Surf Forecasts:
Anaehoomalu Bay_A-Bay surf forecast from 21 Aug 2026:
- Best quality surf: Sunday 23 Aug, 2AM (local time) - 1.5ft (0.5m), 10s period, WNW swell with cross-offshore winds.
- Most powerful swell: Sunday 23 Aug, 11AM (local time) - 1.5ft (0.5m), 11s period, WNW swell with 70 kJ wave energy.
- Next surfable swell (1★+): Sunday 23 Aug, 2AM (local time) - 1.5ft (0.5m), 10s period with WNW 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 Sunday (Aug 23) at 2AM. The primary swell is predicted to be 0.5m and 10s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Anaehoomalu Bay_A-Bay in the next 16 days are 0.5m 11s and forecast to arrive on Sunday (Aug 23) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 6s period and expected on Saturday (Aug 22) at 2PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Sun 23rd Aug) | 1.5ft (0.5m) 10s |
| Best Surf | 2AM (Sun 23rd Aug) | 1.5ft (0.5m) 10s |
| Most Powerful | 11AM (Sun 23rd Aug) | 1.5ft (0.5m) 11s |
Table - best surf conditions forecast for Anaehoomalu Bay_A-Bay over the next 16 days.
The Lowdown
Alright folks, Rusty here, let's talk about the next 16 days at Anaehoomalu Bay (A-Bay).
Honestly, looking at the charts, it's a pretty bleak stretch. The water's about 82°, which is normal for this time of year, but that's about the only thing that's average. There's a long stretch of several days right in the middle where there's absolutely nothing to ride, so don't hold your breath.
From Friday the 21st through Monday the 25th, it's all tiny and weak. We're talking waves around 0.5ft on the high side, with a wave energy barely hitting the 50s (52 on Friday morning). A long 15-second period swell on Saturday morning is just a tease with no energy behind it. It's a dead zone.
Then from Tuesday the 25th right through the end of the month, it goes completely flat for days. A brief 0.6ft blip on Thursday the 27th and Friday the 28th, but with energy at 2 and 8, you're not even standing up.
The start of September looks similar. A few 1ft pulses on Wednesday the 2nd and Thursday the 3rd from the west, but the energy is still low, from 31 to 49. The wind is solidly offshore on Wednesday afternoon, but there's just no push behind the swell. The best we see is Saturday September 5th, with a 2ft west swell, 12-second period, and 75 combined energy. The early morning has a light offshore wind from the WNW, which is the ideal direction here, but frankly, for a reef and point break like A-Bay, that's barely a ripple. It's still marked as poor surf.
So the whole 16-day window is a dud. No real standouts, no sessions to get excited about. The forecasts can flip, but as it sits, it’s a good time to take a break and do some gear repair.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Sun afternoon. Warm (max 29°C on Fri morning, min 26°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Mon afternoon. Warm (max 28°C on Mon morning, min 25°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | |||||||||||||||
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 10 | W 11 | W 10 | SW 15 | W 11 | WNW 10 | WNW 11 | WNW 11 | WNW 10 | WNW 12 | WNW 12 | WNW 11 | NE 6 | NE 6 | W 11 | NNE 5 | W 10 | S 16 | N 8 | N 8 | N 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 52 | 59 | 50 | 37 | 57 | 58 | 70 | 44 | 18 | 14 | 14 | 11 | 0 | 0 | 10 | 0 | 8 | 0 | 5 | 5 | 5 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | glassy | cross-off | on | cross | cross-off | cross-on | glassy | glassy | cross-on | glassy | glassy | cross-on | glassy | cross-off | cross-on | cross-off | cross-off | on | glassy | glassy |
High Tide | 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 | 3:38PM0.77m | 3:53AM0.51m | |||||||
Low Tide | 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 | 8:54AM0.08m | 10:14PM0.11m | |||||||||
 | |  | | | | |  |  | |  | | | | | | |  | | | | |
 | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — |
 | — | 6:46 | — | — | 6:46 | — | — | 6:45 | — | — | 6:45 | — | — | 6:44 | — | — | 6:44 | — | — | 6:43 | — |
mm | — | — | — | — | — | — | — | 1 | 1 | — | 2 | — | — | 2 | 1 | — | — | — | — | — | — |
Temp °C | 29 | 29 | 27 | 29 | 29 | 27 | 29 | 29 | 27 | 28 | 28 | 27 | 28 | 28 | 26 | 27 | 27 | 26 | 27 | 27 | 26 |
Feels °C | 32 | 32 | 32 | 32 | 33 | 31 | 33 | 33 | 30 | 31 | 32 | 32 | 31 | 32 | 30 | 29 | 30 | 28 | 30 | 30 | 30 |
Swell 1 Height (m) Direction Period (s) | NNE 7 | NE 7 | NE 7 | NE 6 | NE 6 | NE 6 | NE 6 | NE 6 | NNE 5 | NE 5 | NE 6 | NE 6 | NE 6 | NE 6 | SSW 14 | NNE 5 | SSW 17 | NNE 5 | SSW 16 | NNE 5 | NE 5 |
| kJ | 31 | 54 | 44 | 46 | 83 | 45 | 51 | 75 | 15 | 28 | 42 | 39 | 31 | 31 | 21 | 22 | 28 | 16 | 47 | 21 | 12 |
Swell 2 Height (m) Direction Period (s) | W 10 | W 11 | W 10 | WNW 10 | W 11 | WNW 10 | WNW 11 | WNW 11 | NE 6 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | SSW 12 | SSW 12 | SSW 15 | SSW 14 | SSW 13 | N 8 | SSW 15 | SSW 15 |
| kJ | 52 | 59 | 50 | 33 | 57 | 58 | 70 | 44 | 9 | 18 | 35 | 32 | 30 | 14 | 14 | 21 | 18 | 17 | 5 | 44 | 42 |
Swell 3 Height (m) Direction Period (s) | SW 17 | SW 16 | SW 16 | SW 15 | SW 16 | SW 15 | SW 15 | SSW 14 | WNW 10 | WNW 12 | WNW 12 | WNW 11 | SSW 16 | SSW 16 | W 11 | ENE 7 | W 10 | S 16 | ENE 7 | N 8 | N 8 |
| kJ | 72 | 65 | 64 | 37 | 63 | 36 | 34 | 21 | 18 | 14 | 14 | 11 | 25 | 24 | 10 | 5 | 8 | 21 | 4 | 5 | 5 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NE 5 | — | NE 5 | — | NE 5 | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 28 | — | 28 | — | 10 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 16 | 13 | 13 | 16 | 13 | 13 | 13 | 21 | 21 | 87 | 50 | 87 | 96 | 99 | 30 | 30 | 96 | 80 | 96 | 38 | 30 |
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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