Kiholo Bay Surf Break

Lat Long: 19.86° N 155.93° W

Kiholo Bay Surf Forecast and Surf Report

Issued: 7 am 18 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 18 Aug 2026:

  • Best quality surf: Wednesday 19 Aug, 8PM (local time) - 1ft (0.3m), 16s period, SW swell with glassy winds.
  • Most powerful swell: Sunday 23 Aug, 5AM (local time) - 1.5ft (0.5m), 12s period, WNW swell with 78 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 19 Aug, 8PM (local time) - 1ft (0.3m), 16s period with SW 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 Wednesday (Aug 19) at 8PM. The primary swell is predicted to be 0.3m and 16s period with a secondary swell of 0.3m and 12s. 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 0.5m 12s and forecast to arrive on Sunday (Aug 23) at 5AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 7s period and expected on Monday (Aug 24) at 5PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Wed 19th Aug)1ft (0.3m) 16s
Best Surf 8PM (Wed 19th Aug)1ft (0.3m) 16s
Most Powerful 5AM (Sun 23rd Aug)1.5ft (0.5m) 12s

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


The Lowdown

Alright, grab your board and listen up. Rusty here.

First up, straight talk: this is not our finest moment. The forecast for Kiholo Bay over the next two weeks is a real mixed bag of tiny, weak, and messy. We’re looking at a long stretch of poor conditions with barely a ripple, so don't get your hopes up for anything epic. The water temp is sitting at 81°, which is pretty much what you’d expect for this time of year, no big surprises there.

The first real glimmer of anything surfable doesn't show until Wednesday the 26th. The morning of the 26th, we’ve got a clean, glassy start with a 2ft SW swell pushing through at 11 seconds. The energy is moderate (121) but the waves are just "surfable" and nothing to write home about. By the afternoon, that onshore wind kicks up and ruins it. Thursday the 27th offers another brief window in the afternoon with glassy conditions and a similar 2ft WSW swell (99 energy), but again, it’s just ordinary.

Friday the 28th might be your best bet across the whole outlook. The morning is glassy with a 2ft WSW swell (88 energy) and the afternoon stays glassy with the same size swell (91 energy). It’s small, but it’s clean. If you’re desperate for a paddle, that’s the time to go. After that, it’s back to tiny, weak, and mostly onshore junk through the end of the month and into September 1st.

For the standout here, it’s got to be the Friday the 28th session at Kiholo Bay. A 2ft swell from the WSW, clean and glassy both morning and afternoon. It’s nothing massive, but when the rest of the forecast is flat or blown out, that’s the one to aim for. Just know the crowds can show up at Kiholo Bay sometimes, so don’t expect to have it all to yourself.

A bit of a warning: for beginners, this whole period is pretty underwhelming. Nothing gets over 3ft, so it’s all small fry stuff. On Wednesday the 2nd of September, the afternoon swell jumps to 3ft from the SW with a solid energy reading of 173 (moderate), but the onshore wind will have it chopped. That might be more of a kite surfing kind of day than a clean paddle session.

So, to sum it up: there’s a long dry spell before we get anything, and even then, it’s just small, clean windows. Friday the 28th is your best shot. Don’t expect much else.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 28°C on Tue afternoon, min 26°C on Tue morning). Wind will be generally light.

Days 4-6 Weather Summary

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

Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
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
1
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)
0.3
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
0.3
W
11
0.4
WNW
10
0.4
WNW
10
0.4
WNW
10
0.3
SW
15
0.4
WNW
10
0.4
NW
12
0.3
SW
15
0.4
NW
10
0.2
WNW
10
0.7
NNE
7
0.1
NW
11
0.8
NNE
6
Wave Graph
Metric surfscale
Energy kJ
25
25
33
48
28
41
49
47
21
36
34
34
37
36
38
46
26
9
0
5
0
Wind (km/h)
10
WNW
5
W
0
N
10
WNW
5
N
0
WNW
10
WNW
10
NW
5
SSW
10
WNW
10
WSW
5
N
10
WSW
5
NW
5
NNE
10
WNW
10
NNE
0
SSE
10
W
5
WNW
0
NNE
Wind State
on
glassy
glassy
on
glassy
glassy
on
cross-on
glassy
on
cross-on
cross
cross-on
glassy
glassy
on
cross
glassy
cross-on
on
glassy
High Tide
8:14AM0.60m
6:29PM0.41m
9:26AM0.60m
10:50AM0.61m
12:03PM0.64m
11:21PM0.26m
12:57PM0.68m
00:46AM0.28m
1:38PM0.72m
1:33AM0.32m
2:12PM0.75m
2:09AM0.36m
Low Tide
2:39PM0.36m
1:22AM0.14m
2:03AM0.16m
3:10AM0.18m
8:46PM0.25m
8:47PM0.22m
5:53AM0.15m
9:01PM0.19m
6:48AM0.12m
9:18PM0.17m
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:03
6:03
6:05
6:05
6:05
6:05
6:05
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:50
6:49
6:47
6:47
6:46
6:45
6:45
 mm
Temp °C
27
28
26
28
28
27
28
28
27
28
28
27
29
28
27
29
29
27
28
28
27
Feels °C
30
31
31
32
32
32
31
31
32
31
31
32
32
31
31
32
32
30
30
31
32
  • Map Icons:
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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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