Sixtynine Surf Break

Lat Long: 19.98° N 155.84° W

Sixtynine Surf Forecast and Surf Report

Issued: 7 pm 15 Aug 2026 (local time)

Forecast update in  hr  min

Today's Sixtynine sea temperature is
27.3° C
0.7° 

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


Sixtynine surf forecast from 16 Aug 2026:

  • Best quality surf: Tuesday 18 Aug, 11PM (local time) - 1.5ft (0.4m), 13s period, WNW swell with cross-offshore 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 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 Tuesday (Aug 18) at 11PM. The primary swell is predicted to be 0.4m and 13s period. The wind is predicted to be cross-offshore 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 cross-offshore 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 Sixtynine over the next 16 days.


The Lowdown

G’day, I’m Rusty, and I’m looking at Sixtynine (Sixtynine) for the next 16 days. And mate, I gotta be honest – this stretch is a tough one. The water temp is sitting about average for this time of year, nothing unusual there. But the surf? It’s mostly flat or tiny, with poor conditions ruling the roost right through. We’ve got a long dry spell ahead with no real standouts, so patience is the name of the game.

Starting Sunday the 16th, it’s a write-off. A risk of thunderstorms, a tiny 1 ft swell from the WNW at 13 seconds, and weak energy (32) – not worth paddling out. The afternoon goes glassy with a 1 ft WNW swell at 12 seconds, but it’s still poor with energy at 49. Monday and Tuesday are more of the same: small 1 ft swells, light cross-shore winds, and energy barely ticking over between 24 and 39. Wednesday the 19th offers a brief moment of glass with 1 ft WNW swell at 12 seconds and energy at 48, but the waves are tiny – just not enough to get excited about.

Thursday the 20th afternoon gives us a glimpse: 1 ft from the SW at 17 seconds, glassy wind, and energy climbing to 70 – it’s labeled “surfable but very ordinary.” That’s the best we get for a while, but it’s still small. Friday through to the 24th is a slog: swells hover around 0.7-1 ft, winds shift onshore or cross-on, and energy stays below 60. The 26th shows a slight uptick – Wednesday morning has 2 ft from the WNW at 12 seconds with energy hitting 111 (moderate), and the afternoon is glassy with the same 2 ft and 114 energy – finally some surfable waves, but still “very ordinary.” That’s the highlight, and it’s barely a highlight.

From the 27th through the 31st, it’s back to small stuff: 1-1 ft swells, occasional glassy windows, but energy mostly under 70. The 31st Monday morning sees 1 ft from the WNW at 15 seconds with energy at 123 – again, moderate energy, but still poor conditions and tiny surf. For the whole 16-day run, there’s no day I’d call a standout. The consistency is there at Sixtynine, which is a small mercy, but the swell just isn’t cooperating. It’s a blank stretch where you’re better off waiting for a change in the forecast.

Rusty.

Short Range Forecast

Heavy rain (total 35mm), heaviest during Sat night. Warm (max 29°C on Sun morning, 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 Thu 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
1
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
SE
10
W
0
ESE
0
NE
10
NNE
5
NNE
10
ENE
5
NW
5
NNE
5
NNE
5
WNW
5
NW
0
N
10
WNW
5
NW
0
WSW
10
WNW
10
W
0
WSW
Wind State
glassy
on
glassy
glassy
cross
cross
cross-off
cross-on
cross
glassy
glassy
glassy
glassy
on
glassy
glassy
on
cross-on
glassy
High Tide
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
12:08PM0.59m
11:45PM0.18m
Low Tide
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
8:34PM0.15m
thunderstorm
thunderstorm
mod rain
thunderstorm
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
thunderstorm
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:03
6:03
6:03
6:03
6:03
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
6:46
 mm
27
1
6
1
2
Temp °C
28
29
28
28
28
28
26
27
27
26
27
27
26
28
28
27
28
28
27
Feels °C
29
33
31
33
32
31
29
30
31
30
31
31
31
31
32
32
31
32
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 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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