Sixtynine Surf Break

Lat Long: 19.98° N 155.84° W

Sixtynine Surf Forecast and Surf Report

Issued: 7 pm 13 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 14 Sep 2026:

  • Best quality surf: Tuesday 15 Sep, 5AM (local time) - 1ft (0.3m), 21s period, SW swell with glassy winds.
  • Most powerful swell: Wednesday 16 Sep, 11PM (local time) - 1.5ft (0.4m), 18s period, SW swell with 108 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. 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 18s and forecast to arrive on Wednesday (Sep 16) 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 1.1m 7s period and expected on Thursday (Sep 17) 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 Powerful11PM (Wed 16th Sep)1.5ft (0.4m) 18s

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


The Lowdown

Alright, let’s take a look at what’s cooking for Sixtynine. Honestly, straight up, it’s a pretty bleak start. The first week or so is almost a write-off.

Right now, around Monday morning the 14th of September, we’ve got a tiny 0.7 ft swell from the west, with a long 10 second period, but the energy is weak – only 18 in the tank. The wind is light offshore from the northwest, so the vibe is there, but the ocean just isn't cooperating. That "poor surf conditions" tag is spot on. Monday afternoon goes flat, and we stay flat or near-flat through the rest of the week and into the next. Tuesday the 15th, Wednesday the 16th – nothing. You get the odd little knee-high blip, like a 0.3 ft bump from the southwest on Wednesday morning, but that’s just not going to get you out of bed.

We’ve got a couple of glassy afternoons here and there, like Thursday the 17th and Friday the 18th, but there’s no swell to ride. It’s just clean, flat water. This pattern of tiny energy readings – like 3, 8, 12 – keeps up right through to the 25th of September. There’s a period on Sunday the 20th where a 1.0 ft swell shows up from the southwest with a very long 15 second period, giving a combined energy of 33, but the wind is a messy cross-shore, and the wave comment still says poor. It’s a tease.

The real standout window starts to appear around the very end of the month. Let’s look at Sunday afternoon the 27th of September. We finally get something that breaks the dry spell. A 1 ft swell from the northwest with a 17 second period – that’s a proper long-period groundswell. The energy climbs to 72, and the wind goes glassy out of the northwest. Conditions start to look clean, and the comment upgrades to "surfable waves but very ordinary conditions." It’s not pumping, but it’s the first real glimmer of hope.

Then, Monday the 28th of September afternoon is where it gets interesting. We’ve got a 2 ft swell, also from the west-northwest, with a 15 second period. The combined energy jumps to 142, which is moderate energy and the best we’ve seen in the whole forecast. The wind is glassy again. Best bet is to be there Monday afternoon. That 2 ft at that period on a consistent break like Sixtynine will offer some fun, clean waves. Remember, that long period groundswell is better suited for point breaks and reefs than a beach break, but with glassy conditions, it should still be good.

Overall, if you’ve got a paddle board, you might find something to do earlier, but for a surfboard, wait for the 27th and 28th. The 28th afternoon is the pick of the entire 16-day window. It’s a long way out, so keep your fingers crossed, but it’s something to aim for.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 30°C on Wed morning, min 25°C on Sun night). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 8mm), mostly falling on Thu afternoon. Warm (max 29°C on Fri morning, min 25°C on Fri night). Wind will be generally light.

Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
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
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
0.2
W
10
0.7
NNE
8
0.7
NNE
8
0.4
SW
20
0.4
SW
19
0.4
SW
19
0.1
SW
8
0.5
SW
18
0.4
SW
17
0.4
SW
16
1.1
NE
7
0.5
SW
17
0.4
SW
18
0.2
WSW
9
0.5
SW
16
0.4
SW
16
1.1
NE
7
0.4
SW
15
Wave Graph
Metric surfscale
Energy kJ
9
8
0
0
0
0
0
3
0
0
0
0
0
0
8
0
0
0
0
Wind (km/h)
10
NE
5
NW
5
WNW
0
N
5
WNW
5
NW
10
NE
15
NNE
20
NNE
15
NE
10
WNW
5
NNE
5
NE
5
WNW
5
NNE
5
N
5
N
5
NNW
10
NE
Wind State
cross-off
on
glassy
glassy
on
glassy
cross-off
cross
cross-off
cross-off
on
glassy
cross-off
on
glassy
glassy
cross
glassy
cross-off
High Tide
6:08AM0.62m
5:43PM0.39m
6:50AM0.62m
6:10PM0.32m
7:39AM0.59m
6:37PM0.25m
8:41AM0.57m
7:08PM0.20m
10:00AM0.55m
9:49PM0.17m
11:20AM0.56m
00:02AM0.19m
Low Tide
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
7:14PM0.16m
2:31AM0.12m
7:39PM0.13m
4:23AM0.13m
part cloud
clear
part cloud
clear
clear
part cloud
clear
clear
part cloud
clear
part cloud
thunderstorm
thunderstorm
clear
thunderstorm
thunderstorm
part cloud
thunderstorm
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:09
6:09
6:09
6:11
6:11
6:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:28
6:27
6:25
6:24
6:23
6:22
6:22
 mm
2
2
2
1
1
Temp °C
26
28
29
27
28
28
27
30
30
27
28
28
27
29
28
27
28
28
27
Feels °C
30
30
32
32
31
31
30
32
31
29
31
32
31
32
31
30
31
31
31
  • 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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