Kua Bay Surf Break

Lat Long: 19.81° N 156.01° W

Kua Bay Surf Forecast and Surf Report

Issued: 1 am 01 Sep 2026 (local time)

Forecast update in  hr  min

Today's Kua Bay sea temperature is
27.7°C
1.0° 

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 1 Sep 2026:

  • Best quality surf: Saturday 5 Sep, 5PM (local time) - 2.5ft (0.8m), 11s period, SW swell with cross-offshore winds.
  • Most powerful swell: Tuesday 8 Sep, 8AM (local time) - 3ft (0.9m), 12s period, WSW swell with 226 kJ wave energy.
  • Next surfable swell (1★+): Saturday 5 Sep, 5PM (local time) - 2.5ft (0.8m), 11s period with SW swell.

Best Forecast Surf Conditions for Kua Bay this week:

The surf forecast for Kua Bay over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Sep 05) at 5PM. The primary swell is predicted to be 0.8m and 11s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Kua Bay in the next 16 days are 0.9m 12s and forecast to arrive on Tuesday (Sep 08) at 8AM. 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 TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 5PM (Sat 5th Sep)2.5ft (0.8m) 11s
Best Surf 5PM (Sat 5th Sep)2.5ft (0.8m) 11s
Most Powerful 8AM (Tue 8th Sep)3ft (0.9m) 12s

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


The Lowdown

Alright folks, Rusty here. Let me tell you what this 16-day stretch looks like for Kua Bay. It’s not a great run, to be honest. We’re looking at a long stretch of small, weak surf with only a few windows that might get you a couple of so-so waves. The water is sitting at 82°, which is about 2° warmer than average for this time of year, so it’s a touch on the balmy side.

The first bit of action doesn’t show up until the 5th of September. Saturday afternoon brings a small 3ft swell from the SW with a period of 11 seconds. The combined energy is 177 (moderate), and with a light cross-offshore breeze, it’ll be clean. But it’s pretty ordinary, just enough to get wet.

Sunday the 6th and Monday the 7th have similar 2-3ft SW swell, but the wind is messy – cross-shore or cross-on. Monday afternoon cleans up with a cross-off breeze again, but it’s still small.

The 8th of September sees a bump in size to 3-4ft from the WSW, with a period of 12 seconds. The energy jumps to 274-333 (moderate), but the wind is cross or cross-on, so it’s going to be a bit choppy. It’s a marginal call.

The 9th carries on with similar 3-3ft WSW swell, still a bit cross or cross-on, nothing to get excited about.

Thursday the 10th has a strange one: a 1.0ft swell from the SW with a very long 18-second period, giving 140 energy (moderate). The afternoon breeze is cross-off, so it’ll be clean, but that’s a tiny wave for a long period. It’s likely to be a bit fat and slow at the beach.

Then we get a blank. Nothing worth riding on the 11th, 12th, or the morning of the 13th.

The real standout, if you can call it that, is the 13th of September. Sunday morning and afternoon bring a solid 5ft to 6ft swell from the SW and WSW, with a period of 11-12 seconds. The combined energy is a strong 674-800 (strong). The winds are light, with a cross-on breeze in the afternoon. This is the biggest swell of the outlook, but it’s pushing over 5ft, so it’s getting into the intermediate range. The wind isn’t perfect, but it’s the best size on offer. The rest of the week after that drops off again into tiny, weak waves.

Honestly, there’s no classic session here. The 13th is the only one with any real push, and even then, the conditions are just okay. The long gaps between small swells are a drag. The forecasts can always change, but right now, it’s a waiting game.

This is Rusty, signing off.

Short Range Forecast

Mostly dry. Warm (max 29°C on Tue morning, min 26°C on Tue night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 5mm), mostly falling on Fri night. Warm (max 28°C on Fri morning, min 25°C on Fri night). Wind will be generally light.

Tuesday
1
Wednesday
2
Thursday
3
Friday
4
Saturday
5
Sunday
6
Monday
7
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
1
1
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)
0.2
W
12
0.9
NNE
6
0.2
W
11
0.2
W
11
0.2
W
10
0.2
W
10
0.1
SW
13
0.1
W
9
0.9
NE
6
1
NE
6
0.6
SSW
11
0.7
SSW
11
0.9
SW
12
0.8
SW
11
0.8
SW
11
0.8
SW
11
0.8
SW
11
0.8
SW
11
0.7
SW
11
0.7
WSW
11
0.8
WSW
12
Wave Graph
Metric surfscale
Energy kJ
11
0
10
9
8
8
7
2
0
0
0
0
0
177
142
142
140
140
117
101
150
Wind (km/h)
10
NNW
5
SSW
5
S
10
W
5
WSW
5
NE
5
NW
5
NNE
5
E
10
NNW
5
N
0
WSW
10
WSW
10
SSW
0
NW
5
WSW
10
SW
5
NW
10
W
15
SSW
5
WSW
Wind State
on
cross-off
glassy
cross-on
glassy
cross
glassy
cross-on
glassy
on
glassy
glassy
cross
cross-off
glassy
cross
cross
on
cross-on
cross-off
cross
High Tide
5:58PM0.47m
7:43AM0.68m
6:27PM0.39m
8:58AM0.68m
6:59PM0.32m
10:26AM0.70m
9:25PM0.26m
11:46AM0.74m
11:54PM0.28m
12:47PM0.78m
1:07AM0.33m
1:36PM0.81m
1:57AM0.40m
Low Tide
1:00PM0.27m
00:21AM0.07m
2:28PM0.32m
00:59AM0.09m
5:04PM0.31m
1:54AM0.12m
7:14PM0.25m
3:19AM0.14m
7:46PM0.20m
4:58AM0.14m
8:14PM0.15m
6:18AM0.11m
8:41PM0.12m
clear
clear
clear
clear
part cloud
clear
clear
part cloud
part cloud
clear
part cloud
rain showers
part cloud
rain showers
rain showers
part cloud
thunderstorm
thunderstorm
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:07
6:07
6:07
6:09
6:09
6:09
6:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:38
6:37
6:37
6:36
6:35
6:34
6:34
 mm
1
1
1
1
1
Temp °C
29
28
27
28
27
27
28
28
27
28
27
26
28
27
27
28
27
27
28
28
27
Feels °C
31
31
31
31
30
30
31
31
30
30
30
30
30
28
31
32
30
31
31
30
29
  • 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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