Surf Forecasts:
Anaehoomalu Bay_A-Bay surf forecast from 2 Sep 2026:
- Best quality surf: Tuesday 8 Sep, 8PM (local time) - 5.5ft (1.7m), 14s period, WSW swell with glassy winds.
- Most powerful swell: Tuesday 8 Sep, 5PM (local time) - 5.5ft (1.7m), 14s period, WSW swell with 1,068 kJ wave energy.
- Next surfable swell (1★+): Sunday 6 Sep, 2AM (local time) - 2.5ft (0.7m), 11s 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 Sunday (Sep 06) at 2AM. The primary swell is predicted to be 0.7m and 11s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Anaehoomalu Bay_A-Bay in the next 16 days are 1.7m 14s and forecast to arrive on Tuesday (Sep 08) at 5PM. Winds are predicted to be cross-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 Wednesday (Sep 02) at 11AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Sun 6th Sep) | 2.5ft (0.7m) 11s |
| Best Surf | 8PM (Tue 8th Sep) | 5.5ft (1.7m) 14s |
| Most Powerful | 5PM (Tue 8th Sep) | 5.5ft (1.7m) 14s |
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 offer for Anaehoomalu Bay.
Right off the bat, I gotta be straight with you – it’s looking lean for the next week or so. We’re kicking off with a long dry spell where there’s just nothing doing. From September 1st right through to the morning of September 6th, the ocean is basically asleep. You’ll see a lot of zeros in the energy department. That’s a solid five days of flatness, so don't bother rushing down there.
Finally, on the afternoon of Sunday the 6th, a little pulse of life shows up. The swell is tiny at 2ft from the SW, with a period of 10 seconds. The wave energy is very weak (108), and the water temperature is 82° – that’s a touch warmer than usual for this time of year, about a degree above normal, but that’s about all the excitement we get. It’s glassy, which is a major positive for the surface, but honestly, that’s about the only thing going for it. It’s surfable, but very ordinary.
The real tease comes on the 8th of September. Tuesday morning brings a jump in swell height to 4ft from the WSW with a very long period of 14 seconds, and the combined energy hits a solid moderate 522. By Tuesday afternoon it builds further to 6ft from the same direction, the period stays long, and the energy jumps into strong territory at 1068. That’s the standout of this whole outlook. That long period groundswell is going to have some real punch, and it’s the one window that looks genuinely interesting. The catch? The wind is onshore or cross-onshore from the West, which will mess with the surface. This is a reef and point setup at Anaehoomalu Bay (A-Bay), and the optimum direction is WNW, which the WSW swell is close-ish to. If you’re an intermediate or better, that Tuesday afternoon window could offer some decent, powerful lines, but don’t expect perfection in the conditions. The opening few days of the second week still show some swell energy, but mostly in the 2ft to 4ft range, with some glassy moments on the 9th afternoon, but nothing that hits the same peak as that Tuesday.
Overall, the 8th of September is the only real highlight in this 16-day outlook. Everything else is either flat or just small and average. For a spot that’s fairly consistent, this is a quiet run, but it’s worth keeping an eye on that Tuesday.
- Rusty
Short Range ForecastMostly dry. Warm (max 29°C on Tue afternoon, min 25°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummarySome drizzle, heaviest during Sun night. Warm (max 29°C on Sat morning, min 25°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Tue 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | ||||||||||||||
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) | NE 8 | W 11 | W 11 | W 10 | W 10 | W 9 | W 9 | W 9 | S 13 | SSW 11 | SSW 11 | SW 11 | SW 12 | SW 11 | SW 11 | SW 10 | SW 11 | SW 10 | WSW 11 | WSW 12 |
Wave Graph | ||||||||||||||||||||
0 | 10 | 9 | 8 | 8 | 2 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 110 | 114 | 108 | 140 | 108 | 154 | 226 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | glassy | cross-on | cross | cross-off | cross | cross-off | cross-off | cross | glassy | cross-off | cross-on | cross-on | glassy | cross-on | glassy | glassy | on | cross-on | on |
High Tide | 5:49PM0.47m | 7:40AM0.67m | 6:14PM0.39m | 8:57AM0.68m | 6:22PM0.32m | 10:26AM0.70m | 9:07PM0.26m | 11:45AM0.74m | 11:48PM0.27m | 12:45PM0.78m | 1:01AM0.33m | 1:33PM0.81m | 1:51AM0.40m | |||||||
Low Tide | 00:15AM0.08m | 2:26PM0.33m | 00:53AM0.09m | 5:34PM0.32m | 1:47AM0.12m | 7:35PM0.26m | 3:13AM0.14m | 7:49PM0.20m | 4:53AM0.13m | 8:13PM0.16m | 6:12AM0.11m | 8:38PM0.12m | ||||||||
— | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — | |
6:37 | — | — | 6:37 | — | — | 6:37 | — | — | 6:36 | — | — | 6:35 | — | — | 6:34 | — | — | 6:32 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | 1 | — |
Temp °C | 29 | 27 | 28 | 28 | 27 | 28 | 28 | 26 | 28 | 28 | 26 | 29 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 |
Feels °C | 32 | 30 | 31 | 32 | 29 | 30 | 30 | 27 | 30 | 30 | 29 | 31 | 30 | 31 | 31 | 31 | 31 | 31 | 31 | 30 |
Swell 1 Height (m) Direction Period (s) | NNE 5 | NNE 8 | NE 8 | NE 7 | SSW 15 | NE 7 | NE 7 | S 13 | NE 6 | NNE 6 | NNE 7 | SW 11 | SW 12 | SW 11 | SW 11 | SW 10 | SW 11 | SW 10 | WSW 11 | NE 11 |
32 | 109 | 125 | 121 | 42 | 73 | 114 | 31 | 54 | 65 | 61 | 185 | 224 | 110 | 114 | 108 | 140 | 108 | 154 | 191 | |
Swell 2 Height (m) Direction Period (s) | NE 8 | SSW 16 | SSW 16 | SSW 15 | W 10 | S 14 | S 14 | E 14 | S 13 | SSW 11 | SSW 11 | NNE 6 | NNE 6 | NNE 7 | NNE 7 | NNE 7 | ENE 12 | ENE 12 | NE 12 | WSW 12 |
48 | 51 | 50 | 45 | 8 | 16 | 16 | 16 | 81 | 71 | 109 | 34 | 52 | 41 | 57 | 42 | 167 | 119 | 140 | 226 | |
Swell 3 Height (m) Direction Period (s) | SSW 18 | W 11 | W 11 | W 10 | SW 13 | W 9 | W 9 | W 9 | E 14 | E 14 | E 14 | ENE 13 | ENE 13 | E 13 | ENE 13 | ENE 13 | NNE 6 | NNE 7 | NNE 7 | SSW 16 |
31 | 10 | 9 | 8 | 7 | 2 | 2 | 2 | 15 | 16 | 33 | 59 | 60 | 86 | 93 | 125 | 23 | 30 | 29 | 81 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | NE 8 | — | — | NE 6 | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | 94 | — | — | 64 | — | — | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 51 | 21 | 99 | 21 | 21 | 99 | 21 | 21 | 96 | 13 | 13 | 13 | 11 | 0 | 16 | 0 | 0 | 16 | 13 | 13 |
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.











