Kiholo Bay Surf Break

Lat Long: 19.86° N 155.93° W

Kiholo Bay Surf Forecast and Surf Report

Issued: 7 pm 15 Aug 2026 (local time)

Forecast update in  hr  min

Today's Kiholo Bay sea temperature is
27.4° C
0.8° 

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


Kiholo Bay surf forecast from 16 Aug 2026:

  • Best quality surf: Tuesday 18 Aug, 11PM (local time) - 1.5ft (0.4m), 13s 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★+): Tuesday 18 Aug, 11PM (local time) - 1.5ft (0.4m), 13s period with WNW swell.

Best Forecast Surf Conditions for Kiholo Bay this week:

The surf forecast for Kiholo Bay over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 18) at 11PM. The primary swell is predicted to be 0.4m and 13s period. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Kiholo 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 glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 8s period and expected on Sunday (Aug 16) at 2AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)11PM (Tue 18th Aug)1.5ft (0.4m) 13s
Best Surf11PM (Tue 18th Aug)1.5ft (0.4m) 13s
Most Powerful11PM (Tue 18th Aug)1.5ft (0.4m) 13s

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


The Lowdown

Alright, Rusty here. Let’s talk about Kiholo Bay. Honestly, the next couple of weeks are a real test of patience. We’ve got a long stretch of tiny, weak, and often messy conditions before a little window of something surfable opens up.

Looking at the whole 16-day run, it’s a grim start. From Sunday the 16th all the way through to Tuesday the 25th, it’s just “poor surf conditions” day after day. That’s a solid 10-day gap with nothing to get excited about. The swell is tiny, mostly around 1ft to 1ft from the WNW, with combined energy readings struggling in the 20s and 30s. That’s weak stuff. On top of that, we’ve got a few days with onshore wind and even a risk of thunderstorms early on. There are a few glassy moments on Monday afternoon and Tuesday afternoon, but even then, the waves are just too small to make it worth the paddle. It’s a flat spell, plain and simple.

Now, the first real glimmer of hope shows up on Wednesday the 26th. Wednesday morning we see a bump in swell height to 2ft from the WNW, with a period of 12 seconds, and the combined energy jumps to 111. That’s moderate wave energy starting to show up. The wind is cross-on in the morning, so it won’t be perfect, but by Wednesday afternoon we get glassy conditions with that same 2ft swell and energy at 114. The description changes to “surfable waves but very ordinary conditions”. It’s not going to be epic, but after a long dry spell, it’s something to paddle out for. The swell direction (WNW) lines up with the optimum for Kiholo Bay, so the break should handle it okay. The period is 12 seconds, which is decent, so there will be some shape to the waves. This is the standout of the whole outlook. It’s not going to be a classic session, but it’s the best we’ve got, and after that long flat stretch, a clean 2ft wave on a glassy afternoon feels like a gift.

After Wednesday, we’re back into smaller stuff through the end of the month. Thursday the 27th has glassy afternoon conditions again, but the swell drops back to 1ft with energy at 66. Not terrible, but definitely smaller. The real interesting note comes on Monday the 31st of August. We see a 1ft swell from the WNW with a period of 15 seconds and combined energy of 123. That’s a long period groundswell, which can produce some nice, lined-up waves here at Kiholo Bay, especially with glassy winds in the morning. It’s a point break setup, so it should handle that long period well. Keep an eye on that one, but remember, it’s a long way out so don’t get too attached just yet.

All in all, it’s a tough outlook. The first ten days are a write-off. Wednesday the 26th afternoon is your best bet, and then maybe keep an eye on the 31st for something a bit more promising. It’s the kind of run that tests your commitment, but these things never stay flat forever.

Rusty.

Short Range Forecast

Heavy rain (total 30mm), heaviest during Sat night. Warm (max 28°C on Sat night, min 25°C on Mon night). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 2mm), mostly falling on Fri afternoon. Warm (max 28°C on Fri morning, min 25°C on Tue night). Wind will be generally light.

Sunday
16
Monday
17
Tuesday
18
Wednesday
19
Thursday
20
Friday
21
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
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1
NNE
8
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
WNW
11
0.3
WNW
13
0.4
WNW
12
0.3
WNW
12
0.3
SW
16
0.3
SW
18
0.3
SW
17
0.2
W
11
0.2
WSW
8
0.3
SW
16
0.2
W
10
Wave Graph
Metric surfscale
Energy kJ
0
32
49
27
25
24
25
25
25
33
48
28
41
49
47
9
7
39
9
Wind (km/h)
5
E
10
WNW
10
N
5
S
10
NNW
5
NNW
0
SE
10
WNW
0
NNW
5
SSW
5
W
5
W
0
SSE
10
WNW
5
NW
5
SSW
10
W
10
W
5
WSW
Wind State
glassy
on
cross
cross-off
cross-on
glassy
glassy
on
glassy
glassy
on
glassy
glassy
on
on
glassy
on
cross-on
glassy
High Tide
6:25AM0.59m
5:55PM0.57m
7:15AM0.60m
6:17PM0.49m
8:14AM0.60m
6:29PM0.41m
9:26AM0.60m
10:50AM0.61m
12:03PM0.64m
11:21PM0.26m
Low Tide
00:02AM0.08m
12:11PM0.25m
00:27AM0.10m
1:12PM0.31m
00:52AM0.12m
2:39PM0.36m
1:22AM0.14m
2:03AM0.16m
3:10AM0.18m
8:46PM0.25m
rain showers
thunderstorm
thunderstorm
thunderstorm
clear
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
part cloud
part cloud
clear
thunderstorm
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:03
6:03
6:03
6:03
6:05
6:05
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:52
6:51
6:50
6:50
6:49
6:47
6:47
 mm
25
1
3
1
2
Temp °C
28
28
28
28
28
28
27
27
27
26
27
27
26
27
27
27
28
28
27
Feels °C
30
32
31
32
32
32
31
30
31
30
31
31
31
30
30
32
32
32
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 Kiholo Bay Surf forecast

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

Kiholo Bay is 89 km (55 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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