Surf Forecasts:
Anaehoomalu Bay_A-Bay surf forecast from 20 Jul 2026:
- Most powerful swell: Monday 20 Jul, 11AM (local time) - 1ft (0.3m), 12s period, WNW swell with 27 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 0.3m 12s and forecast to arrive on Monday (Jul 20) at 11AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 8s period and expected on Sunday (Jul 26) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11AM (Mon 20th Jul) | 1ft (0.3m) 12s |
Table - best surf conditions forecast for Anaehoomalu Bay_A-Bay over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s on the cards for the next couple of weeks.
To be straight with you, it’s going to be a long, quiet stretch. We’re looking at a solid run of days with no real surf on offer, starting right now and lasting all the way through to the end of July. That’s a full ten-day gap where you’re better off leaving the boards in the car. The water is sitting at 80°, which is about what you’d expect for this time of year, nothing unusual there.
The first real chance of a wave to paddle for comes on Thursday, the 30th of July. Anaehoomalu Bay (A-Bay) is the only spot in the mix. It’s a reef and point setup, consistent, and it needs the swell from the WNW which is exactly what we get. Thursday morning shows a tiny 0.3ft swell from the SW with a very long 19-second period, but the wind is light cross-onshore, so it’s not clean. The combined energy is weak at 14. Not worth wetting the wetsuit.
Thursday afternoon, the 30th of July, is the only true standout in this whole forecast. The wind goes glassy calm, the swell bumps up to 1.0ft from the SW, still with a very long 18-second period. The combined energy climbs to 49, which is still weak but at least there’s some pulse. That long period groundswell means the sets will be slow and the waves will be fat, but with glassy conditions and that size, the reef at A-Bay might offer up a few clean, cruisy rides. It’s the best on offer, but it’s still a very small day.
After that, the surf drops away again. Friday the 31st of July is flat. Saturday the 1st of August morning, a tiny 0.3ft from the SW with a short 7-second period and messy cross-shore winds – combined energy at just 2. Forget it. Sunday the 2nd of August afternoon shows a little 1.0ft bump from the SW with a 13-second period and a combined energy of 48, but it’s cross-onshore and not clean. Monday the 3rd of August and Tuesday the 4th of August are more of the same – tiny 0.7ft swell from the WNW, weak energy in the teens, and nothing to get excited about, even though Tuesday afternoon goes glassy again.
Overall, it’s a pretty barren outlook. If you’re desperate for a session, that Thursday afternoon, the 30th of July, is your only hope, and even then, it’s for the longboard or the foil. It’s the kind of quiet spell that happens in this area, so don’t get too down.
Rusty.
Short Range ForecastSome drizzle, heaviest during Tue afternoon. Warm (max 28°C on Mon morning, min 25°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 28°C on Thu morning, min 24°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | |||||||||||||||
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) | WNW 12 | WNW 12 | WNW 12 | W 11 | NE 7 | SSW 26 | SSW 24 | SSW 23 | SSW 22 | SSW 20 | SSW 20 | SSW 18 | NE 7 | NNE 7 | NE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 27 | 26 | 13 | 9 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | glassy | glassy | on | glassy | glassy | cross-on | glassy | cross | cross-on | glassy | cross-off | cross | cross | cross | cross | glassy | cross | cross | cross | cross-off |
High Tide | 9:17AM0.55m | 7:39PM0.48m | 10:31AM0.59m | 8:03PM0.40m | 11:40AM0.63m | 12:37PM0.67m | 11:10PM0.29m | 1:23PM0.71m | 00:41AM0.28m | 2:04PM0.75m | 1:37AM0.29m | 2:40PM0.78m | 2:19AM0.31m | ||||||||
Low Tide | 2:54PM0.37m | 2:45AM0.13m | 5:19PM0.38m | 3:25AM0.14m | 4:16AM0.14m | 8:51PM0.28m | 5:15AM0.14m | 9:13PM0.24m | 6:12AM0.12m | 9:35PM0.21m | 7:02AM0.09m | 9:58PM0.18m | |||||||||
 | |  | |  |  | | | | | | | | | | | | | | | | |
 | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — |
 | — | 7:05 | — | — | 7:04 | — | — | 7:04 | — | — | 7:04 | — | — | 7:02 | — | — | 7:02 | — | — | 7:02 | — |
mm | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 28 | 26 | 28 | 27 | 26 | 27 | 28 | 26 | 28 | 28 | 26 | 28 | 28 | 26 | 27 | 28 | 26 | 26 | 27 | 25 |
Feels °C | 30 | 30 | 29 | 31 | 30 | 29 | 29 | 30 | 29 | 29 | 30 | 28 | 28 | 28 | 26 | 27 | 29 | 28 | 27 | 28 | 26 |
Swell 1 Height (m) Direction Period (s) | NNE 7 | NNE 5 | NNE 7 | NE 7 | NE 7 | NE 7 | SSW 24 | NE 6 | NE 6 | NE 6 | NE 6 | NE 6 | NE 7 | NNE 7 | NE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 |
| kJ | 31 | 14 | 33 | 37 | 54 | 38 | 55 | 36 | 31 | 40 | 62 | 34 | 67 | 96 | 84 | 106 | 126 | 161 | 133 | 133 | 95 |
Swell 2 Height (m) Direction Period (s) | WNW 12 | NNE 7 | WNW 12 | SSW 11 | SSW 12 | SSW 12 | SSW 16 | SSW 23 | SSW 22 | SSW 20 | SSW 20 | SSW 18 | SSW 18 | SSW 17 | SSW 20 | SSW 16 | SSW 18 | SSW 18 | SSW 16 | SSW 16 | ENE 15 |
| kJ | 27 | 36 | 13 | 12 | 14 | 13 | 25 | 106 | 91 | 78 | 75 | 66 | 61 | 59 | 76 | 50 | 102 | 102 | 86 | 84 | 77 |
Swell 3 Height (m) Direction Period (s) | ENE 7 | WNW 12 | SSW 13 | W 11 | SSW 16 | SSW 26 | SSW 11 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | ENE 7 | SSW 13 | SSW 21 | SSW 16 | SSW 19 | E 17 | E 17 | E 16 | E 16 | SSW 16 |
| kJ | 5 | 26 | 17 | 9 | 26 | 65 | 11 | 30 | 58 | 25 | 25 | 5 | 17 | 45 | 25 | 73 | 23 | 49 | 45 | 43 | 48 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | NNE 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | 19 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 94 | 50 | 34 | 87 | 96 | 13 | 13 | 38 | 34 | 96 | 91 | 34 | 91 | 96 | 34 | 21 | 96 | 21 | 96 | 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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