Surf Forecasts:
Anaehoomalu Bay_A-Bay surf forecast from 11 Sep 2026:
- Best quality surf: Tuesday 15 Sep, 5AM (local time) - 1ft (0.3m), 21s period, SW swell with glassy winds.
- Most powerful swell: Wednesday 16 Sep, 2PM (local time) - 1.5ft (0.4m), 18s period, SW swell with 109 kJ wave energy.
- Next surfable swell (1★+): Tuesday 15 Sep, 5AM (local time) - 1ft (0.3m), 21s 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 Tuesday (Sep 15) at 5AM. The primary swell is predicted to be 0.3m and 21s 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 0.4m 18s and forecast to arrive on Wednesday (Sep 16) at 2PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 8s period and expected on Thursday (Sep 17) at 2PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Tue 15th Sep) | 1ft (0.3m) 21s |
| Best Surf | 5AM (Tue 15th Sep) | 1ft (0.3m) 21s |
| Most Powerful | 2PM (Wed 16th Sep) | 1.5ft (0.4m) 18s |
Table - best surf conditions forecast for Anaehoomalu Bay_A-Bay over the next 16 days.
The Lowdown
Alright, Rusty here. Let's be honest, looking at the window for Anaehoomalu Bay (A-Bay), this reef and point setup is in for a very quiet spell. There are no real standouts on offer. The forecast is basically a flat spell for the next week and a half, with only a couple of tiny, lackluster pulses on the horizon. The water is sitting at a warm 82°, which is about a degree and a half warmer than average for this time of year.
From now until around the 18th of September, it's mostly a bust. You're looking at days of zero swell and glassy, empty water. A tiny 1.0ft windswell shows up on Friday the 13th afternoon, with a short period of 4 seconds, but it's weak and not really worth the paddle. The wind on that Friday is glassy, which is a positive for the conditions, but the swell is just too small and weak to do anything with. We then hit a gap from the 14th right through to the 17th with barely a ripple, and what there is is usually a cross-onshore breeze.
There is a slight change on Friday, September 18th. The morning brings a 1ft south-west swell with a very long 18-second period. This is a long-period groundswell, which can be good for a point break like A-Bay. The problem is the wind is onshore from the WNW, which will mess up the surface, and the height is tiny. Not the combo we want. That afternoon and the following days drop right back off into the pathetic zone.
The only other pulse worth mentioning comes right at the very end of the window. On Saturday, September 26th, the afternoon has another 1ft west swell with a 13-second period. The wind goes glassy in the afternoon, so the conditions will be clean if that tiny swell shows up. It's still only surfable but very ordinary.
So, the bottom line: don't get your hopes up. This is a long stretch of flatness. The 18th is the one day with a bit of energy and a long period, but the onshore wind is a killer. The 26th is the other glimmer, clean but tiny. For a spot as consistent as A-Bay, this is a poor run. Keep an eye on it, forecasts change, but right now, the board stays in the bag.
Rusty
Short Range ForecastMostly dry. Warm (max 27°C on Fri morning, min 25°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 29°C on Wed morning, min 26°C on Mon morning). Wind will be generally light. | ||||||||||||||||||||
Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | |||||||||||||||
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) | ENE 11 | SW 9 | SW 15 | SW 15 | SW 14 | SW 14 | NNE 9 | W 11 | W 11 | W 10 | NNE 4 | SSW 21 | WSW 9 | SW 19 | SW 19 | SW 18 | SW 8 | SW 17 | W 8 | SW 16 | SW 17 |
Wave Graph  | |||||||||||||||||||||
 kJ | 0 | 13 | 0 | 0 | 29 | 29 | 0 | 10 | 9 | 8 | 15 | 0 | 8 | 0 | 0 | 0 | 3 | 0 | 1 | 0 | 0 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | glassy | on | on | glassy | on | glassy | cross-off | cross-on | glassy | glassy | on | glassy | cross-off | cross-on | cross | glassy | cross-on | glassy | cross-off |
High Tide | 3:54PM0.69m | 4:30AM0.66m | 4:23PM0.62m | 5:07AM0.69m | 4:49PM0.54m | 5:46AM0.70m | 5:13PM0.47m | 6:28AM0.68m | 5:32PM0.40m | 7:17AM0.65m | 5:42PM0.35m | 8:22AM0.62m | |||||||||
Low Tide | 9:44AM0.11m | 10:13PM0.06m | 10:31AM0.15m | 10:36PM0.06m | 11:17AM0.20m | 10:58PM0.07m | 12:07PM0.24m | 11:20PM0.09m | 1:05PM0.29m | 11:43PM0.12m | 2:31PM0.32m | 00:10AM0.14m | 00:45AM0.18m | ||||||||
 |  |  | | |  | | | | | | | | | | | | | |  |  | |
 | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — |
 | — | 6:30 | — | — | 6:29 | — | — | 6:28 | — | — | 6:27 | — | — | 6:25 | — | — | 6:24 | — | — | 6:23 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 |
Temp °C | 27 | 27 | 26 | 27 | 27 | 26 | 27 | 27 | 26 | 28 | 28 | 26 | 28 | 28 | 27 | 29 | 29 | 27 | 29 | 29 | 27 |
Feels °C | 31 | 31 | 30 | 30 | 30 | 31 | 30 | 30 | 29 | 30 | 30 | 30 | 31 | 31 | 31 | 32 | 33 | 31 | 33 | 33 | 31 |
Swell 1 Height (m) Direction Period (s) | NE 4 | NNE 8 | NNE 8 | NNE 8 | NNE 9 | NNE 9 | NNE 9 | NNE 9 | NNE 8 | SW 14 | NNE 8 | NNE 8 | NNE 8 | NNE 5 | NNE 5 | NE 5 | NNE 6 | NNE 6 | NE 8 | NE 7 | NNE 5 |
| kJ | 10 | 51 | 50 | 36 | 67 | 68 | 68 | 50 | 64 | 7 | 26 | 36 | 54 | 26 | 17 | 27 | 59 | 44 | 101 | 91 | 25 |
Swell 2 Height (m) Direction Period (s) | NNE 8 | SW 15 | SW 15 | SW 15 | SW 14 | NE 4 | SSW 12 | SSW 15 | SSW 14 | W 10 | SSW 22 | SSW 21 | SW 20 | NNE 8 | NNE 8 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 17 |
| kJ | 26 | 57 | 57 | 60 | 29 | 7 | 15 | 21 | 20 | 8 | 46 | 45 | 98 | 23 | 22 | 79 | 152 | 75 | 65 | 64 | 148 |
Swell 3 Height (m) Direction Period (s) | ENE 11 | SW 9 | ENE 10 | ENE 10 | WSW 8 | SW 14 | SSW 15 | W 11 | W 11 | SW 9 | SSW 14 | SSW 13 | WSW 9 | SW 19 | SW 19 | NNE 8 | SW 8 | NE 8 | W 8 | SSW 18 | NE 8 |
| kJ | 24 | 13 | 20 | 9 | 7 | 29 | 22 | 9 | 9 | 3 | 18 | 17 | 8 | 96 | 94 | 11 | 3 | 16 | 1 | 34 | 17 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | NE 4 | NNE 4 | — | NNE 8 | NNE 4 | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | 2 | 10 | — | 61 | 15 | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 91 | 13 | 21 | 91 | 91 | 94 | 91 | 94 | 30 | 94 | 21 | 30 | 13 | 13 | 13 | 13 | 11 | 13 | 91 | 13 | 11 |
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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