 96 | 36 | 21 | 87 | 88 | 30 | 96 | 33 | 30 | 91 | 50 | 30 | 94 | 96 | 21 | 96 | 17 | 21 |
Best forecast wave conditions in Big Island | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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.











