Surf Forecasts:
Anaehoomalu Bay_A-Bay surf forecast from 8 Sep 2026:
- Best quality surf: Monday 7 Sep, 11PM (local time) - 7.5ft (2.3m), 14s period, WSW swell with cross-offshore winds.
- Most powerful swell: Tuesday 8 Sep, 2AM (local time) - 8ft (2.5m), 14s period, WSW swell with 2,368 kJ wave energy.
- Next surfable swell (1★+): Monday 7 Sep, 11PM (local time) - 7.5ft (2.3m), 14s period with WSW 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 11PM. The primary swell is predicted to be 2.3m and 14s 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 2.5m 14s and forecast to arrive on Tuesday (Sep 08) 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 0.9m 12s period and expected on Monday (Sep 07) at 11PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Mon 7th Sep) | 7.5ft (2.3m) 14s |
| Best Surf | 11PM (Mon 7th Sep) | 7.5ft (2.3m) 14s |
| Most Powerful | 2AM (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, let’s talk it out in feet and miles, for those of you who think that way.
So, here’s the deal for A-Bay, the reef and point break we all know. Over the next sixteen days, the surf is mostly a dud. Let’s run through it.
Monday the 7th of September, we get a pulse – a 4ft swell from the SW, with a long 15 second period. Winds are light cross-onshore at 6 mph. The water is 82°F, about 1°F warmer than usual, so it’s a touch above average. Combined energy is moderate at 695, but the call is marginal, so it’s not a goer.
Tuesday the 8th, the swell jumps to 7ft from the WSW, 11 second period, but the wind picks up to 12 mph from the SW, making it choppy as hell. The afternoon drops to 6ft but still cross-on. That 7ft is getting stout for A-Bay, but with the wind on it, it’s no good.
From Wednesday the 9th onward, it all goes flat. Swell drops to 2ft or less, with short periods and poor conditions. There’s a long dry spell from the 9th all the way through the 19th of September – mostly waves under 2ft and bad wind. Skip it.
The only glimmer is on Sunday the 20th of September. Afternoon goes glassy – no wind – and we get a 2ft swell from the N at 11 seconds. Combined energy is 99, still weak. It’s called surfable but ordinary. That’s your best shot, and it’s a longboard day at best.
Monday the 21st and Tuesday the 22nd fade right back to tiny, poor waves. The swell is 2ft from the N on the 21st morning with a 12 second period, but the wind is onshore. No energy.
So, what’s the standout? There really isn’t one. If you’re desperate, that glassy afternoon on the 20th of September is the pick of a very quiet crop. Water temp is about average for the time of year, 82°F.
That’s it. Not much to write home about.
Rusty.
Short Range ForecastModerate rain (total 15mm), heaviest on Wed night. Warm (max 30°C on Tue morning, min 26°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Thu night. Warm (max 28°C on Fri morning, min 25°C on Thu night). Wind will be generally light. | ||||||||||||||||||
Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | ||||||||||||||
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) | WSW 14 | WSW 11 | WSW 10 | WNW 8 | W 7 | W 6 | SW 7 | SW 16 | SW 18 | SW 10 | SW 10 | SW 9 | SW 15 | WSW 8 | SW 14 | SW 14 | NNE 8 | W 11 | NE 8 |
Wave Graph  | |||||||||||||||||||
 kJ | 2368 | 1101 | 563 | 92 | 32 | 12 | 7 | 42 | 49 | 16 | 23 | 21 | 0 | 7 | 29 | 29 | 0 | 10 | 0 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-on | glassy | on | cross-on | glassy | glassy | cross-on | glassy | on | glassy | glassy | on | glassy | glassy | on | glassy | glassy |
High Tide | 1:51AM0.40m | 2:14PM0.82m | 2:34AM0.47m | 2:50PM0.80m | 3:14AM0.55m | 3:23PM0.75m | 3:52AM0.61m | 3:54PM0.69m | 4:30AM0.66m | 4:23PM0.62m | 5:07AM0.69m | 4:49PM0.54m | |||||||
Low Tide | 8:38PM0.12m | 7:15AM0.09m | 9:03PM0.10m | 8:08AM0.08m | 9:27PM0.08m | 8:58AM0.09m | 9:51PM0.06m | 9:44AM0.11m | 10:13PM0.06m | 10:31AM0.15m | 10:36PM0.06m | 11:17AM0.20m | 10:58PM0.07m | ||||||
 |  | |  | |  | |  | | | | |  |  | | | | | | |
 | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — |
 | 6:32 | — | 6:31 | — | — | 6:30 | — | — | 6:30 | — | — | 6:30 | — | — | 6:29 | — | — | 6:28 | — |
mm | — | — | — | 3 | — | 2 | 6 | 1 | 3 | 3 | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 30 | 30 | 28 | 28 | 28 | 27 | 28 | 29 | 26 | 28 | 28 | 26 | 27 | 27 | 26 | 28 | 28 | 27 |
Feels °C | 33 | 31 | 32 | 33 | 31 | 32 | 32 | 32 | 33 | 31 | 31 | 31 | 30 | 30 | 30 | 30 | 31 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | WSW 14 | WSW 11 | WSW 10 | WNW 8 | W 7 | NE 7 | NE 7 | NE 5 | NE 7 | NNE 7 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NE 8 | NE 8 | NNE 8 | NNE 8 | NE 8 |
| kJ | 2368 | 1101 | 563 | 92 | 32 | 54 | 42 | 10 | 46 | 36 | 36 | 23 | 37 | 43 | 69 | 74 | 62 | 46 | 34 |
Swell 2 Height (m) Direction Period (s) | NE 12 | NE 11 | NE 11 | NE 9 | NE 8 | W 6 | SSW 13 | NE 7 | SW 18 | SW 10 | SW 10 | NE 4 | SW 15 | SW 14 | SW 14 | SW 14 | SSW 12 | SSW 15 | NNE 4 |
| kJ | 135 | 145 | 134 | 64 | 32 | 12 | 33 | 18 | 49 | 16 | 23 | 7 | 57 | 49 | 29 | 29 | 15 | 21 | 5 |
Swell 3 Height (m) Direction Period (s) | SSW 15 | SSW 15 | SSW 14 | WSW 8 | SW 7 | SW 7 | SW 7 | SW 16 | SSW 13 | SW 16 | NE 11 | SW 9 | ENE 10 | WSW 8 | WSW 8 | W 11 | SSW 15 | W 11 | SSW 14 |
| kJ | 78 | 85 | 82 | 32 | 14 | 13 | 7 | 42 | 16 | 68 | 31 | 21 | 20 | 7 | 7 | 9 | 22 | 9 | 20 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NNE 4 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 10 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 36 | 36 | 0 | 91 | 87 | 34 | 21 | 38 | 13 | 91 | 50 | 21 | 91 | 96 | 21 | 94 | 30 | 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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