Anaehoomalu Bay_A-Bay Surf Break

Lat Long: 19.92° N 155.89° W

Anaehoomalu Bay_A-Bay Surf Forecast and Surf Report

Issued: 1 am 13 Aug 2026 (local time)

Forecast update in  hr  min

Today's Anaehoomalu Bay_A-Bay sea temperature is
27.4° C
0.9° 

Anaehoomalu Bay_A-Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Anaehoomalu Bay_A-Bay surf forecast from 13 Aug 2026:

  • Best quality surf: Wednesday 19 Aug, 5PM (local time) - 1.5ft (0.4m), 12s period, WNW swell with glassy winds.
  • Most powerful swell: Tuesday 18 Aug, 11PM (local time) - 1.5ft (0.4m), 13s period, WNW swell with 57 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 19 Aug, 5PM (local time) - 1.5ft (0.4m), 12s period with WNW 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 5PM. The primary swell is predicted to be 0.4m and 12s 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 13s and forecast to arrive on Tuesday (Aug 18) at 11PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 8s period and expected on Saturday (Aug 15) at 11AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 5PM (Wed 19th Aug)1.5ft (0.4m) 12s
Best Surf 5PM (Wed 19th Aug)1.5ft (0.4m) 12s
Most Powerful11PM (Tue 18th Aug)1.5ft (0.4m) 13s

Table - best surf conditions forecast for Anaehoomalu Bay_A-Bay over the next 16 days.


The Lowdown

Alright, Rusty here. Let’s have a look at what we’ve got cooking.

To be straight with you, the next 16 days are pretty flat. We’re looking at a long stretch of small, weak swell and mostly poor conditions. For the first week or so, the waves just aren’t there – we’re talking about ankle to knee-high dribble at best. The combo energy is sitting in the doldrums, often under 100 (like 28), which tells you the ocean is having a nap.

Anaehoomalu Bay (a reef and point setup) is the only break on the cards here. It’s a consistent spot, fairly exposed to the WNW swell, and it needs that direction. But for most of this period, the swell is tiny – 0.7ft to 1ft – and while the period can be decent (11 to 17 seconds) at times, there's just no power behind it.

There’s a brief flicker of life around Thursday the 20th on the afternoon. The swell direction shifts to SW with a long 18-second period, and the combined energy climbs to 70. Winds go glassy calm. It’s still only 1ft, so it’s not going to be pumping, but those conditions (glassy, clean) will make the most of what’s there for a slow, gentle session. If you are desperate for a paddle, that’s your best bet. The water temp is about average for the time of year, so no nasty surprises there.

The rest of the run is mostly cross-onshore breezes or flat calm, with wave energy bouncing between 8 and 82. Nothing stands out as a true standout. It’s one of those blank runs for the area – more normal than you’d hope. Swell just isn't making it in with any purpose.

Keep your eye on the Friday the 28th morning, where we see a WNW swell with 16-second period and energy of 82. That’s the most promising signal, but it’s still small at 1ft and cross-onshore. It’s a long way out, so don't hold your breath.

Honestly, for the next two weeks, leave the boards in the car and maybe bring a snorkel. The ocean is taking a break.

Rusty

Short Range Forecast

Moderate rain (total 12mm), heaviest on Sat night. Warm (max 29°C on Thu morning, min 25°C on Thu night). Winds increasing (light winds from the NNE on Thu morning, strong winds from the ENE by Sat night).

Days 4-6 Weather Summary

Heavy rain (total 39mm), heaviest during Sun morning. Warm (max 30°C on Sun afternoon, min 26°C on Sun morning). Wind will be generally light.

Thursday
13
Friday
14
Saturday
15
Sunday
16
Monday
17
Tuesday
18
Wednesday
19
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.3
WNW
12
0.3
W
12
0.2
W
12
0.8
NNE
6
0.3
W
12
0.2
W
12
0.2
W
11
1.1
NE
8
0.3
WNW
13
0.3
WNW
13
0.4
WNW
12
0.3
WNW
12
0.3
WNW
11
0.3
WNW
11
0.3
WNW
11
0.3
WNW
11
0.3
W
13
0.4
WNW
13
0.4
WNW
12
0.4
WNW
12
0.3
SW
16
Wave Graph
Metric surfscale
Energy kJ
28
25
11
0
24
11
9
0
34
31
49
27
25
24
24
25
31
55
48
48
41
Wind (km/h)
20
NNE
20
NNE
10
NE
15
NNE
25
NNE
15
NE
20
NE
10
ENE
45
ENE
15
NNE
10
WSW
0
SSE
5
WNW
0
WNW
5
ENE
5
NNW
5
NNE
5
ENE
5
NW
5
WSW
5
ENE
Wind State
cross
cross
cross-off
cross
cross
cross-off
cross-off
cross-off
cross-off
cross
cross-on
glassy
on
glassy
cross-off
cross-on
glassy
glassy
glassy
glassy
glassy
High Tide
4:30PM0.83m
4:54AM0.53m
5:01PM0.75m
5:39AM0.57m
5:30PM0.66m
6:25AM0.59m
5:55PM0.57m
7:15AM0.60m
6:17PM0.49m
8:14AM0.60m
6:29PM0.41m
9:26AM0.60m
Low Tide
9:44AM0.06m
11:11PM0.08m
10:32AM0.11m
11:36PM0.08m
11:20AM0.18m
00:02AM0.08m
12:11PM0.25m
00:27AM0.10m
1:12PM0.31m
00:52AM0.12m
2:39PM0.36m
1:22AM0.14m
2:03AM0.16m
clear
clear
clear
clear
clear
clear
clear
clear
heavy rain
rain showers
clear
clear
rain showers
thunderstorm
rain showers
clear
rain showers
part cloud
part cloud
thunderstorm
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:03
6:03
6:03
6:03
6:03
6:03
6:03
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:52
6:52
6:52
6:51
6:50
6:50
6:49
 mm
12
31
1
4
1
2
2
1
Temp °C
29
29
27
28
29
28
29
29
28
28
30
28
28
28
27
28
28
27
27
27
26
Feels °C
30
29
28
28
29
29
29
32
31
31
33
32
33
33
32
32
33
31
31
31
31
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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