
Surf Forecasts:
Anaehoomalu Bay_A-Bay surf forecast from 6 Aug 2026:
- Most powerful swell: Wednesday 12 Aug, 5PM (local time) - 1ft (0.3m), 13s period, W swell with 30 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 glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 6s period and expected on Saturday (Aug 08) at 5PM.
| 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, this is Rusty. Let's have a look at what's on offer for our local stretch.
Right off the bat, I gotta be straight with you – it’s a tough run ahead for Anaehoomalu Bay (A-Bay). This is a reef and point setup that usually needs a decent push from the west-northwest, but we’re looking at a long, frustrating stretch of tiny surf.
Starting now, we're looking at a real flat spell. For the first week and a half, through to about the 16th of August, it's pretty much a write-off. The swell is consistently below 1 ft, which is just not enough to push a wave face. You’ll see a few ripples, but nothing you’d paddle out for. The wind is often light, which is a tease, but the wave energy is just not there. The combined energy is barely registering, often in the single digits or low twenties.
Then, around the 17th of August, things start to change. On Monday afternoon, we finally see a bit of life. The swell bumps up to 1.0 ft from the WNW with a solid 14-second period – that's some long-period groundswell energy. The combined energy climbs to 84, which is getting into a modest range. The winds go glassy. It's described as "surfable waves but very ordinary conditions". It’s not going to be a classic, but after a week and a half of nothing, a knee-high, glassy wave with that much period might be the only thing worth a splash. The crowd factor is "sometimes" here, so you might have some company for those tiny nuggets.
Tuesday the 18th is similar in size but the wind gets a bit messy, and it’s not as clean. The real interesting one pops up on Wednesday the 19th. That afternoon, we get a 1.0 ft swell from the SW with a whopping 18-second period, and the combined energy hits 76. It’s still small, but the direction is a bit different for A-Bay, and with that long period, the reef might just focus that energy into a clean little bank. Winds are glassy again. This is your best chance for a sneaky, clean wave, but it’s still only a small, long-period swell that works best at points and reefs.
Look, there’s nothing big on the cards. The standout moment is that Wednesday 19th afternoon – the cleanest, most promising combo of the whole 16-day run. The first week is a total gap with zero recommendations. After that, it’s a couple of small windows of opportunity in the second week, but nothing to get too excited about. The water temp is a normal 81° for this time of year.
Stay patient. The good news is, forecasts can change, and this place can turn on a dime. But for now, it’s a waiting game.
Rusty.
Short Range ForecastMostly dry. Warm (max 28°C on Thu morning, min 25°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Sun afternoon. Warm (max 29°C on Tue morning, min 26°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | |||||||||||||||
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) | W 12 | W 12 | SSW 14 | W 12 | W 12 | NE 5 | SSW 18 | NE 6 | NE 6 | W 13 | W 12 | W 12 | W 11 | W 11 | W 10 | W 10 | W 15 | W 11 | S 18 | W 13 | SSW 16 |
Wave Graph | |||||||||||||||||||||
11 | 12 | 0 | 11 | 11 | 0 | 0 | 0 | 0 | 28 | 25 | 23 | 21 | 21 | 19 | 8 | 17 | 23 | 0 | 30 | 0 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | glassy | cross-on | glassy | glassy | cross-on | cross | glassy | on | cross-on | glassy | on | glassy | glassy | cross-on | glassy | cross-off | on | glassy | cross-off |
High Tide | 10:51AM0.68m | 8:14PM0.32m | 12:04PM0.74m | 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 | |||||||
Low Tide | 7:20PM0.32m | 3:40AM0.09m | 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 | |||||||||
6:00 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | |
— | 6:57 | — | — | 6:57 | — | — | 6:55 | — | — | 6:55 | — | — | 6:54 | — | — | 6:53 | — | — | 6:53 | — | |
mm | — | — | — | — | — | — | — | — | — | — | 2 | 1 | — | 2 | 1 | — | — | — | — | — | — |
Temp °C | 28 | 28 | 26 | 28 | 28 | 26 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 29 | 29 | 26 | 28 | 28 | 27 |
Feels °C | 31 | 31 | 30 | 29 | 31 | 30 | 30 | 30 | 31 | 31 | 32 | 31 | 31 | 32 | 32 | 31 | 32 | 30 | 30 | 30 | 31 |
Swell 1 Height (m) Direction Period (s) | NE 5 | NE 8 | NNE 4 | W 12 | NE 5 | NE 5 | NE 5 | NE 8 | NE 6 | NE 6 | NE 6 | NE 7 | NNE 5 | NE 7 | NE 7 | NE 6 | SSW 14 | NE 6 | NNE 6 | NE 5 | NNE 5 |
13 | 9 | 8 | 11 | 27 | 21 | 23 | 10 | 51 | 58 | 68 | 53 | 17 | 65 | 46 | 38 | 40 | 31 | 25 | 28 | 16 | |
Swell 2 Height (m) Direction Period (s) | NE 8 | W 12 | SSW 14 | SSW 14 | W 12 | NE 7 | NE 10 | SSW 18 | SSW 18 | W 13 | W 12 | W 12 | NE 7 | SSW 15 | W 10 | SSW 14 | W 10 | SSW 13 | SSW 13 | SSW 13 | SSW 16 |
10 | 12 | 20 | 18 | 11 | 13 | 15 | 31 | 30 | 28 | 25 | 23 | 16 | 47 | 19 | 40 | 8 | 35 | 32 | 32 | 51 | |
Swell 3 Height (m) Direction Period (s) | W 12 | SSW 14 | ENE 8 | ENE 7 | SSW 13 | SSW 13 | SSW 18 | SSW 13 | SSW 13 | SSW 16 | SSW 12 | SSW 12 | W 11 | W 11 | SSW 15 | W 10 | W 15 | W 11 | S 18 | W 13 | SSW 13 |
11 | 19 | 6 | 5 | 18 | 17 | 32 | 17 | 17 | 26 | 15 | 14 | 21 | 21 | 23 | 8 | 17 | 23 | 56 | 30 | 32 | |
Wind waves Height (m) Direction Period (s) | — | NNE 5 | — | NNE 5 | — | — | — | NE 6 | — | — | — | — | — | — | — | — | NE 6 | — | — | — | — |
— | 17 | — | 14 | — | — | — | 44 | — | — | — | — | — | — | — | — | 56 | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 91 | 91 | 85 | 94 | 91 | 30 | 91 | 30 | 21 | 88 | 37 | 30 | 96 | 33 | 30 | 99 | 96 | 30 | 94 | 30 | 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.











