Kua Bay Surf Break

Lat Long: 19.81° N 156.01° W

Kua Bay Surf Forecast and Surf Report

Issued: 7 am 21 Jul 2026 (local time)

Forecast update in  hr  min

Today's Kua Bay sea temperature is
26.7° C
0.6° 

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


Kua Bay surf forecast from 21 Jul 2026:

  • Most powerful swell: Saturday 25 Jul, 8PM (local time) - 2ft (0.6m), 5s period, NNE swell with 15 kJ wave energy.

Best Forecast Surf Conditions for Kua Bay this week:

The most powerful waves expected at Kua Bay in the next 16 days are 0.6m 5s and forecast to arrive on Saturday (Jul 25) at 8PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 8s period and expected on Friday (Jul 24) at 11PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 8PM (Sat 25th Jul)2ft (0.6m) 5s

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


The Lowdown

Alright folks, Rusty here. Let’s have a look at what’s on the cards for the next couple of weeks.

To be honest, it’s a pretty slow start. We’re looking at a long stretch of very small, weak surf with hardly any energy behind it. The combined energy of all swells is basically zero for the first week and a half, so don’t bother waxing up just yet. There’s a gap of about ten days where there’s nothing worth paddling out for.

The first real hint of something surfable shows up on Saturday, the 1st of August, at Kua Bay. Even then, it’s small – around 2ft from the west. The swell period is a modest 11 seconds, so it’s not a groundswell, but it’s a start. The wind goes glassy in the afternoon, which is a major positive. The water temperature is sitting at 80°, which is pretty much normal for this time of year, so no surprises there.

Sunday morning, the 2nd of August, offers something similar. The swell is a touch smaller at around 2ft from the west, but the period stretches to 12 seconds, giving it a bit more shape. The wind is glassy again in the early session, which means clean conditions. The combined energy of all swells directed here is still weak (96), so don’t expect barrels, but it’s surfable. This is likely the best on offer in the whole window.

Kua Bay is a fairly consistent spot, so it tends to pick up whatever is around. The optimum swell direction is WNW, so that west swell we’re seeing is a reasonable match. Crowds are possible here, so you might have to share the water, but on a small day like this, it’ll be more spread out. For beginners, this size is fine, but it’s not a wave to write home about.

Heading into the second week, the swell drops off again. The 3rd and 4th of August see the swell shrinking back to around 2ft and then 1ft, with the period dropping to 12 seconds and the energy fading. The wind turns cross or cross-on, and the conditions get a bit junkier. It’s not worth a special trip.

So, the standout is really the Sunday morning session on the 2nd of August. It’s not a big swell, but with glassy conditions and a clean surface, it’s your best bet in a quiet period. Everything else is flat or too weak to bother with.

Rusty.

Short Range Forecast

Light rain (total 3mm), mostly falling on Tue afternoon. Warm (max 27°C on Tue morning, min 25°C on Wed night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 27°C on Fri morning, min 25°C on Fri night). Wind will be generally light.

Tuesday
21
Wednesday
22
Thursday
23
Friday
24
Saturday
25
Sunday
26
Monday
27
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
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.2
W
11
0.6
NE
7
0.2
SSW
26
0.2
SSW
24
0.3
SSW
23
0.3
SSW
22
0.3
SSW
20
0.3
SSW
20
0.8
NE
7
0.8
NNE
7
0.9
NNE
6
0.9
NNE
8
0.9
NNE
8
1
NNE
8
0.9
NNE
8
1
NNE
8
1
NNE
8
0.9
NNE
8
0.3
SW
9
0.9
NNE
8
0.5
E
14
Wave Graph
Metric surfscale
Energy kJ
9
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
12
0
0
Wind (km/h)
10
WSW
10
WSW
5
ENE
10
WNW
5
SW
5
NNE
10
SW
5
WSW
5
NNW
10
W
5
NNW
5
NNE
5
WSW
5
NW
5
ENE
10
NW
10
SSW
10
NE
5
WNW
5
SW
0
ENE
Wind State
cross-on
cross-on
glassy
cross-on
glassy
glassy
cross
glassy
glassy
cross-on
glassy
cross
cross
on
glassy
on
cross-off
cross
cross-on
cross
glassy
High Tide
10:31AM0.59m
8:18PM0.40m
11:39AM0.63m
9:15PM0.33m
12:37PM0.67m
11:22PM0.29m
1:25PM0.71m
00:50AM0.29m
2:06PM0.75m
1:45AM0.30m
2:43PM0.78m
2:27AM0.32m
3:16PM0.81m
3:05AM0.34m
Low Tide
5:16PM0.38m
3:30AM0.14m
7:54PM0.33m
4:20AM0.14m
8:43PM0.28m
5:20AM0.14m
9:10PM0.23m
6:17AM0.12m
9:35PM0.20m
7:07AM0.10m
9:59PM0.18m
7:51AM0.07m
10:24PM0.16m
part cloud
rain showers
part cloud
clear
part cloud
rain showers
part cloud
part cloud
clear
clear
part cloud
clear
clear
part cloud
clear
clear
clear
clear
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:54
5:56
5:56
5:56
5:56
5:56
5:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:05
7:04
7:04
7:04
7:02
7:02
7:01
 mm
1
2
Temp °C
27
27
26
27
26
26
27
27
26
27
27
26
27
27
26
27
27
26
26
26
25
Feels °C
31
28
29
30
29
29
30
30
30
29
29
28
30
30
27
27
28
29
28
29
28
  • Map Icons:
  • Break
  • 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 Kua Bay Surf forecast

The above surf forecast table for Kua Bay provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Kua Bay can be found by selecting the local surf guide option on the grey menu. Our Kua 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 (Kua 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 Kua 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.

Kua Bay is 97 km (60 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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