
Surf Forecasts:
Anaehoomalu Bay_A-Bay surf forecast from 13 Sep 2026:
- Best quality surf: Tuesday 15 Sep, 5AM (local time) - 1ft (0.3m), 21s period, SW swell with glassy winds.
- Most powerful swell: Wednesday 16 Sep, 5PM (local time) - 1.5ft (0.4m), 18s period, SW swell with 109 kJ wave energy.
- Next surfable swell (1★+): Tuesday 15 Sep, 5AM (local time) - 1ft (0.3m), 21s 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 Tuesday (Sep 15) at 5AM. The primary swell is predicted to be 0.3m and 21s 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 0.4m 18s and forecast to arrive on Wednesday (Sep 16) at 5PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 7s period and expected on Thursday (Sep 17) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Tue 15th Sep) | 1ft (0.3m) 21s |
| Best Surf | 5AM (Tue 15th Sep) | 1ft (0.3m) 21s |
| Most Powerful | 5PM (Wed 16th Sep) | 1.5ft (0.4m) 18s |
Table - best surf conditions forecast for Anaehoomalu Bay_A-Bay over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s talk about Anaehoomalu Bay – A-Bay for the next couple weeks. Straight off, it’s flat, so don’t hold your breath.
Starting Saturday the 12th, there’s zero surf. The water’s 82°, which is about average for the season, but that’s the only nice thing. This flat spell hangs around for days. The first week is basically a washout. A few tiny 1ft bumps pop up, but they’re blown out or just don’t have any power. The longest stretch of nothing is from the 12th right through the 16th.
We get a little hiccup of life on Wednesday the 16th afternoon. A little SW swell, about 1ft, with a 18-second period. The combined energy is 109 (moderate). That long period means it’s a groundswell, so it’ll have some push, but at A-Bay it might wall up a bit straight. It’s a reef and point set-up though, so it should wrap. Wind is light and cross-shore – not perfect, but you could get a few. Still, we’re talking 1ft waves.
Then it’s back to quiet. Next faint pulse is Sunday the 22nd afternoon with a 1ft NNW swell, 14-second period, and cross-shore breeze. Energy’s only 40 – weak. Not worth it.
The real hope is at the end. Sunday the 27th morning shows a 1ft WNW swell at 16 seconds – good direction for A-Bay. Energy hits 79. By the afternoon, it shifts to a 1ft NNW swell with a 19-second period (very long period) and the energy gets up to 98. And the wind goes glassy. For A-Bay, glassy is a big deal – clean, smooth waves.
This is the one session of the whole outlook. It’s two weeks out, so it’s a long-range maybe, but if it lines up, that glassy afternoon with a long-period groundswell from a good angle will be your best bet. It’s small enough for beginners, but it’s a consistent spot so you might have company – crowds are sometimes a thing.
Bottom line: the first ten days are mostly dead. Keep your eyes on that last weekend for your only real chance.
Rusty.
Short Range ForecastSome drizzle, heaviest during Sat night. Warm (max 28°C on Mon afternoon, min 25°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Thu night. Warm (max 29°C on Wed morning, min 26°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | |||||||||||||||
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 15 | SW 14 | SW 14 | NNE 9 | W 11 | W 11 | W 10 | SSW 22 | SSW 21 | SW 20 | SW 19 | SW 12 | SW 18 | SW 18 | SW 17 | SW 16 | NE 7 | W 9 | SW 18 | SW 9 | SW 16 |
Wave Graph | |||||||||||||||||||||
0 | 29 | 29 | 0 | 10 | 9 | 8 | 0 | 0 | 0 | 0 | 6 | 0 | 109 | 0 | 0 | 0 | 7 | 0 | 3 | 0 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | glassy | on | cross | glassy | on | cross-on | glassy | on | glassy | cross-off | cross | cross | cross-off | cross-on | glassy | glassy | cross-on | on | glassy |
High Tide | 4:23PM0.62m | 5:07AM0.69m | 4:49PM0.54m | 5:46AM0.70m | 5:13PM0.47m | 6:28AM0.68m | 5:32PM0.40m | 7:17AM0.65m | 5:42PM0.35m | 8:22AM0.62m | 9:48AM0.61m | ||||||||||
Low Tide | 10:31AM0.15m | 10:36PM0.06m | 11:17AM0.20m | 10:58PM0.07m | 12:07PM0.24m | 11:20PM0.09m | 1:05PM0.29m | 11:43PM0.12m | 2:31PM0.32m | 00:10AM0.14m | 00:45AM0.18m | 1:55AM0.21m | |||||||||
6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | |
— | 6:29 | — | — | 6:28 | — | — | 6:27 | — | — | 6:25 | — | — | 6:24 | — | — | 6:23 | — | — | 6:22 | — | |
mm | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 4 | — | 1 | 2 |
Temp °C | 27 | 27 | 26 | 27 | 27 | 26 | 27 | 28 | 27 | 28 | 28 | 27 | 29 | 29 | 28 | 29 | 28 | 27 | 28 | 28 | 27 |
Feels °C | 29 | 30 | 30 | 30 | 29 | 28 | 30 | 31 | 30 | 31 | 31 | 31 | 31 | 32 | 31 | 33 | 32 | 32 | 30 | 30 | 32 |
Swell 1 Height (m) Direction Period (s) | NNE 8 | NNE 9 | NNE 9 | NNE 9 | NNE 9 | NNE 8 | NNE 8 | NNE 8 | NNE 4 | NNE 5 | NE 6 | NNE 8 | NE 5 | NE 6 | SW 17 | NNE 6 | NE 7 | NE 7 | NE 8 | NE 7 | NE 7 |
36 | 67 | 99 | 68 | 68 | 64 | 61 | 26 | 11 | 12 | 24 | 50 | 27 | 36 | 75 | 41 | 119 | 91 | 54 | 79 | 59 | |
Swell 2 Height (m) Direction Period (s) | SW 15 | SW 14 | SW 14 | SSW 12 | W 11 | SSW 14 | SW 14 | SSW 22 | NNE 8 | NE 8 | NNE 8 | SW 19 | SW 18 | SW 18 | ENE 10 | ENE 10 | ENE 10 | SW 17 | NNE 7 | SW 17 | SW 16 |
60 | 29 | 29 | 15 | 9 | 20 | 7 | 46 | 24 | 15 | 23 | 94 | 79 | 109 | 19 | 38 | 30 | 148 | 15 | 145 | 129 | |
Swell 3 Height (m) Direction Period (s) | ENE 10 | WSW 8 | WNW 11 | SSW 15 | SSW 15 | W 11 | W 10 | SSW 14 | SSW 21 | SW 20 | SW 19 | SW 12 | NNE 7 | NNE 7 | NNE 8 | SW 16 | SW 16 | W 9 | SW 18 | SW 9 | S 16 |
9 | 7 | 12 | 22 | 21 | 9 | 8 | 18 | 45 | 98 | 96 | 6 | 11 | 10 | 14 | 65 | 64 | 7 | 78 | 3 | 19 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | NNE 4 | — | — | NNE 4 | — | — | — | — | — | — | NNE 5 | — | — | — | — | — | — |
— | — | — | — | 10 | — | — | 16 | — | — | — | — | — | — | 37 | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 91 | 91 | 91 | 91 | 30 | 30 | 91 | 94 | 34 | 13 | 13 | 13 | 16 | 13 | 13 | 85 | 50 | 11 | 16 | 13 | 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.










