Tunnels Surf Break

Lat Long: 22.23° N 159.56° W

Tunnels Surf Forecast and Surf Report

Issued: 7 pm 11 Aug 2026 (local time)

Forecast update in  hr  min

Today's Tunnels sea temperature is
26.9° C
0.2° 

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


Tunnels surf forecast from 12 Aug 2026:

  • Best quality surf: Wednesday 12 Aug, 5AM (local time) - 3.5ft (1.0m), 7s period, E swell with cross-offshore winds.
  • Most powerful swell: Sunday 16 Aug, 5PM (local time) - 13ft (4.0m), 11s period, E swell with 4,043 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 12 Aug, 5AM (local time) - 3.5ft (1.0m), 7s period with E swell.

Best Forecast Surf Conditions for Tunnels this week:

The surf forecast for Tunnels over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 12) at 5AM. The primary swell is predicted to be 1.0m and 7s period with a secondary swell of 0.4m and 13s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Tunnels in the next 16 days are 4.0m 11s and forecast to arrive on Sunday (Aug 16) at 5PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 13s period and expected on Sunday (Aug 16) at 5PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Wed 12th Aug)3.5ft (1.0m) 7s
Best Surf 5AM (Wed 12th Aug)3.5ft (1.0m) 7s
Most Powerful 5PM (Sun 16th Aug)13ft (4.0m) 11s

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


The Lowdown

G’day, this is Rusty. Let’s have a yarn about the next couple of weeks at Tunnels.

Look, I’m gonna be straight with you – the first half of the outlook is a real struggle. We’ve got a long stretch of poor surf conditions with very little to get excited about. From Wednesday the 12th right through to the end of the week, the swell is small and weak – around 3ft to 4ft from the east, with a short, choppy period of just 7 seconds. The combined energy is low, sitting between 131 and 161 (weak energy), and the wind is cross or cross-off, keeping things messy. It’s a tough start.

We finally get a bit of a pulse starting Friday morning the 14th. Swell lifts to 5ft from the east, period stretches to 8 seconds, and the combined energy jumps to 288 (moderate). The morning has clean conditions with a cross-off breeze, so it’s looking a bit more promising. But it’s still only marginal, and the afternoon goes back to poor with cross-shore chop.

Saturday the 15th sees a bigger, more powerful swell roll in – 7ft from the east, period up to 12 seconds, and combined energy surging to 1414 (strong). That’s a proper groundswell. The wind is cross though, and with rain showers around, the surface gets lumpy. This swell is getting into the size range that’s best left for experienced surfers – over 8ft on Sunday afternoon, so definitely not for beginners.

The standout window is Sunday the 16th. The afternoon is the pick of the whole forecast. We’re looking at 13ft of east swell, 11-second period, and combined energy of 4127 (very strong). The wind is cross-off and clean, with moderate breeze. That’s a serious, powerful groundswell with clean conditions. This is a big, expert-only wave – Tunnels will be firing but it’s going to be heavy and demanding. The long period works well on this reef, but the size means it’s only for the crew who know what they’re doing.

Monday the 17th still has decent size – 8ft in the morning, dropping to 6ft in the afternoon – with clean cross-off winds. The period drops to 8 seconds though, so it’s less powerful than the day before. Still a good option for those who missed Sunday.

After that, the surf fades fast. From Tuesday the 18th through to the end of the month, we’re back to small, weak easterly swell – 2ft to 5ft, periods mostly 6-8 seconds, and combined energy mostly under 200 (weak). There are a few clean mornings with cross-off winds, but the waves are just too small and gutless to recommend. The 27th of August shows a little uptick – 5ft, 8 seconds, clean conditions – but it’s still marginal.

Overall, the one true standout is Sunday afternoon the 16th. It’s a big, clean, powerful groundswell for experts only. If you’re experienced and hungry, that’s your session. The rest of the window is mostly a waiting game.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Thu night. Warm (max 27°C on Wed morning, min 24°C on Tue night). Wind will be generally light.

Days 5-7 Weather Summary

Heavy rain (total 39mm), heaviest during Sun morning. Warm (max 28°C on Mon afternoon, min 25°C on Fri night). Winds decreasing (strong winds from the ENE on Sun morning, light winds from the ESE by Sun night).

Wednesday
12
Thursday
13
Friday
14
Saturday
15
Sunday
16
Monday
17
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
1
1
0
1
1
1
2
1
3
3
2
1
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1
E
7
1
E
7
1.1
E
7
1.1
E
7
1.2
E
7
1.2
ENE
7
1.4
ENE
7
1.5
E
8
1.6
ENE
8
1.8
E
8
2.2
E
12
2.3
E
11
3
E
11
2.4
ENE
10
4
E
11
3
E
9
2.3
E
8
1.9
E
8
1.5
E
8
Wave Graph
Metric surfscale
Energy kJ
108
106
121
107
130
131
186
258
333
461
1346
1230
1873
1022
4043
1552
727
476
258
Wind (km/h)
15
ESE
20
E
20
ENE
15
ESE
15
ENE
20
ENE
20
E
20
E
20
ENE
20
E
25
ENE
30
ENE
30
ENE
40
E
25
ESE
20
SE
15
E
20
E
20
E
Wind State
cross-off
cross-off
cross
cross-off
cross
cross
cross-off
cross-off
cross
cross-off
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
2:06AM0.33m
3:01PM0.78m
2:55AM0.38m
3:34PM0.73m
3:43AM0.42m
4:04PM0.66m
4:34AM0.46m
4:31PM0.57m
5:27AM0.49m
4:52PM0.48m
6:26AM0.51m
5:06PM0.40m
Low Tide
8:55PM0.11m
7:19AM-0.04m
9:19PM0.10m
8:06AM-0.01m
9:44PM0.09m
8:52AM0.05m
10:08PM0.08m
9:40AM0.12m
10:32PM0.07m
10:33AM0.19m
10:57PM0.07m
11:43AM0.25m
11:24PM0.07m
clear
clear
clear
part cloud
clear
clear
rain showers
part cloud
part cloud
rain showers
rain showers
rain showers
rain showers
thunderstorm
thunderstorm
thunderstorm
clear
thunderstorm
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:13
6:13
6:15
6:15
6:15
6:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:12
7:10
7:10
7:09
7:08
7:07
7:07
 mm
1
1
2
3
10
16
3
3
1
1
Temp °C
25
27
27
25
27
27
25
26
27
26
26
26
25
26
26
26
27
28
25
Feels °C
27
27
27
25
27
26
26
26
27
26
26
26
25
24
25
26
29
29
27
  • 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 Tunnels Surf forecast

The above surf forecast table for Tunnels provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Tunnels can be found by selecting the local surf guide option on the grey menu. Our Tunnels 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 (Tunnels) 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 Tunnels 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.

Are you planning a vacation in Kaua'i? If you are looking for accommodation near Tunnels, camping, hotels and condos and appartments in Kaua'i, consider staying in Lihue - Kauai which is 36 km (22 miles) away. Alternatively, find information about places to stay and car hire in Nawiliwili which is 36 km (22 miles) away

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