Sixtynine Surf Break

Lat Long: 19.98° N 155.84° W

Sixtynine Surf Forecast and Surf Report

Issued: 7 am 14 Aug 2026 (local time)

Forecast update in  hr  min

Today's Sixtynine sea temperature is
27.4° C
0.9° 

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


Sixtynine surf forecast from 14 Aug 2026:

  • Best quality surf: Wednesday 19 Aug, 8PM (local time) - 1ft (0.3m), 16s period, SW 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★+): Wednesday 19 Aug, 8PM (local time) - 1ft (0.3m), 16s period with SW swell.

Best Forecast Surf Conditions for Sixtynine this week:

The surf forecast for Sixtynine 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 Sixtynine 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 3.5m 8s period and expected on Saturday (Aug 15) at 8PM.

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 Powerful11PM (Tue 18th Aug)1.5ft (0.4m) 13s

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


The Lowdown

Alright, crew, Rusty here. Let’s be real with you. The next couple of weeks are going to test your patience if you’re chasing waves. We’ve got a long stretch of tiny surf ahead, so let’s break it down day by day.

The outlook starts off flat and stays that way for a while. The first real chance of anything rideable doesn’t show up until Thursday, August 20th, and even then, it’s barely a ripple. The swell energy during this whole period is weak, mostly in the 10 to 73 range, which tells you there’s just nothing pushing through. The prevailing winds are mostly cross or offshore, which means the ocean surface will be clean, but with waves this small, it’s a lake out there.

From Friday, August 14th through Wednesday, August 19th, it’s a total write-off. Swell heights are stuck at 0.7ft to 1ft from the west or west-northwest with short, weak periods. There’s a bit of cross-chop on Friday morning, but it cleans up quickly. The only thing worth noting is the glassy conditions on Monday afternoon and Tuesday afternoon, but with nothing to ride, that’s just a nice paddle.

The first glimmer of hope arrives Thursday, August 20th in the afternoon. The wind goes glassy and we get a tiny bump of 1ft from the southwest, with a period of 17 seconds. That’s a long-period groundswell, so it’s got some push, but the height just isn't there. The energy is still weak at 71. It’s surfable but very ordinary. Mostly, you’re looking for a knee-high wave if you’re desperate.

After that, we slip back into a poor spell. Friday, August 21st and Saturday, August 22nd have some onshore wind and cross-chop messing things up. The swell stays tiny and disorganized. Sunday, August 23rd afternoon goes glassy again with another 1ft from the southwest, but it's just not enough to get excited about.

The following week, from Monday, August 24th through Saturday, August 29th, shows a similar pattern. We see small west and west-northwest swells, mostly 1ft, with a few 1ft pulses on Wednesday morning and Thursday morning. The periods are often short, dipping to 9-10 seconds, which means even less energy. The wind is mostly light, with some moderate cross-shore breezes on Monday, but generally, it’s clean. The standout, if you can call it that, is Thursday, August 27th morning when we get a 1ft west swell with a 12-second period and light cross-on wind. The energy jumps to 47, which is the best of the week, but it’s still small.

Let’s be straight: none of these days are worth planning your life around. The water temp is about average for this time of year, so no surprises there.

The best options are the glassy windows with any hint of swell, like the 20th or 27th, but they’re marginal at best. If you’re a beginner, these tiny 1ft waves are okay to mess around on, but they’re not going to give you much push. The periods on the 20th are long, so look for a point or reef if you can, but the size is a major limiting factor.

This is a true flat spell. If you see a 1ft blip on Thursday the 27th, grab a longboard and a lot of patience. Otherwise, it’s a good time to do some maintenance on your boards.

Rusty out.

Short Range Forecast

Heavy rain (total 43mm), heaviest during Sat night. Warm (max 30°C on Sat morning, min 26°C on Sat night). Winds decreasing (gales from the ENE on Sat night, calm by Sun night).

Days 4-6 Weather Summary

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

Friday
14
Saturday
15
Sunday
16
Monday
17
Tuesday
18
Wednesday
19
Thursday
20
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
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
11
0.3
W
12
0.2
W
12
0.3
W
11
0.2
W
14
0.3
WNW
13
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
0.3
W
11
Wave Graph
Metric surfscale
Energy kJ
10
24
12
21
16
34
32
49
27
25
24
25
25
25
33
48
28
41
49
47
21
Wind (km/h)
30
NNE
25
NE
30
NE
20
NE
40
ENE
10
NNE
5
W
10
SW
5
ESE
5
NNW
5
ENE
10
ENE
5
NNE
5
N
0
NE
5
NW
5
WNW
5
NE
5
NNW
5
W
5
W
Wind State
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
on
cross
glassy
glassy
cross-off
cross-off
cross
glassy
glassy
cross-on
glassy
glassy
cross-on
glassy
glassy
High Tide
5:25PM0.69m
6:01AM0.48m
5:56PM0.60m
6:49AM0.51m
6:24PM0.51m
7:40AM0.53m
6:51PM0.41m
8:37AM0.54m
7:15PM0.33m
9:44AM0.55m
7:33PM0.25m
10:59AM0.57m
Low Tide
10:52AM0.02m
00:02AM-0.01m
11:41AM0.09m
00:29AM0.00m
12:35PM0.16m
00:54AM0.02m
1:40PM0.21m
1:21AM0.04m
3:09PM0.25m
1:51AM0.05m
5:41PM0.25m
2:31AM0.07m
3:32AM0.09m
clear
part cloud
rain showers
thunderstorm
light rain
rain showers
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
thunderstorm
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:03
6:03
6:03
6:03
6:03
6:03
6:03
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:52
6:52
6:51
6:50
6:50
6:49
6:47
 mm
4
2
4
27
4
2
1
4
1
1
Temp °C
29
29
27
30
29
28
29
29
28
28
27
26
26
27
26
28
27
26
28
28
26
Feels °C
28
28
27
31
29
32
33
32
33
32
32
29
30
31
30
32
31
30
31
32
30
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 
submit an eyeball surf report

Quick surf report for Sixtynine:

join our community of surf reporters

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Sixtynine surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


Information about the Sixtynine Surf forecast

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

Sixtynine is 84 km (52 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.

Nearest locationNearest