Sixtynine Surf Break

Lat Long: 19.98° N 155.84° W

Sixtynine Surf Forecast and Surf Report

Issued: 7 pm 21 Aug 2026 (local time)

Forecast update in  hr  min

Today's Sixtynine sea temperature is
27.4°C
0.8° 

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


Sixtynine surf forecast from 22 Aug 2026:

  • Best quality surf: Sunday 23 Aug, 2AM (local time) - 1.5ft (0.5m), 10s period, WNW swell with glassy winds.
  • Most powerful swell: Sunday 23 Aug, 11AM (local time) - 1.5ft (0.5m), 12s period, WNW swell with 75 kJ wave energy.
  • Next surfable swell (1★+): Sunday 23 Aug, 2AM (local time) - 1.5ft (0.5m), 10s period with WNW 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 Sunday (Aug 23) at 2AM. The primary swell is predicted to be 0.5m and 10s period. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Sixtynine in the next 16 days are 0.5m 12s and forecast to arrive on Sunday (Aug 23) at 11AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 6s period and expected on Saturday (Aug 22) at 5PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Sun 23rd Aug)1.5ft (0.5m) 10s
Best Surf 2AM (Sun 23rd Aug)1.5ft (0.5m) 10s
Most Powerful11AM (Sun 23rd Aug)1.5ft (0.5m) 12s

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


The Lowdown

Alright folks, Rusty here. Let's have a look at what the models are saying for the next couple of weeks at Sixtynine. Gotta be honest with you, looking at this whole 16-day window, it's a pretty grim stretch. We've got a solid two-week gap with hardly a wave worth paddling for. The first actual chance of something surfable doesn't roll around until the 4th of September.

The pattern is basically flat and calm for most of it. From now through the end of August and into the first few days of September, it’s a whole lot of nothing. There's a few days with tiny bumps of 0.7ft to 2ft, but the energy is pathetic – we're talking combined energy values as low as 4 and 5, which is barely a ripple. The wind is mostly light, which is nice, but it’s like polishing a turd. There’s no swell to work with. You’ll see a few sessions with glassy conditions on the 24th of August afternoon and the 27th of August afternoon, but with wave heights of 0.7ft, you'd be better off on a stand-up paddleboard.

Then we hit a proper dry spell. From the 25th of August all the way through to the morning of the 2nd of September, the combined energy is a flat zero across the board. No waves. The wind is clean in places, but with no swell, who cares? It's a total blank run.

Alright, so where is the hope? It’s way out there. The only faint glimmer of something worthwhile shows up on Friday, the 4th of September.

The standout, if you can call it that, is Sixtynine itself. On Friday afternoon, we finally see a pulse of swell. It's small, coming in at 2ft from the west with a 13-second period. That long period means it’s a proper groundswell, which is good, but for a spot like this, it’s still tiny. The combined energy hits 92 – still in that weak zone, but it's something. The wind goes glassy, which is a huge positive, cleaning it right up. The forecast says "surfable waves but very ordinary conditions," and that's spot on. It’s not going to be epic, but if you're desperate for a paddle, it’s your only real window. The swell is from the west, which is close to the optimum WNW direction for this break, so it should wrap in alright.

Don't get your hopes up for the rest. Saturday the 5th has some glassy periods too, but the swell drops back to 1ft. It's a tease.

So, the bottom line: we've got a massive gap of about 10 days with absolutely nothing. Save your energy. The only day worth even peeking at the ocean is the afternoon of Friday, the 4th of September. It'll be small, clean, and you'll probably have the place to yourself. For the rest, give the board a rest and clean the wax off.

Rusty.

Short Range Forecast

Light rain (total 4mm), mostly falling on Mon afternoon. Warm (max 29°C on Sat morning, min 25°C on Sat night). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 4mm), mostly falling on Mon night. Warm (max 29°C on Tue morning, min 24°C on Wed night). Wind will be generally light.

Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
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
1
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)
0.5
W
10
0.3
SW
15
0.5
W
11
0.5
WNW
10
0.5
WNW
12
0.4
WNW
11
0.3
WNW
10
0.2
WNW
12
0.2
WNW
12
0.7
NE
6
0.8
NE
6
0.9
NE
6
0.2
W
11
0.7
NNE
5
0.9
NE
6
0.2
SSW
16
0.3
SSW
16
0.2
N
8
0.2
N
7
Wave Graph
Metric surfscale
Energy kJ
50
37
57
59
75
44
18
14
13
0
0
0
10
0
0
0
0
5
4
Wind (km/h)
5
NE
10
NNW
10
N
5
WNW
20
NE
10
NNE
0
NNE
10
WNW
0
NE
5
NE
5
N
5
NNE
15
NE
10
NNE
15
NE
5
ENE
5
N
5
WNW
10
ENE
Wind State
cross-off
cross-on
cross
glassy
cross-off
cross
glassy
on
glassy
glassy
cross-on
cross
cross-off
cross
cross-off
cross-off
cross
glassy
cross-off
High Tide
11:45PM0.18m
1:04PM0.62m
1:02AM0.20m
1:49PM0.66m
1:48AM0.23m
2:26PM0.69m
2:25AM0.28m
2:59PM0.71m
3:00AM0.33m
3:28PM0.72m
3:36AM0.38m
3:56PM0.71m
4:12AM0.43m
Low Tide
8:34PM0.15m
8:53PM0.12m
6:05AM0.06m
9:13PM0.10m
7:02AM0.04m
9:33PM0.09m
7:49AM0.01m
9:53PM0.07m
8:30AM0.00m
10:13PM0.05m
9:11AM0.01m
10:35PM0.03m
clear
clear
clear
clear
part cloud
thunderstorm
part cloud
part cloud
thunderstorm
thunderstorm
part cloud
thunderstorm
clear
clear
part cloud
part cloud
clear
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:05
6:05
6:05
6:05
6:05
6:05
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:46
6:46
6:45
6:45
6:44
6:43
6:43
 mm
1
3
2
2
Temp °C
27
29
29
27
28
29
27
29
29
27
29
27
26
27
29
26
28
29
26
Feels °C
31
32
32
30
29
31
31
33
33
32
33
31
28
28
30
29
29
31
30
  • 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 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.

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