Kiholo Bay Surf Break

Lat Long: 19.86° N 155.93° W

Kiholo Bay Surf Forecast and Surf Report

Issued: 1 pm 17 Aug 2026 (local time)

Forecast update in  hr  min

Today's Kiholo Bay sea temperature is
27.3° C
0.7° 

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, 5PM (local time) - 1.5ft (0.4m), 12s period, WNW swell with glassy winds.
  • Most powerful swell: Sunday 23 Aug, 2PM (local time) - 1.5ft (0.5m), 11s period, WNW swell with 69 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 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 5PM. The primary swell is predicted to be 0.4m and 12s period with a secondary swell of 0.3m and 16s. 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 11s and forecast to arrive on Sunday (Aug 23) at 2PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 6s period and expected on Friday (Aug 21) at 11PM.

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 Powerful 2PM (Sun 23rd Aug)1.5ft (0.5m) 11s

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


The Lowdown

G’day, it’s Rusty here. Let’s be straight with you: the next couple of weeks are looking pretty grim for a proper paddle at Kiholo Bay. We’ve got a long stretch with bugger-all on the cards, and honestly, it’s one of those times where you might be better off dusting off the kite or just enjoying the beach. The first real chance of anything more than a dribble doesn’t show up until the end of the month, and even then, it’s pretty ordinary.

Right now, through the rest of this week and into the weekend, it’s flat. We’re talking tiny, weak surf with that long-period WNW groundswell just not showing any energy. On Monday afternoon (the 17th), there’s maybe 1ft of swell (energy 24), but it’s barely a ripple and the conditions are poor. The water temp is sitting at 81°F, which is pretty much spot on for this time of year, so no surprises there. The wind is light and glassy at times, but that doesn't help when there’s nothing to push around. Tuesday morning is the same story, 1ft and onshore, with a bit of a bump. The rest of the week is a total write-off. Honestly, from the 17th through the 24th, we’re looking at a solid gap where there are zero recommendations. The swell stays under 2ft, periods are all over the place, and the energy readings are in the weak range, mostly below 100. You’ll see some glassy afternoons, but it’s flat out hopeless.

Now, there is a very brief flicker on the 23rd, where the swell bumps up a touch to 2ft with a period of 12 seconds, and the combined energy finally pushes into the moderate range (121) on the Sunday morning. But it’s a tease. The wind is cross-onshore and lumpy, and the forecast still calls it poor. The afternoon gets chopped up even more. That’s not worth suiting up for.

The next real window, if you can call it that, shows up on the 30th of August. The swell continues to build slowly. That Sunday afternoon, we’ve got 2ft from the WNW with a 16-second period, and the energy is back up to 114. The wind is light and cross-onshore, so it’s not clean, but it’s the most interesting it’s been. Then, finally, Monday the 31st looks like the pick of the whole run. The swell is still small, only 2-2ft, but the period is a solid 15 seconds and the energy climbs to 126, which is the strongest we’ve seen. The Monday afternoon is glassy, with a calm wind and no bumps. It’s still only waist-to-chest high at best, but that long-period groundswell should at least give it some shape. Being a beach and point setup, it might offer a few fun ones. That’s your standout, but you’ll be fighting for scraps.

After that, the 1st of September sees the swell hold at 2-2ft, but the northwest wind swings around to a cross-shore and picks up, adding some chop and killing the quality. So, there you have it. A long, flat patch, followed by a tiny, clean window on the 31st that’s promising but not exactly firing. It’s one for the patient ones.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 28°C on Mon afternoon, min 25°C on Mon night). Wind will be generally light.

Days 5-7 Weather Summary

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

Mon
17
Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
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
1
0
0
1
0
0
0
0
0
0
1
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
11
0.3
WNW
11
0.3
WNW
13
0.4
WNW
12
0.4
WNW
12
0.3
SW
16
0.3
SW
18
0.3
SW
17
0.3
W
11
0.3
W
10
0.3
SW
16
0.4
WNW
10
0.3
SW
15
0.4
WNW
10
0.3
SW
15
0.4
WNW
12
0.4
WNW
11
0.3
WNW
10
Wave Graph
Metric surfscale
Energy kJ
24
25
25
25
33
48
48
41
49
47
20
19
39
35
37
34
36
55
45
18
Wind (km/h)
5
WSW
5
SE
10
NW
5
NW
0
SSE
5
WNW
5
N
5
SW
10
WNW
5
W
5
SW
10
WNW
10
WSW
5
NW
5
W
5
W
0
E
10
NNW
15
N
5
NNE
Wind State
glassy
glassy
on
glassy
glassy
on
glassy
glassy
on
glassy
glassy
on
cross-on
glassy
on
glassy
glassy
cross-on
cross
glassy
High Tide
6:17PM0.49m
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
Low Tide
00:52AM0.12m
2:39PM0.36m
1:22AM0.14m
2:03AM0.16m
3:10AM0.18m
8:46PM0.25m
8:47PM0.22m
5:53AM0.15m
9:01PM0.19m
part cloud
part cloud
part cloud
clear
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
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
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:50
6:50
6:49
6:47
6:47
6:46
6:45
 mm
Temp °C
28
27
27
27
26
27
28
27
27
27
27
28
28
27
28
29
27
28
28
27
Feels °C
32
32
30
31
30
30
31
31
30
30
32
31
31
31
31
32
32
31
30
29
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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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