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, 8AM (local time) - 1.5ft (0.5m), 11s period, WNW swell with 68 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 8AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 7s period and expected on Monday (Aug 24) 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 | 8AM (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 have a look at what’s coming up for us.
Right off the bat, I gotta be straight with you – this outlook is a bit of a bummer. We’ve got a long, quiet spell ahead for Anaehoomalu Bay (A-Bay). For the next week and a half, the ocean is basically taking a nap. From now right through to the 25th of August, the surf is flat to tiny, with most days showing wave heights at or below 2 ft. The combined swell energy is weak, often sitting in the double digits (like 25 and 39), and a lot of the time it's marked as "poor surf conditions." There are a few moments of glassy conditions, like the afternoon of the 18th and the 22nd, but there just isn’t any swell to make it worthwhile. You’d be better off kicking back with a cold one.
We finally see a bit of a pulse kick in around Wednesday the 26th. The swell picks up to 2 ft – 3 ft from the SW (combined energy of 121 to 147 – moderate). The water temp is sitting at a comfortable 81°F, which is pretty normal for this time of year. Morning on the 26th could be your best bet if you’re desperate for a paddle, with glassy conditions and a clean-ish surface. But honestly, the waves are still "very ordinary". The period on this little pulse hits 11 seconds, so there's a touch of groundswell in there, but the heights are just too small to get excited about.
The standout window, if I have to pick one, is the afternoon of the 27th through the afternoon of the 29th. We see the swell holding around 2 ft to 2 ft from the WSW (combined energy between 85 and 99). On Friday the 28th and Saturday the 29th, we get some glassy afternoons. It’s tiny, but if you've got a longboard and the itch, you might find a crumbly little something. This is not for the shortboard crew. For beginners, this size is totally fine, but the lack of power means you’ll be working for every ride. It’s a reef and point setup, so it can handle these small, longer-period swells (11 seconds) okay, but it’s nothing special. There’s always a chance of a few people out (crowds listed as "sometimes"), but on these tiny days, it’ll be quiet.
The 30th and 31st see the swell fade back down to 0.7 ft – 1 ft, and that’s pretty much it. The first couple of days of September look similar – a little bump up to 2 ft and 3 ft on September 2nd, but it’s onshore wind (WNW) and the quality is shot, with the data saying "poor surf conditions." That Wednesday afternoon has a combined energy of 173 which is moderate, but the onshore wind will chop it up.
Honestly, for the next 16 days, there are no true standouts. The swell is just too small. If you’re a beginner, the glassy 2 ft days from the 27th to the 29th are the only ones worth a look. For everyone else, save your energy. The consistency of this zone is usually a bit better, so I’d say don’t give up, but this forecast is what it is.
Stay salty,
Rusty
Short Range ForecastMostly dry. Warm (max 28°C on Wed morning, min 26°C on Tue morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 29°C on Sat morning, min 25°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | |||||||||||||||
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 13 | WNW 12 | SW 16 | SW 16 | SW 18 | SW 17 | W 11 | WNW 10 | WNW 10 | W 10 | W 10 | W 10 | WNW 10 | SW 15 | WNW 10 | WNW 10 | NE 7 | W 9 | ENE 7 |
Wave Graph | |||||||||||||||||||||
25 | 25 | 33 | 48 | 42 | 41 | 49 | 47 | 20 | 36 | 33 | 56 | 54 | 52 | 59 | 45 | 20 | 9 | 0 | 2 | 0 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | glassy | glassy | on | cross | glassy | on | cross-on | glassy | cross-on | cross-on | glassy | cross-on | glassy | glassy | cross | cross | cross-off | cross-off | glassy | glassy |
High Tide | 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 | 2:12PM0.75m | 2:09AM0.36m | |||||||||
Low Tide | 2:39PM0.36m | 1:22AM0.14m | 2:03AM0.16m | 3:10AM0.18m | 8:46PM0.25m | 8:47PM0.22m | 5:53AM0.15m | 9:01PM0.19m | 6:48AM0.12m | 9:18PM0.17m | |||||||||||
6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | |
— | 6:50 | — | — | 6:49 | — | — | 6:47 | — | — | 6:46 | — | — | 6:46 | — | — | 6:45 | — | — | 6:45 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 27 | 26 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 29 | 29 | 27 | 29 | 29 | 27 | 28 | 28 | 27 |
Feels °C | 30 | 30 | 31 | 31 | 31 | 31 | 32 | 32 | 32 | 31 | 31 | 32 | 32 | 32 | 29 | 30 | 31 | 28 | 31 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | NNE 5 | WNW 11 | NNE 5 | NNE 5 | WNW 12 | NNE 6 | NNE 6 | NNE 7 | NNE 7 | NNE 7 | NE 7 | NE 7 | NE 6 | NE 6 | WNW 10 | WNW 11 | NNE 6 | SSW 14 | NE 7 | NE 7 | NNE 6 |
9 | 25 | 9 | 8 | 28 | 22 | 17 | 32 | 31 | 29 | 44 | 46 | 52 | 75 | 59 | 45 | 77 | 20 | 37 | 132 | 33 | |
Swell 2 Height (m) Direction Period (s) | NE 8 | W 13 | WNW 13 | WNW 12 | NNE 6 | WNW 11 | SW 18 | W 11 | SW 16 | WNW 10 | WNW 10 | W 10 | W 10 | W 10 | SW 15 | SW 15 | WNW 10 | WNW 10 | N 6 | SSW 13 | ENE 7 |
14 | 14 | 33 | 48 | 8 | 25 | 49 | 21 | 69 | 36 | 33 | 56 | 54 | 52 | 36 | 34 | 20 | 9 | 20 | 17 | 37 | |
Swell 3 Height (m) Direction Period (s) | WNW 11 | ENE 7 | ENE 7 | NNE 7 | SW 16 | SW 16 | WNW 11 | SW 17 | W 11 | SW 16 | SW 16 | SW 16 | SW 15 | SW 16 | WSW 9 | WSW 9 | SSW 14 | SW 9 | SSW 14 | W 9 | SSW 12 |
25 | 5 | 5 | 5 | 42 | 41 | 24 | 47 | 20 | 69 | 65 | 64 | 37 | 63 | 9 | 8 | 21 | 3 | 19 | 2 | 30 | |
Wind waves Height (m) Direction Period (s) | — | NNE 5 | — | — | NE 5 | — | — | — | — | — | — | — | — | — | NE 6 | NNE 6 | — | NNE 6 | — | — | — |
— | 15 | — | — | 11 | — | — | — | — | — | — | — | — | — | 31 | 69 | — | 44 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 94 | 91 | 21 | 91 | 8 | 5 | 16 | 8 | 13 | 16 | 13 | 13 | 13 | 13 | 0 | 16 | 107 | 30 | 50 | 38 | 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.











