Surf Forecasts:
Anaehoomalu Bay_A-Bay surf forecast from 18 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 8PM (local time) - 1ft (0.3m), 16s period, SW swell with cross-offshore winds.
- Most powerful swell: Sunday 23 Aug, 2PM (local time) - 1.5ft (0.5m), 11s period, WNW swell with 73 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 8PM (local time) - 1ft (0.3m), 16s 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 Wednesday (Aug 19) at 8PM. The primary swell is predicted to be 0.3m and 16s period with a secondary swell of 0.3m and 12s. 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 0.5m 11s and forecast to arrive on Sunday (Aug 23) 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 0.9m 6s period and expected on Saturday (Aug 22) at 2PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Wed 19th Aug) | 1ft (0.3m) 16s |
| Best Surf | 8PM (Wed 19th Aug) | 1ft (0.3m) 16s |
| Most Powerful | 2PM (Sun 23rd Aug) | 1.5ft (0.5m) 11s |
Table - best surf conditions forecast for Anaehoomalu Bay_A-Bay over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's be real with you. The next couple of weeks are looking pretty grim for any real surf. We got a long stretch of tiny, weak waves and not much to get excited about. If you're desperate for a wave, you're gonna have to be patient.
Right now and for the next week and a half, it's all about ankle-biters. We're looking at waves around 1ft from the WNW. The energy is weak, with combined swell energy readings mostly in the 20s to 80s. There are some clean, glassy periods on Monday morning, but with waves that small, it's not worth paddling out unless you're on a longboard and just want to float. The water temp is a warm 81°, which is about normal for this time of year. There's a bit of a long-period swell on Thursday the 20th coming from the SW with an 18-second period, but the size is still only 1ft, so it's all show and no go.
The beginning of next week gets even smaller, dropping to about 0.3ft. There's almost no energy at all. It's a real flat spell. From the 24th through the 27th, we're looking at basically nothing. A few of these days have clean conditions with light offshore winds, but you could water-ski behind a rowboat and find more push. This is a normal dry spell for us.
Now, here's the one glimmer of hope. Mark your calendars for the afternoon of Friday, August 28th. The models are hinting at a pulse of SW groundswell that finally has some size to it. We're looking at a 4ft swell with a 12-second period, and the combined energy jumps up to 546. That's moderate wave energy, the first we've seen in a long time. The winds are forecast to be glassy, which will make it clean as a whistle.
This swell builds into Saturday morning, hitting 5ft from the WSW with the same strong energy reading of 546. It's still glassy. This is the standout of the whole period. The swell direction is a bit off the optimum for A-Bay, which prefers a more direct WNW, but this is the biggest, cleanest surf we'll see. Saturday afternoon stays solid at 5ft with the same strong energy (522) and those clean, glassy conditions.
After that, it fades fast. Sunday drops back to 3ft, and then we're back into the small stuff for the rest of the forecast at the beginning of September.
So, the call is simple. The surf is tiny and unrideable for the next ten days. Don't waste your time. But keep that window from Friday afternoon through Saturday open. It's not going to be epic, but it will be the best we get. For beginners, that 5ft swell on Saturday might be a bit much, but for the more experienced, it'll be the only time worth getting wet. Just about every other day, the setup looks more interesting for a kite surfer than a paddle surfer.
Stay patient, and I'll see you out there when the water's moving.
Rusty
Short Range ForecastMostly dry. 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 29°C on Sat morning, min 26°C on Thu morning). Wind will be generally light. | ||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | |||||||||||||||
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 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 13 | WNW 12 | WNW 12 | SW 16 | SW 18 | SW 17 | W 11 | W 10 | SW 16 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 12 | WNW 11 | WNW 10 |
Wave Graph | |||||||||||||||||||||
25 | 24 | 25 | 25 | 25 | 33 | 48 | 48 | 41 | 49 | 47 | 20 | 19 | 39 | 20 | 33 | 33 | 33 | 56 | 47 | 19 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | cross-off | cross-on | glassy | glassy | on | cross-on | glassy | on | cross-on | glassy | on | cross-on | glassy | cross-on | on | glassy | cross-on | cross | cross-off |
High Tide | 6:17PM0.49m | 8:14AM0.60m | 6:29PM0.41m | 9:26AM0.60m | 10:50AM0.61m | 12:03PM0.64m | 11:21PM0.26m | 12:57PM0.68m | 00:46AM0.28m | 1:38PM0.72m | 1:33AM0.32m | ||||||||||
Low Tide | 1:12PM0.31m | 00:52AM0.12m | 2:39PM0.36m | 1:22AM0.14m | 2:03AM0.16m | 3:10AM0.18m | 8:46PM0.25m | 8:47PM0.22m | 5:53AM0.15m | 9:01PM0.19m | |||||||||||
6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | |
— | 6:50 | — | — | 6:50 | — | — | 6:49 | — | — | 6:47 | — | — | 6:46 | — | — | 6:46 | — | — | 6:45 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 28 | 27 | 27 | 28 | 26 | 27 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 29 | 29 | 27 | 28 | 27 | 25 |
Feels °C | 32 | 33 | 31 | 30 | 31 | 29 | 30 | 31 | 31 | 31 | 31 | 32 | 31 | 31 | 31 | 32 | 32 | 31 | 31 | 30 | 25 |
Swell 1 Height (m) Direction Period (s) | NE 6 | NE 6 | NNE 5 | NNE 5 | NNE 5 | NNE 5 | NE 7 | WNW 12 | NNE 6 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NE 6 | NE 6 | NE 4 | NE 6 | WNW 10 | NNE 6 | WNW 11 | NNE 6 |
24 | 43 | 22 | 18 | 17 | 12 | 23 | 48 | 26 | 32 | 30 | 26 | 26 | 43 | 43 | 9 | 49 | 33 | 47 | 47 | 46 | |
Swell 2 Height (m) Direction Period (s) | NE 7 | WNW 11 | WNW 11 | NE 7 | WNW 11 | WNW 13 | WNW 12 | SSW 16 | WNW 11 | SW 18 | W 11 | SW 16 | SW 16 | W 10 | SW 16 | NE 6 | WNW 10 | SW 15 | WNW 12 | SW 14 | WNW 10 |
23 | 24 | 25 | 14 | 25 | 33 | 48 | 25 | 25 | 49 | 21 | 69 | 69 | 18 | 64 | 10 | 33 | 58 | 56 | 33 | 19 | |
Swell 3 Height (m) Direction Period (s) | WNW 11 | S 14 | ENE 8 | WNW 11 | ENE 7 | ENE 7 | NNE 7 | SW 19 | SW 16 | WNW 11 | SW 17 | W 11 | W 10 | SW 16 | WNW 10 | WNW 10 | SW 16 | WNW 14 | WNW 10 | SSW 16 | SSW 14 |
25 | 16 | 6 | 25 | 5 | 5 | 5 | 14 | 41 | 24 | 47 | 20 | 19 | 39 | 20 | 33 | 63 | 19 | 31 | 24 | 20 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | NNE 6 | — | — | — | — | — | — | — | — | — | NE 7 | — | NNE 6 | — |
— | — | — | — | — | — | — | 23 | — | — | — | — | — | — | — | — | — | 63 | — | 63 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 91 | 21 | 21 | 91 | 30 | 33 | 91 | 13 | 5 | 37 | 8 | 13 | 16 | 87 | 13 | 94 | 13 | 13 | 13 | 16 | 21 |
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.











