Surf Forecasts:
Anaehoomalu Bay_A-Bay surf forecast from 3 Sep 2026:
- Best quality surf: Tuesday 8 Sep, 2AM (local time) - 7ft (2.2m), 14s period, WSW swell with cross-offshore winds.
- Most powerful swell: Tuesday 8 Sep, 5AM (local time) - 8ft (2.5m), 14s period, WSW swell with 2,618 kJ wave energy.
- Next surfable swell (1★+): Monday 7 Sep, 5AM (local time) - 4ft (1.2m), 12s 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 Monday (Sep 07) at 5AM. The primary swell is predicted to be 1.2m and 12s period. 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 2.5m 14s and forecast to arrive on Tuesday (Sep 08) 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 1.2m 13s period and expected on Sunday (Sep 06) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Mon 7th Sep) | 4ft (1.2m) 12s |
| Best Surf | 2AM (Tue 8th Sep) | 7ft (2.2m) 14s |
| Most Powerful | 5AM (Tue 8th Sep) | 8ft (2.5m) 14s |
Table - best surf conditions forecast for Anaehoomalu Bay_A-Bay over the next 16 days.
The Lowdown
Alright, Rusty here. Let's have a look at what we've got shaping up.
To be honest, the next week and a half is a bit of a flat spell for A-Bay. There's practically nothing on offer from now until the end of the first week of September. The water's sitting at a warm 82°, which is about average for this time of year, so at least it'll be a nice swim.
We finally see a pulse of energy arriving on Monday, September 7th. The morning brings a 4ft swell out of the southwest with a long 13-second period. The combined energy is moderate at 493. It's a bit of a tricky one though, because the wind is light and onshore from the WNW, which will mess up the surface. The afternoon bumps up to 5ft from the same direction, with stronger energy at 701, but we've got cross-onshore wind and rain showers. It's a marginal call, and only really for the keen ones on a bigger board.
The real standout—and the only one I'd get excited about—is Tuesday, September 8th. The morning shows us a solid 8ft swell from the WSW, with a long 13-second period. That's an expert-only zone with that size; it will be powerful out there. The combined energy is a very strong 2469. However, the wind is a moderate cross-shore from the southwest, so it'll be choppy. If you're an experienced surfer and don't mind a bit of a battle, this is the window.
After that, it drops off again fast. The afternoon of the 8th drops to 8ft with a shorter 11-second period, and the wind turns cross-onshore and choppy. The rest of the 16-day run is tiny waves or flat, with the odd 1ft pulse. Not worth paddling out for.
So, to sum it up: the whole 16-day run is mostly flat, with one big but messy window on Tuesday the 8th. That's your only real chance for a wave, and it's a big, powerful one. For the rest, leave the boards at home.
Rusty.
Short Range ForecastMostly dry. Warm (max 29°C on Thu afternoon, min 25°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 5mm), mostly falling on Sun afternoon. Warm (max 30°C on Tue morning, min 26°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Wed 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | ||||||||||||||
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 10 | NNE 7 | W 9 | NE 6 | NE 6 | N 8 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SW 12 | SW 13 | SW 12 | SW 13 | SW 13 | WSW 14 | WSW 13 | WSW 11 | W 10 |
Wave Graph  | ||||||||||||||||||||
 kJ | 8 | 8 | 0 | 2 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 473 | 701 | 2025 | 2469 | 1261 | 313 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross | cross-off | cross-off | cross | cross | cross-off | cross-on | cross-on | glassy | on | cross-on | glassy | on | cross-on | cross-off | cross | cross-on | cross |
High Tide | 6:14PM0.39m | 8:57AM0.68m | 6:22PM0.32m | 10:26AM0.70m | 9:07PM0.26m | 11:45AM0.74m | 11:48PM0.27m | 12:45PM0.78m | 1:01AM0.33m | 1:33PM0.81m | 1:51AM0.40m | 2:14PM0.82m | 2:34AM0.47m | |||||||
Low Tide | 2:26PM0.33m | 00:53AM0.09m | 5:34PM0.32m | 1:47AM0.12m | 7:35PM0.26m | 3:13AM0.14m | 7:49PM0.20m | 4:53AM0.13m | 8:13PM0.16m | 6:12AM0.11m | 8:38PM0.12m | 7:15AM0.09m | 9:03PM0.10m | |||||||
 |  | | | | | | | | | | |  |  | | | | | |  | |
 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — |
 | 6:37 | — | — | 6:37 | — | — | 6:36 | — | — | 6:35 | — | — | 6:34 | — | — | 6:32 | — | — | 6:31 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 3 | — | 1 | — | — | — | 1 |
Temp °C | 28 | 26 | 28 | 29 | 25 | 28 | 28 | 26 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 29 | 28 | 30 | 30 | 28 |
Feels °C | 31 | 27 | 28 | 29 | 25 | 29 | 30 | 28 | 30 | 30 | 32 | 31 | 31 | 31 | 31 | 33 | 32 | 31 | 31 | 33 |
Swell 1 Height (m) Direction Period (s) | NE 7 | NE 8 | NNE 7 | NE 7 | S 13 | NE 6 | SSW 12 | NNE 6 | NNE 6 | NNE 6 | SSW 12 | SW 12 | SW 13 | SW 12 | SW 13 | SW 13 | WSW 14 | NE 10 | WSW 11 | W 10 |
| kJ | 107 | 82 | 64 | 85 | 31 | 54 | 48 | 30 | 52 | 49 | 231 | 268 | 451 | 430 | 473 | 701 | 2025 | 94 | 1261 | 313 |
Swell 2 Height (m) Direction Period (s) | SSW 15 | SSW 15 | NE 5 | S 14 | ENE 8 | SSW 13 | E 14 | SSW 12 | SSW 12 | SSW 12 | NNE 7 | NNE 7 | NNE 6 | NNE 6 | ENE 12 | NE 6 | NE 11 | SSW 15 | NE 9 | SW 9 |
| kJ | 45 | 42 | 6 | 16 | 6 | 33 | 16 | 75 | 106 | 156 | 34 | 37 | 33 | 30 | 167 | 43 | 171 | 43 | 67 | 132 |
Swell 3 Height (m) Direction Period (s) | W 10 | W 10 | S 14 | W 9 | E 14 | S 11 | N 8 | ENE 14 | ENE 14 | ENE 13 | E 13 | ENE 12 | ENE 12 | ENE 12 | SSW 17 | ENE 12 | SSW 16 | E 14 | SSW 14 | NNE 8 |
| kJ | 8 | 8 | 16 | 2 | 4 | 21 | 1 | 66 | 66 | 60 | 87 | 82 | 83 | 115 | 96 | 121 | 81 | 15 | 70 | 46 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | NE 6 | — | NE 6 | — | — | — | — | — | — | — | NNE 6 | — | — | WSW 13 | — | — |
| kJ | — | — | — | — | 34 | — | 73 | — | — | — | — | — | — | — | 20 | — | — | 2469 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 91 | 33 | 99 | 21 | 33 | 99 | 107 | 13 | 91 | 11 | 11 | 13 | 11 | 11 | 16 | 13 | 0 | 36 | 36 | 5 |
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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