Surf Forecasts:
Anaehoomalu Bay_A-Bay surf forecast from 20 Aug 2026:
- Best quality surf: Thursday 20 Aug, 8PM (local time) - 1ft (0.3m), 17s period, SW swell with glassy winds.
- Most powerful swell: Sunday 23 Aug, 2AM (local time) - 2ft (0.6m), 11s period, WNW swell with 91 kJ wave energy.
- Next surfable swell (1★+): Thursday 20 Aug, 8PM (local time) - 1ft (0.3m), 17s 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 Thursday (Aug 20) at 8PM. The primary swell is predicted to be 0.3m and 17s period with a secondary swell of 0.4m and 11s. 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 11s and forecast to arrive on Sunday (Aug 23) at 2AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 6s period and expected on Sunday (Aug 23) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Thu 20th Aug) | 1ft (0.3m) 17s |
| Best Surf | 8PM (Thu 20th Aug) | 1ft (0.3m) 17s |
| Most Powerful | 2AM (Sun 23rd Aug) | 2ft (0.6m) 11s |
Table - best surf conditions forecast for Anaehoomalu Bay_A-Bay over the next 16 days.
The Lowdown
Alright, grab a coffee, because I’ve been staring at the charts for A-Bay, Anaehoomalu Bay, and it’s a rough outlook. We’re in for a long stretch of basically nothing.
The whole 16-day window, starting Thursday the 20th of August, is a bust until the very end. The first real sign of life doesn’t pop up until around the 3rd and 4th of September. That’s a solid week-plus of flat water.
Early on, Thursday 20th through Sunday 23rd, we’ve got a tiny 1 ft to 2 ft of SW to W swell. The period is long from the SW on Thursday morning – 18 seconds – but the energy is weak, with readings of 87 or lower. The wind is light and cross-on, so the surface is just rippled and messy. Water temp is about 82°, dead normal for the time of year.
Then from Monday 24th, it’s a dead zone. The swell drops to zero on many days, with occasional 0.5 ft to 1 ft of west swell and energy figures in the single digits. Even when the wind goes glassy, there’s nothing to ride.
The only light at the end of the tunnel is Thursday the 3rd and Friday the 4th of September. We start to see a west swell build to 2 ft to 3 ft, with a period of 15 to 16 seconds. The energy finally climbs into the moderate range – 127, 165, and up to 206 – so there’s some real power. The swell direction is west, and this spot is exposed to WNW, so that’s a good match. The wind is light onshore or glassy, which is massive for clean conditions. The best session looks like Friday afternoon the 4th: glassy, 3 ft of west swell, 206 energy. That’s the standout. This is a reef and point break, so that long-period west swell is going to wrap in nicely, and the glassy wind will make it clean. But we’re talking about a forecast more than a week out, so it’s a promising look, not a sure thing.
Outside of that, it’s a long, quiet wait. For a spot that’s usually consistent, this is a dry spell, but it won’t be like this forever.
Rusty.
Short Range ForecastSome drizzle, heaviest during Fri afternoon. Warm (max 29°C on Sat morning, min 26°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 8mm), mostly falling on Tue afternoon. Warm (max 29°C on Sun morning, min 26°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | |||||||||||||||
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) | SW 18 | SW 17 | W 10 | W 10 | W 11 | W 10 | SW 15 | W 11 | WNW 11 | WNW 12 | WNW 11 | WNW 10 | WNW 10 | WNW 12 | WNW 11 | NE 6 | W 12 | W 11 | W 11 | NNE 5 | NE 5 |
Wave Graph | |||||||||||||||||||||
49 | 47 | 35 | 52 | 59 | 50 | 37 | 59 | 91 | 77 | 46 | 19 | 11 | 14 | 12 | 0 | 11 | 10 | 9 | 0 | 0 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | glassy | cross-on | cross-on | glassy | on | cross | cross-off | cross | glassy | glassy | on | cross-on | glassy | on | glassy | glassy | cross-on | glassy | glassy |
High Tide | 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 | 3:11PM0.79m | 3:18AM0.46m | ||||||||
Low Tide | 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 | 8:14AM0.08m | 9:55PM0.12m | ||||||||||
6:03 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | |
— | 6:47 | — | — | 6:46 | — | — | 6:46 | — | — | 6:45 | — | — | 6:45 | — | — | 6:44 | — | — | 6:44 | — | |
mm | — | — | — | — | 1 | — | — | — | — | — | — | — | — | 2 | — | 1 | 4 | 1 | — | — | 3 |
Temp °C | 28 | 28 | 28 | 28 | 28 | 27 | 29 | 29 | 27 | 29 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 |
Feels °C | 31 | 31 | 33 | 31 | 31 | 32 | 32 | 33 | 30 | 30 | 32 | 30 | 32 | 32 | 31 | 32 | 32 | 31 | 31 | 31 | 32 |
Swell 1 Height (m) Direction Period (s) | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NE 7 | NE 6 | NE 6 | NE 6 | WNW 11 | NE 6 | NE 6 | NNE 6 | NE 6 | NE 6 | NE 6 | NE 6 | SSW 16 | SSW 14 | NNE 5 | NNE 5 | NE 5 |
33 | 42 | 31 | 31 | 52 | 40 | 54 | 54 | 91 | 51 | 85 | 18 | 46 | 58 | 31 | 31 | 24 | 21 | 13 | 21 | 28 | |
Swell 2 Height (m) Direction Period (s) | W 11 | WNW 11 | W 10 | W 10 | W 11 | W 10 | WNW 10 | W 11 | SW 15 | WNW 12 | WNW 11 | NE 5 | WNW 10 | SSW 13 | SSW 13 | SSW 12 | SSW 12 | SSW 12 | SSW 15 | SSW 17 | SSW 13 |
38 | 23 | 35 | 52 | 59 | 50 | 33 | 59 | 58 | 77 | 46 | 8 | 11 | 35 | 32 | 15 | 14 | 14 | 21 | 29 | 17 | |
Swell 3 Height (m) Direction Period (s) | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 16 | WSW 9 | SW 15 | SSW 14 | WNW 10 | SSW 13 | WNW 12 | WNW 11 | SSW 16 | W 12 | W 11 | W 11 | SSW 14 | SSW 16 |
49 | 47 | 69 | 69 | 39 | 64 | 37 | 63 | 9 | 34 | 21 | 19 | 18 | 14 | 12 | 25 | 11 | 10 | 9 | 18 | 26 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | NE 6 | — | — | — | — | — | — | — | NE 6 | NNE 5 | — | — | — |
— | — | — | — | — | — | — | — | 52 | — | — | — | — | — | — | — | 47 | 21 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 16 | 13 | 13 | 16 | 8 | 13 | 13 | 13 | 0 | 16 | 13 | 21 | 87 | 36 | 30 | 96 | 21 | 30 | 96 | 38 | 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.











