Surf Forecasts:
Anaehoomalu Bay_A-Bay surf forecast from 19 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 11PM (local time) - 1ft (0.3m), 16s period, SW swell with glassy winds.
- Most powerful swell: Sunday 23 Aug, 5AM (local time) - 2ft (0.6m), 12s period, WNW swell with 107 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 11PM (local time) - 1ft (0.3m), 16s period with SW swell.
Best Forecast Surf Conditions for Anaehoomalu Bay_A-Bay this week:
The surf forecast for Anaehoomalu Bay_A-Bay over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 19) at 11PM. The primary swell is predicted to be 0.3m and 16s period with a secondary swell of 0.3m and 12s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Anaehoomalu Bay_A-Bay in the next 16 days are 0.6m 12s and forecast to arrive on Sunday (Aug 23) 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 1.9m 6s period and expected on Sunday (Aug 23) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Wed 19th Aug) | 1ft (0.3m) 16s |
| Best Surf | 11PM (Wed 19th Aug) | 1ft (0.3m) 16s |
| Most Powerful | 5AM (Sun 23rd Aug) | 2ft (0.6m) 12s |
Table - best surf conditions forecast for Anaehoomalu Bay_A-Bay over the next 16 days.
The Lowdown
Alright, let's get into it, yeah? This is Rusty, and I've got a look at the next 16 days for us.
Right off the bat, I gotta be honest with you – it's a grim stretch ahead. The good news is that we're only looking at one spot, Anaehoomalu Bay, better known as A-Bay. It's a reef and point setup, fairly exposed to the swell, and it likes a swell from the WNW. The water temp is sittin' about average for this time of year, so no surprises there.
The bad news is that for the first week and a half, from Wednesday the 19th right through to the end of August, we're staring at a flat spell. There's nothing to get excited about. The swell energy is virtually non-existent, with readings barely hitting the double digits, and the wave heights are mostly under 2 ft. It's a classic summer lull for this part of the world. Even the wind, which is often clean from the North or Northwest, can't make something out of nothing.
The first real glimpse of hope doesn't come until Sunday the 30th of August. In the afternoon, we see a tiny pulse of WNW swell around 1 ft, with a period of 14 seconds and a combined energy of (67). The wind goes glassy from the NNE, which is a major plus. The guidance notes this as "surfable waves but very ordinary conditions," which is about as optimistic as I can get. It's small, but it'll be clean. For a true standout, that Sunday afternoon is as close as we get.
Then on Monday the 31st, the morning shows a bit of WNW swell at 1 ft with a 13-second period and energy at (72), but it's crossed up. The afternoon goes glassy again but drops to 1 ft. The pattern continues into the first few days of September with tiny, weak 1 ft to 1 ft swells, but the wind is often cross-shore or onshore, especially around the 2nd of September when it's a moderate cross-chop from the NNE.
The long-range outlook into the first week of September is a bit more promising but still uncertain. There's a chance of a slightly better WNW swell around the 3rd of September, with a 1 ft swell and a 13-second period, and the wind looks glassy. But it's far out, so don't book your flights just yet.
Overall, for the next 16 days, the best we can call is a tiny, clean window Sunday afternoon, August 30th. Everything else is a flat or very weak. The break is inconsistent for this, so a blank run like this isn't a total shock. It's a waiting game, but with such small swell, this setup honestly looks more interesting for a kite than a paddle.
Rusty
Short Range ForecastSome drizzle, heaviest during Fri afternoon. Warm (max 28°C on Wed morning, min 26°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 16mm), heaviest on Sun night. Warm (max 29°C on Sat morning, min 25°C on Sun night). Winds decreasing (near gales from the NE on Sun afternoon, calm by Mon night). | ||||||||||||||||||||
Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | |||||||||||||||
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) | WNW 12 | WNW 12 | SW 16 | SW 18 | SW 17 | W 11 | W 10 | W 10 | W 11 | W 10 | WNW 10 | WNW 10 | WNW 11 | WNW 11 | SW 14 | WNW 12 | WNW 11 | NE 8 | NE 7 | NE 6 | NNE 5 |
Wave Graph | |||||||||||||||||||||
48 | 28 | 41 | 49 | 47 | 35 | 54 | 52 | 57 | 53 | 62 | 62 | 71 | 45 | 32 | 13 | 13 | 0 | 0 | 0 | 0 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | glassy | on | cross-on | glassy | on | glassy | glassy | cross | cross | cross-off | cross-off | cross-off | glassy | glassy | glassy | glassy | cross-on | cross-on | glassy |
High Tide | 9:26AM0.60m | 10:50AM0.61m | 12:03PM0.64m | 11:21PM0.26m | 12:57PM0.68m | 00:46AM0.28m | 1:38PM0.72m | 1:33AM0.32m | 2:12PM0.75m | 2:09AM0.36m | 2:42PM0.78m | 2:44AM0.41m | |||||||||
Low Tide | 2:03AM0.16m | 3:10AM0.18m | 8:46PM0.25m | 8:47PM0.22m | 5:53AM0.15m | 9:01PM0.19m | 6:48AM0.12m | 9:18PM0.17m | 7:33AM0.09m | 9:36PM0.14m | |||||||||||
6:03 | — | — | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | |
— | 6:49 | — | — | 6:47 | — | — | 6:46 | — | — | 6:46 | — | — | 6:45 | — | — | 6:45 | — | — | 6:44 | — | |
mm | — | — | — | — | — | — | — | 1 | — | — | — | — | 2 | 4 | 7 | 3 | — | — | — | — | — |
Temp °C | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 26 | 29 | 29 | 28 | 27 | 28 | 28 | 26 | 28 | 27 | 28 | 28 | 27 |
Feels °C | 31 | 31 | 31 | 31 | 31 | 32 | 31 | 31 | 31 | 31 | 30 | 25 | 25 | 23 | 23 | 30 | 32 | 31 | 31 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | NNE 4 | WNW 12 | NNE 6 | NNE 6 | NNE 7 | NNE 7 | NNE 7 | NE 7 | NE 7 | W 10 | NE 6 | WNW 10 | WNW 11 | WNW 11 | NE 7 | NE 7 | NE 7 | NE 8 | NE 7 | NE 6 | NNE 5 |
7 | 28 | 22 | 23 | 31 | 31 | 32 | 63 | 44 | 53 | 54 | 62 | 71 | 45 | 127 | 114 | 121 | 67 | 62 | 43 | 17 | |
Swell 2 Height (m) Direction Period (s) | WNW 12 | NNE 6 | WNW 11 | W 11 | WNW 11 | W 11 | W 10 | W 10 | W 11 | SW 15 | WNW 10 | WNW 12 | SW 15 | SSW 14 | WNW 10 | SSW 14 | SSW 13 | SSW 13 | SSW 12 | ENE 7 | SSW 14 |
48 | 8 | 25 | 38 | 23 | 35 | 54 | 52 | 57 | 37 | 62 | 30 | 34 | 21 | 10 | 19 | 35 | 32 | 30 | 18 | 21 | |
Swell 3 Height (m) Direction Period (s) | NNE 7 | W 7 | SW 16 | SW 18 | SW 17 | SW 16 | SW 17 | SW 16 | SW 16 | WSW 10 | SW 16 | SW 15 | WSW 9 | SSW 16 | SW 14 | WNW 12 | WNW 11 | SSW 6 | SSW 16 | SSW 12 | SSW 12 |
5 | 4 | 41 | 49 | 47 | 69 | 72 | 39 | 64 | 10 | 63 | 58 | 8 | 24 | 32 | 13 | 13 | 4 | 25 | 29 | 14 | |
Wind waves Height (m) Direction Period (s) | — | NE 5 | — | — | — | — | — | — | — | NE 6 | — | NE 4 | NE 5 | NE 6 | — | — | — | — | — | — | — |
— | 11 | — | — | — | — | — | — | — | 42 | — | 38 | 129 | 236 | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 91 | 33 | 5 | 16 | 16 | 13 | 13 | 0 | 13 | 16 | 16 | 30 | 31 | 30 | 21 | 34 | 34 | 34 | 96 | 50 | 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.











