Surf Forecasts:
Anaehoomalu Bay_A-Bay surf forecast from 12 Aug 2026:
- Most powerful swell: Wednesday 12 Aug, 2PM (local time) - 1.5ft (0.4m), 13s period, WNW swell with 57 kJ wave energy.
Best Forecast Surf Conditions for Anaehoomalu Bay_A-Bay this week:
The most powerful waves expected at Anaehoomalu Bay_A-Bay in the next 16 days are 0.4m 13s and forecast to arrive on Wednesday (Aug 12) at 2PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.5m 8s period and expected on Saturday (Aug 15) at 11PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2PM (Wed 12th Aug) | 1.5ft (0.4m) 13s |
Table - best surf conditions forecast for Anaehoomalu Bay_A-Bay over the next 16 days.
The Lowdown
Alright, Rusty here. Let's talk about A-Bay.
This is a bleak one for the next couple of weeks. We've got a long stretch of tiny swell and messy conditions, with no real highlight on the cards.
Right now, Wednesday the 12th, it's small with a 1ft swell from the West. The period is around 11 seconds, but the cross-shore wind has it all chopped up. The energy is weak. Thursday and Friday the 13th and 14th are more of the same, with the swell dropping to under 1ft.
Saturday the 15th, the wind goes cross-offshore, cleaning the surface, but we're still looking at a tiny 1ft wave. Sunday the 16th afternoon turns glassy, with a 1ft WNW swell, so the surface will be perfect, but there's hardly any power behind it.
The pattern of clean, glassy mornings with tiny, 1ft waves keeps rolling through next week. Thursday the 20th morning sees a longer period pulse from the Southwest at 18 seconds, pushing the energy up, but it’s only 1ft and the wind is onshore. By the afternoon, it goes glassy and the report says it's "surfable waves but very ordinary conditions." That's as good as it gets.
By Sunday the 23rd, the swell completely dies. We're looking at a solid five or six-day stretch with zero surf.
Honestly, with the water temp at 81° and the lack of wave power, this is a week for the snorkel or the stand-up paddleboard. The wind will be glassy on plenty of afternoons, but you need a wave to surf.
Leave the shortboard in the rack for now.
Rusty
Short Range ForecastMostly dry. Warm (max 29°C on Wed afternoon, min 25°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 59mm), heaviest during Sat night. Warm (max 29°C on Sun morning, min 25°C on Mon night). Winds decreasing (strong winds from the NE on Sat night, calm by Sun night). | ||||||||||||||||||||
Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 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) | W 11 | WNW 13 | SSW 16 | WNW 12 | W 12 | W 12 | W 11 | W 12 | NNE 6 | W 11 | W 14 | WNW 13 | WNW 13 | WNW 12 | WNW 12 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | W 11 | WNW 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 22 | 33 | 0 | 28 | 25 | 25 | 10 | 24 | 0 | 21 | 16 | 34 | 31 | 49 | 46 | 24 | 24 | 25 | 25 | 22 | 55 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | glassy | cross | cross | cross-off | cross | cross | cross-off | cross-off | cross-off | cross-on | cross | cross-on | cross | cross-on | glassy | cross-off | glassy | cross | glassy |
High Tide | 3:56PM0.88m | 4:09AM0.48m | 4:30PM0.83m | 4:54AM0.53m | 5:01PM0.75m | 5:39AM0.57m | 5:30PM0.66m | 6:25AM0.59m | 5:55PM0.57m | 7:15AM0.60m | 6:17PM0.49m | 8:14AM0.60m | 6:29PM0.41m | ||||||||
Low Tide | 8:56AM0.02m | 10:44PM0.08m | 9:44AM0.06m | 11:11PM0.08m | 10:32AM0.11m | 11:36PM0.08m | 11:20AM0.18m | 00:02AM0.08m | 12:11PM0.25m | 00:27AM0.10m | 1:12PM0.31m | 00:52AM0.12m | 2:39PM0.36m | 1:22AM0.14m | |||||||
 | |  | | | | | | |  |  |  | | |  | | | | | |  | |
 | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — |
 | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — | — | 6:50 | — |
mm | — | — | — | — | — | — | — | — | — | 2 | 6 | 34 | 1 | 6 | 4 | 1 | 5 | — | — | — | — |
Temp °C | 28 | 29 | 27 | 28 | 29 | 26 | 28 | 28 | 27 | 28 | 27 | 27 | 29 | 28 | 27 | 28 | 27 | 27 | 27 | 27 | 26 |
Feels °C | 29 | 31 | 31 | 29 | 29 | 27 | 28 | 28 | 28 | 27 | 24 | 32 | 31 | 31 | 31 | 33 | 30 | 29 | 30 | 30 | 29 |
Swell 1 Height (m) Direction Period (s) | SSW 13 | NNE 5 | NE 5 | SSW 16 | NNE 6 | SSW 14 | NE 8 | SSW 14 | NE 9 | SSW 13 | SSW 13 | NE 9 | NE 8 | NE 8 | NE 8 | NE 7 | NE 7 | NNE 5 | NNE 5 | NNE 5 | NNE 5 |
| kJ | 32 | 37 | 30 | 48 | 55 | 70 | 15 | 40 | 20 | 35 | 35 | 974 | 176 | 115 | 73 | 94 | 65 | 17 | 17 | 24 | 13 |
Swell 2 Height (m) Direction Period (s) | NE 7 | SSW 13 | SSW 16 | NE 7 | SSW 15 | W 12 | SSW 14 | W 12 | ENE 10 | W 11 | W 11 | ENE 10 | SSW 8 | SSW 7 | WNW 12 | WNW 11 | WNW 11 | NE 8 | NE 8 | NE 7 | WNW 13 |
| kJ | 7 | 32 | 51 | 7 | 44 | 25 | 41 | 24 | 20 | 21 | 10 | 139 | 19 | 29 | 46 | 24 | 24 | 14 | 9 | 8 | 55 |
Swell 3 Height (m) Direction Period (s) | W 11 | WNW 13 | SSW 13 | WNW 12 | W 12 | S 18 | W 11 | SW 17 | SSW 13 | W 15 | W 14 | WNW 13 | WNW 13 | WNW 12 | WSW 4 | WSW 5 | S 14 | WNW 11 | WNW 11 | W 11 | NE 7 |
| kJ | 22 | 33 | 32 | 28 | 25 | 6 | 10 | 12 | 35 | 4 | 16 | 34 | 31 | 49 | 1 | 2 | 16 | 25 | 25 | 22 | 9 |
Wind waves Height (m) Direction Period (s) | NNE 5 | — | — | NNE 5 | — | NNE 6 | NNE 6 | NE 6 | NNE 6 | NE 8 | NE 6 | — | — | — | — | — | — | — | — | — | — |
| kJ | 14 | — | — | 23 | — | 53 | 40 | 75 | 77 | 255 | 198 | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 33 | 99 | 21 | 30 | 30 | 17 | 30 | 33 | 21 | 30 | 33 | 450 | 37 | 36 | 37 | 87 | 91 | 21 | 91 | 91 | 81 |
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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