Sixtynine Surf Break

Lat Long: 19.98° N 155.84° W

Sixtynine Surf Forecast and Surf Report

Issued: 7 am 08 Sep 2026 (local time)

Forecast update in  hr  min

Today's Sixtynine sea temperature is
27.5°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 8 Sep 2026:

  • Best quality surf: Tuesday 8 Sep, 8PM (local time) - 4ft (1.2m), 9s period, W swell with glassy winds.
  • Most powerful swell: Tuesday 8 Sep, 2PM (local time) - 6.5ft (2.0m), 10s period, WSW swell with 810 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 8 Sep, 8PM (local time) - 4ft (1.2m), 9s period with W 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 08) at 8PM. The primary swell is predicted to be 1.2m and 9s 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 2.0m 10s and forecast to arrive on Tuesday (Sep 08) at 2PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 11s period and expected on Tuesday (Sep 08) at 2PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Tue 8th Sep)4ft (1.2m) 9s
Best Surf 8PM (Tue 8th Sep)4ft (1.2m) 9s
Most Powerful 2PM (Tue 8th Sep)6.5ft (2.0m) 10s

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


The Lowdown

Right, folks, Rusty here. Let’s have a look at what’s on offer at Sixtynine over the next couple of weeks.

Straight up, I’ve got to be honest with you – this is a tough one. This region is looking at a long, dry spell. The surf is basically a no-show for a solid week and a half. From the 8th of September right through to the 16th, it’s all poor surf conditions with tiny, weak swell and messy winds. The morning of the 16th is still flat, but the afternoon shows a glimmer of hope with a 1ft groundswell, but it’s a very ordinary setup.

The real standout window, and the only time I’d even consider paddling out, hits on the afternoon of Wednesday the 16th of September. Now, this is a long-range call so don’t take it to the bank, but the data has a decent pulse. You’ll see a 1ft swell from the SW with a very long period of 18 seconds and moderate wave energy (109). The wind is glassy, which is a massive plus – it’ll be dead clean. The crowd factor at Sixtynine says “sometimes,” so you might have company, but with the swell this small, it won’t be a zoo. The water temp is 82°F, which is about par for the course for this time of year.

The main issue here is that the long period groundswell at a spot that’s fairly exposed to the WNW, while the swell is coming from the SW. It might not light up perfectly. For a beach or beach-and-reef setup, that 18-second period can make waves break a bit too straight. It’s a better bet for a point or reef, but if you’re desperate for a glide, this is your only real shot.

After that, it’s back to the doldrums. The 17th and 18th have tiny, insignificant waves, and from the 19th of September onward, it’s mostly flat with zero energy. The morning of the 23rd of September sees a tiny 1ft SW groundswell with 18-second period and 76 energy, but the wind is cross-onshore, which will ruin it. The afternoon of the 23rd is similar but with onshore wind. Not worth a look.

The water stays warm, but that’s about all the good news. If you’re a kite surfer, the afternoon of the 8th of September had a 6ft swell with a cross-onshore breeze, but for paddle surfing, it’s a no-go. We’re looking at a solid 8-day gap with no recommendations, and then just one very marginal afternoon. It’s a tough run, but it tends not to stay this poor for long and forecasts can change.

Rusty.

Short Range Forecast

Moderate rain (total 19mm), heaviest on Wed afternoon. Warm (max 30°C on Tue morning, min 26°C on Wed night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 29°C on Sun afternoon, min 25°C on Fri night). Wind will be generally light.

Tuesday
8
Wednesday
9
Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
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
1
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)
2.2
WSW
11
1.7
WSW
10
0.8
WNW
8
0.5
W
7
0.5
W
6
0.3
W
6
0.3
SW
16
0.3
SW
18
0.3
SW
10
0.4
SW
10
0.4
SW
9
0.4
SW
15
0.2
WSW
8
0.3
SW
14
0.3
SW
14
0.7
NE
9
0.2
W
11
0.2
W
11
0.2
W
10
0.2
WNW
10
0.2
SSW
21
Wave Graph
Metric surfscale
Energy kJ
1101
551
85
22
20
6
42
49
16
23
21
0
7
29
29
0
9
9
8
10
0
Wind (km/h)
15
WSW
10
W
0
N
10
WNW
10
WSW
5
WNW
5
N
5
NNW
5
NE
5
NW
5
NNW
0
NNW
5
WNW
5
N
0
NW
5
NNW
5
NW
5
NNE
5
NNW
5
W
5
N
Wind State
cross-on
on
glassy
on
cross-on
glassy
cross
glassy
cross-off
on
glassy
glassy
on
glassy
glassy
cross-on
glassy
glassy
cross-on
glassy
glassy
High Tide
2:32PM0.75m
2:51AM0.39m
3:10PM0.73m
3:32AM0.46m
3:45PM0.69m
4:11AM0.53m
4:16PM0.63m
4:50AM0.58m
4:46PM0.55m
5:28AM0.61m
5:15PM0.47m
6:08AM0.62m
5:43PM0.39m
Low Tide
9:22PM0.01m
8:26AM-0.02m
9:48PM-0.01m
9:15AM-0.00m
10:13PM-0.02m
10:03AM0.02m
10:37PM-0.02m
10:50AM0.06m
11:00PM-0.01m
11:39AM0.10m
11:22PM-0.00m
12:31PM0.14m
11:45PM0.02m
part cloud
thunderstorm
thunderstorm
rain showers
rain showers
rain showers
rain showers
thunderstorm
thunderstorm
part cloud
part cloud
part cloud
clear
part cloud
clear
clear
part cloud
clear
clear
thunderstorm
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:09
6:09
6:09
6:09
6:09
6:09
6:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:31
6:30
6:30
6:29
6:28
6:28
6:27
 mm
1
2
1
5
6
1
2
1
1
Temp °C
30
29
28
29
28
27
28
28
27
28
28
27
28
28
27
28
29
27
29
29
27
Feels °C
32
31
34
33
32
32
32
32
31
31
31
31
31
31
31
31
32
32
32
33
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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