Surf Forecasts:
Anaehoomalu Bay_A-Bay surf forecast from 5 Sep 2026:
- Best quality surf: Monday 7 Sep, 8PM (local time) - 6ft (1.9m), 14s period, WSW swell with glassy winds.
- Most powerful swell: Monday 7 Sep, 8PM (local time) - 6ft (1.9m), 14s period, WSW swell with 1,484 kJ wave energy.
- Next surfable swell (1★+): Sunday 6 Sep, 5PM (local time) - 2.5ft (0.8m), 11s 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 Sunday (Sep 06) at 5PM. The primary swell is predicted to be 0.8m and 11s 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 1.9m 14s and forecast to arrive on Monday (Sep 07) at 8PM. 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 (Sep 05) at 8PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Sun 6th Sep) | 2.5ft (0.8m) 11s |
| Best Surf | 8PM (Mon 7th Sep) | 6ft (1.9m) 14s |
| Most Powerful | 8PM (Mon 7th Sep) | 6ft (1.9m) 14s |
Table - best surf conditions forecast for Anaehoomalu Bay_A-Bay over the next 16 days.
The Lowdown
Alright, folks, Rusty here, and I gotta level with you. The next 16 days for Anaehoomalu Bay – A-Bay – are lookin' real flat. We're talkin' about a solid two-week stretch with pretty much nothin' worth paddlin' out for. The ocean’s just takin' a nap.
First sign of any life comes on Sunday, September 6th. The afternoon shows a tiny 3ft swell from the southwest, with a 11-second period. That's a long period groundswell, so the shape would be good if there was any power, but the combined energy is a weak 174 – it's a ghost. The water temp is a warm 82°, which is about average for the time of year.
Then Monday, September 7th, we get a little bump. Morning brings a 4ft swell from the southwest with a 14-second period, which is a very long period groundswell. The combined energy is 586 (moderate). The problem is the wind is WNW at 6 mph, blowin' onshore, so it's gonna be messy. The afternoon gets a bit bigger, 6ft from the WSW, but the wind stays cross-onshore and the combined energy hits 1111 (strong). That's a lot of juice for a beach and reef setup like A-Bay, and with onshore wind, it's gonna be a choppy, poor-quality mess. Honestly, this looks more like a kite surfer's window than a paddle surfer's.
From Tuesday the 8th all the way through to the 19th, it's a dead flat spell. Swell heights barely hit 1ft. The wind is mostly light or glassy, but you can't surf what isn't there. There are a few moments with a very long period, like 18 seconds on the 10th, but the swell is only 1ft – it's just a calm, glassy lake with no push.
The only real standout is that Monday the 7th afternoon. That 6ft southwest swell has real power, and the 14-second period means it'll have some punch. But that cross-onshore wind will ruin it for a paddle surfer. If you're a kiter, that might be your session.
For the rest of us, it's a long, flat wait. Hang in there, and remember – the forecast can always change.
Rusty.
Short Range ForecastLight rain (total 5mm), mostly falling on Sun afternoon. Warm (max 28°C on Sat morning, min 25°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 4mm), mostly falling on Tue afternoon. Warm (max 29°C on Mon afternoon, min 25°C on Wed night). Wind will be generally light. | |||||||||||||||||||
Fri 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | ||||||||||||||
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) | N 8 | SSW 12 | SSW 12 | SSW 12 | SW 11 | SW 11 | SW 11 | SW 12 | SW 14 | WSW 14 | WSW 13 | WSW 11 | W 11 | WNW 9 | WNW 8 | NE 6 | NE 7 | SW 16 | SW 18 | SW 16 |
Wave Graph  | ||||||||||||||||||||
 kJ | 1 | 0 | 0 | 0 | 0 | 0 | 174 | 281 | 586 | 1111 | 1152 | 582 | 584 | 144 | 28 | 0 | 0 | 42 | 49 | 0 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | glassy | on | cross-off | on | glassy | glassy | on | cross-on | glassy | on | cross-on | glassy | cross-on | glassy | cross-off | glassy | glassy | cross-off |
High Tide | 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 | 2:50PM0.80m | 3:14AM0.55m | 3:23PM0.75m | 3:52AM0.61m | |||||||
Low Tide | 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 | 8:08AM0.08m | 9:27PM0.08m | 8:58AM0.09m | 9:51PM0.06m | |||||||
 |  | | | |  |  |  | | | | | |  | | | | | | | |
 | — | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — |
 | 6:36 | — | — | 6:35 | — | — | 6:34 | — | — | 6:32 | — | — | 6:31 | — | — | 6:30 | — | — | 6:30 | — |
mm | — | — | — | — | — | — | 2 | 3 | — | — | — | — | 1 | 2 | — | — | 1 | — | — | — |
Temp °C | 27 | 27 | 28 | 28 | 26 | 28 | 28 | 27 | 28 | 29 | 28 | 29 | 28 | 27 | 29 | 29 | 27 | 27 | 27 | 26 |
Feels °C | 30 | 29 | 31 | 31 | 30 | 31 | 32 | 32 | 31 | 33 | 32 | 33 | 32 | 32 | 33 | 33 | 32 | 29 | 29 | 30 |
Swell 1 Height (m) Direction Period (s) | SSW 12 | NNE 5 | SSW 12 | NNE 6 | SW 11 | SW 11 | SW 11 | SW 12 | SW 14 | WSW 14 | WSW 13 | WSW 11 | W 11 | WNW 9 | NE 8 | NE 6 | NE 7 | NE 7 | NE 6 | NNE 7 |
| kJ | 115 | 24 | 180 | 47 | 126 | 147 | 174 | 281 | 586 | 1111 | 1152 | 582 | 584 | 144 | 29 | 66 | 62 | 71 | 31 | 29 |
Swell 2 Height (m) Direction Period (s) | E 14 | SSW 12 | NNE 6 | SSW 12 | NNE 6 | NNE 6 | NE 6 | ENE 12 | ENE 12 | ENE 12 | NE 12 | NE 10 | NE 9 | NE 8 | SW 8 | SW 8 | SW 8 | SW 16 | NE 7 | NE 8 |
| kJ | 16 | 111 | 37 | 177 | 33 | 32 | 25 | 113 | 133 | 167 | 224 | 184 | 101 | 55 | 29 | 15 | 15 | 42 | 18 | 16 |
Swell 3 Height (m) Direction Period (s) | N 8 | ENE 14 | ENE 13 | ENE 14 | E 13 | E 12 | E 12 | NNE 6 | NNE 6 | NNE 6 | SSW 15 | SSW 15 | SSW 14 | SW 8 | WNW 8 | SSW 13 | SSW 13 | SSW 8 | SW 18 | SW 16 |
| kJ | 1 | 63 | 57 | 61 | 86 | 75 | 75 | 15 | 23 | 26 | 89 | 85 | 82 | 38 | 28 | 34 | 33 | 6 | 49 | 67 |
Wind waves Height (m) Direction Period (s) | NE 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 52 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 30 | 34 | 13 | 13 | 13 | 13 | 0 | 0 | 13 | 16 | 0 | 37 | 8 | 0 | 91 | 38 | 34 | 96 | 91 | 13 |
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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