Sixtynine Surf Break

Lat Long: 19.98° N 155.84° W

Sixtynine Surf Forecast and Surf Report

Issued: 7 am 12 Aug 2026 (local time)

Forecast update in  hr  min

Today's Sixtynine sea temperature is
27.3° 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 13 Aug 2026:

  • Most powerful swell: Wednesday 19 Aug, 2AM (local time) - 1.5ft (0.4m), 13s period, WNW swell with 55 kJ wave energy.

Best Forecast Surf Conditions for Sixtynine this week:

The most powerful waves expected at Sixtynine in the next 16 days are 0.4m 13s and forecast to arrive on Wednesday (Aug 19) at 2AM. Winds are predicted to be cross-offshore 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 11PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 2AM (Wed 19th 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 here’s the outlook for the next couple of weeks around the Sixtynine break.

Look, I’ve gotta be straight with you – the surf scene for the foreseeable future is pretty flat and quiet. The entire 16-day window is one long stretch with nothing to get excited about. The first record kicks off on Wednesday, 12th August, but don’t be fooled. From that morning right through until the end of the period on Thursday, 27th August, every session is marked as poor surf conditions. That’s over two weeks of the same story.

Wednesday morning, 12th August, starts with a tiny 0.3m swell (that’s about 1 foot) from the west, period a touch short at 11 seconds, and a cross-shore NNE breeze at 15 km/h (around 9 mph) kicking up a slight cross-chop. Combined energy is only 22 – that’s weak, no power behind it. Water temp’s sitting at 27°C (81°F), which is about 0.8°C (1°F) warmer than average for this time of year, so nothing wild there. The afternoon doesn’t improve – still 0.3m (1 ft), period stretches to 13 seconds, but wind lightens a bit to 10 km/h (6 mph), still cross-shore. Still poor.

Thursday 13th and Friday 14th August just roll on with the same theme: 0.2m to 0.3m swells (0.7 to 1 ft), cross-shore winds picking up to 20–25 km/h (12–16 mph), and combined energy bouncing between 10 and 36. Not a wave worth paddling for. Saturday 15th August brings a bit more wind – NE at 40–45 km/h (25–28 mph), cross-offshore, which cleans the surface, but the swell’s still a pathetic 0.2–0.3m (0.7–1 ft). Energy readings of 25 and 26. No go.

Sunday 16th August has a risk of thunderstorms, but a bit of hope with a tiny 0.4m swell (1 ft) and an offshore NW breeze at 5 km/h (3 mph) in the afternoon, period at 12 seconds, energy at 49 – still weak. Monday 17th August afternoon goes glassy with a light easterly, but the swell’s back to 0.3m (1 ft).

From Tuesday 18th August through to Thursday 27th August, it’s the same low-grade dribble. Swell heights rarely break 0.4m (1 ft), periods mostly 10–12 seconds, energy readings in the single digits or low teens at best. Winds flick between light cross-onshore and glassy, but there’s simply no wave to ride. The only notable spike comes on Thursday 20th August, when a long-period 18-second swell from the SW pushes combined energy to 71 and then 87 – moderate energy for a moment – but the swell height is still only 0.3m (1 ft). That’s a tease.

Honestly, there’s no standout day, no standout session. The whole stretch is a write-off for paddle surfing. If you’re a beginner, don’t worry – nothing here is too big (nothing’s over 1.5m, or 5 ft). But there’s also nothing to ride. For the experienced crew, the lack of any decent swell makes it a no-brainer to stay home.

Given the constant poor conditions, this blank run is just what this area does sometimes. Forecasts can change, but for now, the boards stay dry.

- Rusty

Short Range Forecast

Some drizzle, heaviest during Fri night. Warm (max 29°C on Wed afternoon, min 25°C on Wed night). Wind will be generally light.

Days 4-6 Weather Summary

Heavy rain (total 75mm), heaviest during Sat night. Warm (max 29°C on Sun morning, min 25°C on Mon night). Mainly near gales.

Wednesday
12
Thursday
13
Friday
14
Saturday
15
Sunday
16
Monday
17
Tuesday
18
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
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
W
11
0.3
WNW
13
0.3
SSW
16
0.3
WNW
12
0.3
W
12
0.3
W
12
0.2
W
11
0.3
W
12
1
NNE
6
0.3
W
11
0.2
W
14
0.3
WNW
13
0.3
WNW
13
0.4
WNW
12
0.4
WNW
12
0.3
WNW
11
0.3
WNW
11
0.3
WNW
11
0.3
WNW
11
0.3
W
11
0.4
WNW
13
Wave Graph
Metric surfscale
Energy kJ
22
33
0
28
25
25
10
24
0
21
16
34
31
49
46
24
24
25
25
22
55
Wind (km/h)
15
NNE
10
NNE
5
NNE
20
NNE
25
NNE
10
NE
20
NNE
25
NNE
25
NE
40
NE
45
NE
35
SW
15
SW
5
NW
5
NE
10
WNW
5
E
10
ENE
5
N
10
NNE
5
ENE
Wind State
cross
cross
glassy
cross
cross
cross-off
cross
cross
cross-off
cross-off
cross-off
cross-on
cross
on
glassy
on
glassy
cross-off
cross-on
cross-off
cross-off
High Tide
4:16PM0.81m
4:30AM0.38m
4:52PM0.76m
5:16AM0.44m
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
Low Tide
9:15AM-0.06m
11:06PM-0.01m
10:03AM-0.03m
11:35PM-0.01m
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
part cloud
clear
clear
clear
clear
clear
clear
part cloud
rain showers
thunderstorm
rain showers
heavy rain
thunderstorm
thunderstorm
thunderstorm
rain showers
thunderstorm
part cloud
clear
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:01
6:01
6:03
6:03
6:03
6:03
6:03
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:53
6:52
6:52
6:52
6:51
6:50
6:50
 mm
1
3
8
45
1
6
5
1
6
Temp °C
28
29
26
28
28
26
28
28
27
27
27
26
29
28
27
29
27
26
27
28
25
Feels °C
29
30
29
28
27
26
28
28
28
26
23
20
32
32
31
32
30
28
30
31
27
  • 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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