Surf Forecasts:
Anaehoomalu Bay_A-Bay surf forecast from 9 Aug 2026:
- Most powerful swell: Wednesday 12 Aug, 2PM (local time) - 1ft (0.3m), 13s period, WNW swell with 34 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 2PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 6s period and expected on Sunday (Aug 09) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2PM (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, let’s get real here. No sugar-coating it: this is a tough stretch for A-Bay. The swell is tiny, barely a ripple for most of the run. We’re looking at a long, flat spell ahead.
The pick of a very thin bunch is Anaehoomalu Bay (A-Bay). It’s a consistent reef and point setup, and we’re mostly seeing tiny WNW groundswell pulses. The first few days, from the 9th right through the 11th, the waves are barely there—poor surf with heights at just `1ft` and combined swell energy barely making a sound (28, 25, 21). The wind does go glassy on a couple of those afternoons, which is the only saving grace. The water temp is about average for this time of year, so no surprises there.
Honestly, nothing in this 16-day window is a true standout. The best little chance you get is around the 18th and 19th of August. On Wednesday the 19th afternoon, we finally see a tiny jump to `2ft` from the west, with a period of 12 seconds and combined energy up to 73. The wind goes glassy that afternoon too, giving us the only “surfable” conditions of the whole outlook. It’s still very ordinary, but it’s the best we’ve got. The swell direction from the west lines up with what the spot likes, so there might be a clean little peak if you’re desperate.
After that, it fades back to nothing. The wind starts picking up, swinging cross and cross-onshore from the north-northeast, and the swell drops back to `0.7ft` or `1ft`. By the 23rd and 24th, it’s back to almost flat with energy readings of just 8.
Bottom line: a long, quiet run. Don’t get your hopes up. If you absolutely have to get wet, pencil in Wednesday afternoon the 19th for a chance at a clean, tiny wave.
- Rusty
Short Range ForecastLight rain (total 2mm), mostly falling on Sun afternoon. Warm (max 29°C on Mon morning, min 26°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 29°C on Thu afternoon, min 25°C on Tue night). Wind will be generally light. | ||||||||||||||||||
Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | ||||||||||||||
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 | W 13 | W 12 | W 12 | W 11 | W 11 | W 10 | SSW 14 | W 10 | W 11 | W 11 | WNW 13 | SSW 16 | WNW 12 | NNE 6 | W 12 | W 11 | W 12 | W 12 |
Wave Graph  | |||||||||||||||||||
 kJ | 0 | 28 | 25 | 23 | 21 | 21 | 19 | 0 | 8 | 23 | 22 | 33 | 0 | 28 | 0 | 11 | 10 | 24 | 12 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | glassy | glassy | on | glassy | cross-off | cross | glassy | glassy | cross | glassy | cross-off | cross | cross | cross-off | cross | cross | cross-off |
High Tide | 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 | 5:01PM0.75m | |||||||
Low Tide | 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 | 10:32AM0.11m | 11:36PM0.08m | ||||||
 |  |  | | | | | | | | | | | | | | | | | |
 | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — |
 | 6:55 | — | 6:55 | — | — | 6:54 | — | — | 6:53 | — | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — |
mm | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 28 | 28 | 27 | 29 | 29 | 27 | 28 | 29 | 26 | 28 | 28 | 26 | 28 | 29 | 27 | 28 | 29 | 26 |
Feels °C | 32 | 31 | 32 | 32 | 32 | 32 | 30 | 29 | 31 | 30 | 29 | 30 | 29 | 29 | 30 | 29 | 29 | 29 | 27 |
Swell 1 Height (m) Direction Period (s) | NE 6 | NE 7 | NE 6 | NNE 5 | NE 7 | NE 6 | NE 5 | NE 4 | NE 6 | NNE 5 | NNE 5 | NE 6 | NE 5 | SSW 16 | NNE 6 | SSW 14 | NNE 7 | NNE 7 | SSW 13 |
| kJ | 33 | 36 | 73 | 17 | 44 | 58 | 30 | 9 | 46 | 17 | 15 | 44 | 29 | 48 | 39 | 70 | 61 | 93 | 35 |
Swell 2 Height (m) Direction Period (s) | NE 9 | W 13 | W 12 | W 12 | W 11 | SSW 15 | W 10 | NE 6 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | WNW 12 | SSW 15 | W 12 | SSW 14 | SSW 14 | W 12 |
| kJ | 13 | 28 | 25 | 23 | 21 | 47 | 19 | 19 | 40 | 35 | 32 | 32 | 32 | 28 | 44 | 11 | 69 | 40 | 11 |
Swell 3 Height (m) Direction Period (s) | SSW 18 | NE 9 | SSW 12 | NE 7 | SSW 12 | W 11 | SSW 15 | SSW 14 | W 10 | W 11 | W 11 | WNW 13 | SSW 16 | SSW 12 | SSW 12 | S 18 | W 11 | W 12 | SW 17 |
| kJ | 30 | 13 | 15 | 8 | 14 | 21 | 23 | 41 | 8 | 23 | 22 | 33 | 51 | 28 | 28 | 6 | 10 | 24 | 12 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | NE 5 | — | NE 7 | — | — | NNE 8 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 29 | — | 65 | — | — | 117 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 21 | 96 | 31 | 34 | 96 | 96 | 30 | 91 | 38 | 34 | 94 | 96 | 33 | 96 | 21 | 33 | 96 | 30 | 33 |
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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