Sixtynine Surf Break

Lat Long: 19.98° N 155.84° W

Sixtynine Surf Forecast and Surf Report

Issued: 1 pm 30 Jul 2026 (local time)

Forecast update in  hr  min

Today's Sixtynine sea temperature is
26.9° 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 31 Jul 2026:

  • Most powerful swell: Thursday 30 Jul, 8PM (local time) - 1ft (0.3m), 18s period, SW swell with 49 kJ wave energy.

Best Forecast Surf Conditions for Sixtynine this week:

The most powerful waves expected at Sixtynine in the next 16 days are 0.3m 18s and forecast to arrive on Thursday (Jul 30) at 8PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 6s period and expected on Friday (Jul 31) at 5PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 8PM (Thu 30th Jul)1ft (0.3m) 18s

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


The Lowdown

Alright, Rusty here. Let’s break down what’s coming.

Honestly, for the next week and a half, it’s flat and frustrating. From now through the 8th of August, there’s basically nothing. The swell is tiny, mostly from the north or southwest, with periods so short the waves barely have any shape. Combined energy is in the single digits or low teens – that’s weak. The wind is light and cross-shore, but it doesn’t matter when there’s no surf.

Then, on the 9th of August, we finally see a pulse. Sunday morning brings a 0.6m west swell with a 15-second period – that’s groundswell, proper lines. Combined energy hits 201 (moderate), but the wind is onshore, so it’s not clean. By Sunday afternoon, the wind goes glassy calm, the swell bumps to 0.7m, still from the west at 15 seconds, and energy at 233 (moderate). That’s the first real chance. Water temp is about 80°, which is just a touch warmer than usual for this time of year.

The real standout is the 12th of August. Wednesday afternoon has a 0.9m west swell, period 13 seconds, combined energy at 315 (moderate), and glassy conditions with almost no wind. That’s the best of the bunch. The break is Sixtynine – it’s consistent, fairly exposed to west-northwest swells, which is exactly where this swell is coming from. It’s an intermediate spot, and with crowds sometimes, you might have a few others out, but nothing too hectic. The swell direction is a perfect match for the optimum.

After that, the 13th and 14th drop off a bit, with waist-high waves but less energy and more cross-onshore or light onshore wind. Still surfable, but not as good.

So, bottom line: the first week is a write-off. The best day is the 12th of August. That Wednesday afternoon at Sixtynine is glassy, clean, and has a solid west swell. That’s the one to aim for.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 29°C on Fri morning, min 24°C on Sat night). Wind will be generally light.

Days 5-7 Weather Summary

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

Thu
30
Friday
31
Saturday
1
Sunday
2
Monday
3
Tuesday
4
Wednesday
5
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)
0.3
SW
18
0.3
SW
16
0.4
SW
16
0.2
N
9
0.2
N
8
0.2
N
8
0.3
SW
14
0.2
N
11
0.3
N
10
0.3
N
9
0.2
N
9
0.2
W
11
0.7
NNE
6
0.2
W
12
0.3
N
6
0.8
NE
6
0.4
ENE
10
0.2
W
12
0.2
W
11
0.3
NE
8
Wave Graph
Metric surfscale
Energy kJ
49
41
0
6
5
5
29
9
16
15
6
10
0
11
7
0
0
11
10
0
Wind (km/h)
5
N
10
NE
15
NNE
15
NNE
10
NNE
20
NNE
20
NE
10
NE
10
NNE
5
NNE
10
ENE
5
NW
5
WNW
5
WNW
5
WNW
5
W
0
WSW
5
W
5
N
10
ENE
Wind State
glassy
cross-off
cross
cross
cross-off
cross
cross-off
cross-off
cross
cross-off
cross-off
on
glassy
glassy
on
cross-on
glassy
glassy
glassy
cross-off
High Tide
4:59PM0.74m
5:14AM0.34m
5:28PM0.71m
5:58AM0.38m
5:56PM0.66m
6:46AM0.42m
6:25PM0.59m
7:40AM0.47m
6:56PM0.51m
8:43AM0.52m
7:30PM0.41m
9:54AM0.57m
8:12PM0.32m
Low Tide
11:55PM0.04m
10:35AM0.03m
00:20AM0.03m
11:18AM0.08m
00:46AM0.02m
12:07PM0.14m
1:13AM0.01m
1:09PM0.20m
1:44AM-0.00m
2:34PM0.25m
2:20AM-0.00m
4:37PM0.27m
3:05AM-0.01m
part cloud
clear
clear
clear
clear
clear
part cloud
clear
clear
part cloud
clear
clear
part cloud
clear
clear
part cloud
part cloud
part cloud
cloud
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:58
5:58
5:58
5:58
5:58
6:00
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:00
7:00
7:00
6:59
6:59
6:58
6:58
 mm
1
Temp °C
28
26
29
29
26
28
27
25
28
28
25
28
28
26
28
28
26
27
27
26
Feels °C
32
29
30
30
26
27
28
24
30
30
27
30
29
29
31
31
30
30
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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