
Surf Forecasts:
Anaehoomalu Bay_A-Bay surf forecast from 4 Aug 2026:
- Most powerful swell: Monday 10 Aug, 5AM (local time) - 1.5ft (0.4m), 11s period, W swell with 37 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 11s and forecast to arrive on Monday (Aug 10) 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 1.0m 7s period and expected on Sunday (Aug 09) at 2PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5AM (Mon 10th Aug) | 1.5ft (0.4m) 11s |
Table - best surf conditions forecast for Anaehoomalu Bay_A-Bay over the next 16 days.
The Lowdown
Alright, Rusty here. I’m looking at the forecast, and I’ve got to be honest with you – it’s a pretty quiet run for the first ten days or so. We’re looking at a lot of ankle-slappers and “poor surf conditions” warnings. The wave energy is in the low double digits (10-42) for the first week, which is about as weak as it gets. If you’re looking to paddle out, you’re better off finding a swimming pool.
Things do start to wake up a little in the second week. Around the 13th of August, we get a real pulse of energy. The combined energy jumps to 173, then 225, and by the 14th it’s peaking at 351. That’s a serious change. The swell is coming from the west, shifting to the west-northwest, and the period is a very long 17 to 18 seconds. That’s proper groundswell, with a lot of push. The water temperature is 27°C, which is a full degree warmer than usual for this time of year.
The one standout window is the afternoon of Thursday, 13th August, at Anaehoomalu Bay_A-Bay (A-Bay). We’ve got 0.6m of swell from the west, with a very long 18-second period, and the combined energy hits 225. The wind is glassy from the northwest, which means the surface will be clean and smooth. This is a reef and point setup, so that long-period groundswell is going to wrap in nicely. The 14th has a slightly bigger swell (0.8m), but the wind is a little more cross-onshore, so the 13th afternoon is the better bet. It’s a consistent spot, but it gets busy, so expect some company.
The 15th and 16th are still surfable but on the drop, with the energy fading back to 203 and 144, and the wind getting a bit choppy. The 17th and 18th are small and clean again, but nothing to write home about. The long period means the sets will be more spaced out, which is fine for the point break character of A-Bay.
So, the long and short of it: the first ten days are a dud. The only real chance for a decent wave is the afternoon of the 13th. It’s not huge, but it’s the only thing on the board.
Rusty.
Short Range ForecastMostly dry. Warm (max 28°C on Tue morning, min 25°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 28°C on Fri morning, min 25°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Mon 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | ||||||||||||||
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 12 | W 12 | N 6 | W 11 | W 13 | W 13 | W 12 | W 12 | W 12 | W 12 | SSW 14 | W 12 | W 12 | NE 8 | NE 7 | NNE 6 | W 13 | W 12 | W 11 | W 11 |
Wave Graph | ||||||||||||||||||||
10 | 11 | 6 | 10 | 12 | 28 | 11 | 11 | 11 | 12 | 0 | 11 | 11 | 0 | 0 | 0 | 29 | 25 | 22 | 23 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | glassy | on | glassy | glassy | glassy | on | glassy | on | glassy | cross-off | cross-on | glassy | glassy | cross-on | cross | glassy | on | cross | glassy |
High Tide | 6:26PM0.57m | 8:13AM0.58m | 6:53PM0.49m | 9:29AM0.62m | 7:23PM0.40m | 10:51AM0.68m | 8:14PM0.32m | 12:04PM0.74m | 10:56PM0.27m | 1:03PM0.81m | 00:39AM0.28m | 1:54PM0.86m | 1:45AM0.32m | |||||||
Low Tide | 1:13AM0.10m | 2:00PM0.35m | 1:49AM0.10m | 4:11PM0.37m | 2:36AM0.10m | 7:20PM0.32m | 3:40AM0.09m | 8:14PM0.25m | 8:46PM0.20m | 6:08AM0.05m | 9:17PM0.15m | |||||||||
— | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | |
6:59 | — | — | 6:59 | — | — | 6:58 | — | — | 6:57 | — | — | 6:57 | — | — | 6:55 | — | — | 6:55 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 1 |
Temp °C | 27 | 26 | 28 | 28 | 27 | 28 | 28 | 26 | 28 | 27 | 26 | 28 | 28 | 26 | 28 | 28 | 27 | 28 | 28 | 27 |
Feels °C | 29 | 30 | 31 | 31 | 31 | 31 | 30 | 30 | 30 | 30 | 30 | 30 | 31 | 29 | 30 | 30 | 30 | 31 | 32 | 31 |
Swell 1 Height (m) Direction Period (s) | NNE 6 | N 6 | ENE 11 | NNE 6 | ENE 10 | NE 9 | NNE 5 | NNE 5 | NE 5 | NE 5 | NE 4 | NE 4 | NE 6 | NNE 5 | NE 7 | NE 10 | NE 6 | NE 7 | NE 7 | NNE 5 |
20 | 18 | 47 | 20 | 39 | 22 | 19 | 9 | 16 | 28 | 10 | 10 | 60 | 19 | 35 | 14 | 54 | 82 | 82 | 22 | |
Swell 2 Height (m) Direction Period (s) | NE 8 | ENE 11 | N 6 | ENE 11 | NNE 6 | W 13 | NE 9 | NE 8 | NE 8 | NE 8 | NE 8 | NE 9 | W 12 | NE 8 | NE 10 | SSW 18 | SSW 18 | W 12 | W 11 | NE 7 |
17 | 48 | 6 | 46 | 10 | 28 | 20 | 11 | 10 | 9 | 9 | 14 | 11 | 14 | 14 | 31 | 30 | 25 | 22 | 27 | |
Swell 3 Height (m) Direction Period (s) | W 12 | W 12 | NE 6 | W 11 | W 13 | NNE 9 | W 12 | W 12 | W 12 | W 12 | SSW 14 | W 12 | SSW 13 | SSW 13 | SSW 18 | SSW 13 | W 13 | SSW 16 | SSW 12 | W 11 |
10 | 11 | 6 | 10 | 12 | 8 | 11 | 11 | 11 | 12 | 20 | 11 | 18 | 17 | 32 | 17 | 29 | 26 | 15 | 23 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | NNE 5 | — | — | — | — | — | — | — | — | — | NNE 6 | — | — | — | — |
— | — | — | — | — | 10 | — | — | — | — | — | — | — | — | — | 57 | — | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 91 | 33 | 91 | 30 | 30 | 91 | 91 | 33 | 91 | 50 | 30 | 91 | 91 | 30 | 96 | 30 | 30 | 87 | 30 | 34 |
Best forecast wave conditions in Big Island | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
Latest Updates
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.











