Tunnels Surf Break

Lat Long: 21.15° N 157.29° W

Tunnels Surf Forecast and Surf Report

Issued: 1 pm 18 Aug 2026 (local time)

Forecast update in  hr  min

Today's Tunnels sea temperature is
26.8° C
0.1° 

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


Tunnels surf forecast from 19 Aug 2026:

  • Best quality surf: Thursday 20 Aug, 8PM (local time) - 2ft (0.6m), 17s period, SSW swell with cross-offshore winds.
  • Most powerful swell: Friday 21 Aug, 8AM (local time) - 2.5ft (0.8m), 17s period, SSW swell with 368 kJ wave energy.
  • Next surfable swell (1★+): Thursday 20 Aug, 8PM (local time) - 2ft (0.6m), 17s period with SSW 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 Thursday (Aug 20) at 8PM. The primary swell is predicted to be 0.6m and 17s period. 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 0.8m 17s and forecast to arrive on Friday (Aug 21) at 8AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.5m 7s period and expected on Monday (Aug 24) at 8PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Thu 20th Aug)2ft (0.6m) 17s
Best Surf 8PM (Thu 20th Aug)2ft (0.6m) 17s
Most Powerful 8AM (Fri 21st Aug)2.5ft (0.8m) 17s

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


The Lowdown

Alright folks, Rusty here. Let’s have a look at what Tunnels has got cooking for us over the next couple of weeks. Right off the bat, I gotta be straight with you – this is a frustrating outlook. We’ve got a whole lot of days with nothing but poor surf conditions, so don’t get your hopes up for the first week and a half. The first solid recommendation doesn’t turn up until late in the game.

We’re looking at Tunnels, a spot that’s fairly consistent and exposed to the open ocean. The water’s sitting at 80°, which is pretty much dead average for this time of year, so nothing weird going on there. But for days on end, we’re staring at small swell and cross-offshore winds that just aren’t doing us any favours. The energy is weak to moderate, with values mostly in the low hundreds – nothing that’ll get your heart racing.

There’s a narrow window of hope on the morning of Friday the 21st of August. The swell is a tiny 2 ft from the SW, but the period jumps up to 17 seconds. That long-period groundswell carries some real punch for its size – you can see the energy hit 330 (moderate wave energy), which is the best we’ll see for a while. The wind goes almost glassy, with a slight air from the NE, so it’ll be clean. That’s your standout morning, but it’s not big – more of a longboard or funboard kind of day. The shape should be good for a reef setup like Tunnels, but with that long period, it might break a bit straight. Still, this is your best bet by a long shot. Just keep in mind the crowds are often here, so expect company.

After that Friday morning, it’s back to the grind. From Saturday the 22nd all the way through to Tuesday the 1st of September, the forecast is grim. We’re looking at poor surf conditions day after day – fresh breezes from the ENE, small messy swell, and a whole lot of zeros on the scorecard. There’s a solid 10-day stretch where you might as well leave the board in the car.

Then, towards the very end, we get a glimmer. On Wednesday morning the 2nd of September, things start to look interesting. The swell bumps up to 4 ft from the south, with a 19-second period – that’s some proper groundswell energy. The wave energy rockets up to 1229 (strong to very strong), so there’s plenty of power behind it. The wind is moderate from the NE, keeping it cross-off. This one is for the experienced crew – 4 ft with that kind of period will pack a punch. It’s still a bit of a watch-and-see situation being that far out, but it’s the only real hope for something with a bit of push. The afternoon gets a cross-shore chop, so the morning is the go.

So, to sum it up: there’s nothing worth paddling out for until the morning of Friday the 21st of August for some tiny but clean long-period waves. Then it goes dead for over a week, and the real promise is the morning of Wednesday the 2nd of September, with a much stronger, bigger groundswell for the confident surfer. Keep an eye on that one.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 27°C on Thu afternoon, min 24°C on Tue night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Warm (max 27°C on Fri afternoon, min 25°C on Sat night). Winds increasing (light winds from the NNE on Fri afternoon, fresh winds from the ENE by Sun afternoon).

Tue
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
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
1
1
2
2
1
2
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
S
13
0.6
S
13
0.5
S
12
0.5
S
12
0.5
SW
16
0.6
SW
18
0.6
SSW
17
0.7
SW
16
0.7
SW
17
0.6
SW
16
0.8
SSW
16
0.7
SW
16
0.7
SW
16
0.6
SSW
15
0.6
SSW
15
0.5
SW
14
0.5
SW
14
0.6
SSW
14
0.7
SSW
13
0.4
SSW
17
Wave Graph
Metric surfscale
Energy kJ
162
117
69
71
129
249
200
278
295
201
322
261
255
152
144
102
100
143
156
94
Wind (km/h)
25
ENE
20
ENE
20
ENE
25
ENE
20
ENE
20
NE
20
NE
15
E
5
NE
15
NE
15
E
30
ENE
30
ENE
30
ENE
35
ENE
40
ENE
35
ENE
35
ENE
35
ENE
25
ENE
Wind State
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
cross-off
cross-off
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
4:39PM0.41m
9:38AM0.56m
11:09AM0.58m
12:10PM0.62m
12:53PM0.66m
11:49PM0.25m
1:28PM0.69m
00:44AM0.28m
1:58PM0.72m
1:24AM0.32m
Low Tide
2:29PM0.40m
00:47AM0.14m
1:26AM0.15m
2:37AM0.16m
4:10AM0.16m
9:14PM0.24m
5:23AM0.13m
9:06PM0.23m
6:15AM0.10m
9:12PM0.21m
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:07
6:09
6:09
6:09
6:09
6:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:57
6:55
6:54
6:53
6:52
6:52
6:52
 mm
Temp °C
26
25
25
26
25
26
27
26
26
27
26
27
27
26
26
26
25
26
26
25
Feels °C
24
24
26
26
25
28
28
27
30
29
27
26
26
25
24
24
23
24
24
24
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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 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 Molokai? If you are looking for accommodation near Tunnels, camping, hotels and condos and appartments in Molokai, consider staying in Kaunakakai - Molokai which is 20 km (12 miles) away. Other places in and around Molokai where you can find information about places to rent, and car hire include Lanai - Lanai which is 53 km (33 miles) away, Kailua, Honolulu and Kane'ohe.

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