Sixtynine Surf Break

Lat Long: 19.98° N 155.84° W

Sixtynine Surf Forecast and Surf Report

Issued: 1 pm 03 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 4 Sep 2026:

  • Best quality surf: Monday 7 Sep, 8PM (local time) - 7.5ft (2.3m), 14s period, WSW swell with glassy winds.
  • Most powerful swell: Monday 7 Sep, 5PM (local time) - 7ft (2.2m), 14s period, WSW swell with 2,082 kJ wave energy.
  • Next surfable swell (1★+): Sunday 6 Sep, 5PM (local time) - 3.5ft (1.1m), 12s 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 Sunday (Sep 06) at 5PM. The primary swell is predicted to be 1.1m and 12s 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 2.2m 14s and forecast to arrive on Monday (Sep 07) at 5PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 12s period and expected on Sunday (Sep 06) at 11AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 5PM (Sun 6th Sep)3.5ft (1.1m) 12s
Best Surf 8PM (Mon 7th Sep)7.5ft (2.3m) 14s
Most Powerful 5PM (Mon 7th Sep)7ft (2.2m) 14s

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


The Lowdown

Alright, Rusty here again, switching to the old-school numbers. Let’s break down the same forecast for Sixtynine.

The first few days? Total flat spell. Don’t even look at the water until Sunday the 6th of September. Nothing but poor, flat conditions from now until then.

But Sunday afternoon, the 6th, we get a glimmer. A 4ft southwest swell rolls in with a 12-second period, giving it some shape. The wind goes glassy, so it’ll be smooth as butter. The water’s at 82°F, pretty normal for this time of year.

The real highlight, the one you don’t want to miss, is Monday morning, the 7th of September. That’s the best of the whole run. We’ve got a solid 6ft groundswell from the southwest, with a long 14-second period. That’s a lot of energy (1307), and with glassy, offshore winds from the west, it’s going to be absolutely perfect. Intermediate surfers, this is your session. Clean, lined-up, and full of juice.

Monday afternoon gets bigger, hitting 7ft from the west-southwest, but the wind goes onshore and the tide gets tricky. That’s expert territory. By Tuesday the 8th, the swell drops to 5ft, but the onshore wind is still there, making it messy. After that, the second week goes quiet again. Tiny pulses of long-period swell (over 15 seconds) show up, but they’re barely 1ft and have no power. Not worth the paddle.

So, bottom line: the first week is a snooze until Sunday. The standout is Monday morning. Don’t sleep on it.

Rusty.

Short Range Forecast

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

Days 5-7 Weather Summary

Light rain (total 8mm), mostly falling on Sun afternoon. Warm (max 30°C on Tue morning, min 26°C on Sun night). Wind will be generally light.

Thu
3
Friday
4
Saturday
5
Sunday
6
Monday
7
Tuesday
8
Wednesday
9
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
2
2
3
3
3
1
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)
0.1
W
9
0.9
NE
6
0.5
S
13
0.6
SSW
12
0.5
SSW
11
0.7
SSW
12
0.8
SSW
12
0.9
SSW
12
1.1
SW
12
1.1
SW
12
1.3
SW
13
1.8
SW
14
2.2
WSW
14
2.1
WSW
12
1.5
W
10
1.1
W
10
0.6
W
7
0.4
SW
8
0.7
NE
6
0.3
SSW
13
Wave Graph
Metric surfscale
Energy kJ
2
0
0
0
0
0
0
0
0
380
618
1307
2082
1158
461
231
37
20
0
0
Wind (km/h)
20
NE
15
ENE
10
NNE
15
NE
5
NE
5
NNW
5
W
5
ENE
5
NW
5
WNW
0
NE
5
W
5
W
5
S
10
WNW
5
NW
0
WSW
10
NNE
15
NE
15
NE
Wind State
cross-off
cross-off
cross
cross-off
cross-off
cross-on
glassy
cross-off
cross-on
glassy
glassy
glassy
on
glassy
on
on
glassy
cross
cross-off
cross-off
High Tide
7:55PM0.22m
10:42AM0.65m
10:08PM0.17m
11:57AM0.69m
00:08AM0.19m
12:59PM0.72m
1:17AM0.24m
1:49PM0.75m
2:08AM0.31m
2:32PM0.75m
2:51AM0.39m
3:10PM0.73m
3:32AM0.46m
Low Tide
5:16PM0.20m
2:19AM0.02m
7:06PM0.15m
3:40AM0.04m
7:52PM0.09m
5:12AM0.03m
8:26PM0.06m
6:29AM0.01m
8:55PM0.03m
7:32AM-0.01m
9:22PM0.01m
8:26AM-0.02m
9:48PM-0.01m
part cloud
part cloud
clear
part cloud
clear
clear
part cloud
clear
part cloud
thunderstorm
rain showers
part cloud
part cloud
clear
clear
thunderstorm
rain showers
clear
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:07
6:07
6:07
6:09
6:09
6:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:37
6:36
6:35
6:34
6:32
6:31
6:30
 mm
3
2
2
1
Temp °C
28
26
28
28
25
28
28
26
28
28
27
28
29
28
30
28
27
29
29
26
Feels °C
29
27
30
30
25
30
31
30
31
32
32
32
32
32
33
32
32
31
31
27
  • 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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