Sixtynine Surf Break

Lat Long: 19.98° N 155.84° W

Sixtynine Surf Forecast and Surf Report

Issued: 1 pm 11 Sep 2026 (local time)

Forecast update in  hr  min

Today's Sixtynine sea temperature is
27.7°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 12 Sep 2026:

  • Best quality surf: Tuesday 15 Sep, 5AM (local time) - 1ft (0.3m), 21s period, SW swell with cross-offshore winds.
  • Most powerful swell: Wednesday 16 Sep, 2PM (local time) - 1.5ft (0.4m), 18s period, SW swell with 109 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 15 Sep, 5AM (local time) - 1ft (0.3m), 21s 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 Tuesday (Sep 15) at 5AM. The primary swell is predicted to be 0.3m and 21s period with a secondary swell of 0.4m and 4s. 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 18s and forecast to arrive on Wednesday (Sep 16) at 2PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 6s period and expected on Wednesday (Sep 16) at 5PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Tue 15th Sep)1ft (0.3m) 21s
Best Surf 5AM (Tue 15th Sep)1ft (0.3m) 21s
Most Powerful 2PM (Wed 16th Sep)1.5ft (0.4m) 18s

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


The Lowdown

Alright, Rusty here. Let's have a look at what we've got for the next couple weeks.

Honestly, it's a pretty bleak stretch for surf at Sixtynine. The whole period is dominated by weak, short-period pulses or calm conditions, with very little energy to get excited about. There's a big gap of nothing useful from now all the way through to the morning of the 18th of September. The water temp is sitting at 28° which is about average for this time of year, so at least a quick dip won't be a shock.

The first real glimmer of something comes on the morning of Friday the 18th of September. A small SW swell pushes through at 1 ft with a long period of 17 seconds, offering moderate combined energy (107). That long period groundswell could make for some longer lines, but the break here is a beach setup, so it might be a bit too straight and tricky. The wind is light and onshore from the NW, so it won't be clean. It's still tiny and not great, so keep expectations low.

Later that day, it fades to a glassy 0.3 ft from the W – not worth a paddle.

We get a few more days of near-flat conditions and poor winds. Then on the afternoon of Thursday the 24th of September, things get slightly more interesting. A 1 ft SW swell with a 14-second period rolls in, combined energy moderate (72). The wind goes glassy from the W, which is a major plus for clean conditions. The wave comment says "surfable waves but very ordinary conditions," so while it’s the best window in the whole outlook, it's still only a 1/10 grade. If you're desperate for a splash, this is the one, but don't expect much.

After that, the morning of the 26th of September brings a 1 ft NNW swell with a 15-second period (energy 84), but with a 6 mph onshore wind, it's not going to be clean. The afternoon looks similar, with cross-on winds and more small, sloppy surf.

Overall, there's no standout session here. The best of a bad bunch is the glassy Thursday afternoon on the 24th, but it's really just a small, ordinary wave. For the rest of the time, the setup is more interesting for kite surfing than paddle surfing. Forecasts can change, but right now, it's a quiet spell.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 28°C on Fri afternoon, min 24°C on Sun night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Warm (max 30°C on Wed morning, min 26°C on Mon night). Wind will be generally light.

Fri
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
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
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.4
SW
15
0.4
SW
15
0.4
SW
15
0.3
SW
14
0.3
SW
14
0.7
NNE
9
0.2
W
11
0.2
W
11
0.2
W
10
0.2
SSW
22
0.2
SSW
21
0.2
N
10
0.4
SW
19
0.2
WSW
8
0.4
SW
18
0.5
SW
18
0.4
SW
17
0.4
SW
16
0.4
SW
16
0.5
SW
17
Wave Graph
Metric surfscale
Energy kJ
0
0
0
29
29
0
9
9
8
0
0
8
0
7
0
0
0
0
0
0
Wind (km/h)
5
WNW
0
NNE
10
NW
5
WNW
0
NNE
10
NNW
5
N
10
ENE
5
NW
5
NNW
5
NE
5
NW
5
NNW
5
NE
10
N
5
NNE
5
NE
10
NNW
5
N
5
NE
Wind State
glassy
glassy
on
on
glassy
cross-on
glassy
cross-off
cross-on
glassy
glassy
cross-on
glassy
cross-off
cross-on
cross
glassy
cross-on
cross
cross-off
High Tide
4:16PM0.63m
4:50AM0.58m
4:46PM0.55m
5:28AM0.61m
5:15PM0.47m
6:08AM0.62m
5:43PM0.39m
6:50AM0.62m
6:10PM0.32m
7:39AM0.59m
6:37PM0.25m
8:41AM0.57m
7:08PM0.20m
Low Tide
10:37PM-0.02m
10:50AM0.06m
11:00PM-0.01m
11:39AM0.10m
11:22PM-0.00m
12:31PM0.14m
11:45PM0.02m
1:34PM0.18m
00:09AM0.04m
3:00PM0.20m
00:37AM0.07m
5:26PM0.20m
1:16AM0.10m
part cloud
clear
clear
part cloud
part cloud
clear
part cloud
clear
clear
clear
clear
clear
part cloud
clear
clear
part cloud
clear
clear
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:09
6:09
6:09
6:09
6:09
6:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:29
6:28
6:28
6:27
6:25
6:24
6:23
 mm
Temp °C
28
26
27
28
26
28
28
26
28
28
27
29
28
27
30
29
27
29
29
27
Feels °C
32
30
29
30
30
31
30
29
30
30
31
32
31
30
33
32
31
32
33
31
  • 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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