Sixtynine Surf Break

Lat Long: 19.98° N 155.84° W

Sixtynine Surf Forecast and Surf Report

Issued: 1 pm 26 Aug 2026 (local time)

Forecast update in  hr  min

Today's Sixtynine sea temperature is
27.7°C
1.1° 

Sixtynine surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Sixtynine surf forecast from 27 Aug 2026:

  • Most powerful swell: Sunday 30 Aug, 5AM (local time) - 1ft (0.3m), 16s period, SW swell with 43 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 16s and forecast to arrive on Sunday (Aug 30) at 5AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 8s period and expected on Wednesday (Sep 02) at 8AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 5AM (Sun 30th Aug)1ft (0.3m) 16s

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


The Lowdown

Alright, I’m looking at the charts for your area, and I’ve gotta be straight with you – it’s a tough stretch ahead. We’re looking at a long, slow run of tiny, poor surf, and honestly, I wouldn’t paddle out for most of it. Let’s break it down.

The first real chance of waves comes in on Wednesday afternoon, August 26th, but it’s a no-go – zero combined swell energy, just a light cross-shore breeze. That sets the tone for the next few days. We’ve got a gap from the 26th through to the 31st of August where the wave heights are barely a ripple, mostly 0.3 ft to 0.7 ft, with cross-shore winds and no real swell energy to speak of. The combined energy values are all in the single digits or zero (0 to 9), which is basically flat. It’s a tough stretch for a surf check.

Then, come Monday, August 31st, we finally see a pulse. The morning shows a 1.0 ft south-west swell with a 15-second period, and combined energy climbs to 33. That’s still weak, but it’s the most we’ve seen. The wind is moderate cross-shore, so it’s not clean, but it’s something. The swell direction is from the south-west, which is a bit off the optimum west-north-west for the break, and with such a long period (15 seconds), it’s likely to be a bit too lined up for the beach, but it’s a start.

After that, we hit another quiet patch from September 1st to the 4th, with nothing above 0.7 ft and combined energy dropping back to zero or single digits. Winds are variable, sometimes glassy, but no swell to work with.

The real window of interest gets going on Tuesday, September 8th. The afternoon glass-off with a 1.0 ft south-west swell, 15-second period, and combined energy of 62 – that’s the best we’ve seen so far. The glassy wind is a huge plus, but the swell is still small. It’s a promising but low-energy start.

Wednesday, September 9th, kicks up a notch. The afternoon sees a 1 ft west-north-west swell, 13-second period, and combined energy of 58. The wind is a fresh cross-offshore breeze (19 mph), which will keep the surface clean. That’s your best bet for the whole window – consistent, clean, and a little more push.

Then Thursday, September 10th, gets interesting for the wrong reasons. The morning rain showers bring a strong cross-offshore breeze (28 mph) and a 1 ft west-north-west swell, with combined energy of 88. The afternoon cranks it up to a 2 ft west swell, 14-second period, and combined energy of 152. That’s moderate wave energy, the strongest in the forecast. But the wind is strong (25 mph) and the swell is still small. With that wind strength and the beach setup, I’d say this is looking more like a kite-surfing day than a solid paddle session.

The water temp is 82°F, about a touch warmer than normal for this time of year – so a nice warm bath to go with the small waves.

Overall, the standout is the afternoon of Wednesday, September 9th at Sixtynine. It’s consistent, the wind is clean, and the swell is the best of a disappointing bunch. The Thursday the 10th has more energy, but the wind is too strong for comfortable surfing. Keep your expectations low, and you might find a few fun ones.

Rusty

Short Range Forecast

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

Days 5-7 Weather Summary

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

Wed
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
31
Tuesday
1
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)
0.7
NE
5
0.2
W
10
0.2
SSW
16
0.2
N
8
0.2
N
7
0.2
W
11
0.2
W
10
0.2
W
10
0.1
SW
18
0.9
NE
6
0.7
NNE
6
0.8
NNE
7
0.9
NNE
7
0.3
SW
15
0.3
SW
15
0.2
W
12
0.7
NNE
8
0.9
NNE
8
0.1
SW
14
0.1
SW
14
Wave Graph
Metric surfscale
Energy kJ
0
8
0
5
4
9
8
8
12
0
0
0
0
35
33
11
0
0
8
8
Wind (km/h)
10
NNE
15
NE
10
NNE
5
NNE
10
NE
10
NNE
15
NNE
10
ENE
15
NNE
5
NNE
5
NE
10
N
10
NNE
10
ENE
20
NNE
20
NNE
5
WSW
10
NW
5
NW
0
NE
Wind State
cross
cross-off
cross
cross
cross-off
cross
cross
cross-off
cross
cross
cross-off
cross-on
cross
cross-off
cross
cross
glassy
on
glassy
glassy
High Tide
3:28PM0.72m
3:36AM0.38m
3:56PM0.71m
4:12AM0.43m
4:24PM0.68m
4:50AM0.48m
4:52PM0.63m
5:31AM0.53m
5:21PM0.56m
6:15AM0.57m
5:51PM0.48m
7:06AM0.60m
6:23PM0.39m
Low Tide
10:13PM0.05m
9:11AM0.01m
10:35PM0.03m
9:51AM0.02m
10:57PM0.01m
10:34AM0.05m
11:20PM-0.01m
11:21AM0.09m
11:45PM-0.02m
12:16PM0.14m
00:12AM-0.02m
1:23PM0.19m
00:44AM-0.01m
clear
part cloud
clear
part cloud
clear
clear
part cloud
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:05
6:05
6:07
6:07
6:07
6:07
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:43
6:43
6:42
6:40
6:39
6:38
6:37
 mm
Temp °C
28
26
28
27
26
28
28
26
28
28
26
28
28
26
28
29
27
28
28
27
Feels °C
29
27
29
29
29
29
29
28
29
31
29
30
30
29
28
28
29
31
32
32
  • 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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