Tunnels Surf Break

Lat Long: 21.15° N 157.29° W

Tunnels Surf Forecast and Surf Report

Issued: 1 am 20 Aug 2026 (local time)

Forecast update in  hr  min

Today's Tunnels sea temperature is
26.6° 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 20 Aug 2026:

  • Best quality surf: Thursday 20 Aug, 11AM (local time) - 2ft (0.6m), 18s period, SW swell with cross-offshore winds.
  • Most powerful swell: Thursday 27 Aug, 8AM (local time) - 3.5ft (1.1m), 17s period, S swell with 691 kJ wave energy.
  • Next surfable swell (1★+): Thursday 20 Aug, 11AM (local time) - 2ft (0.6m), 18s period with SW 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 11AM. The primary swell is predicted to be 0.6m and 18s 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 1.1m 17s and forecast to arrive on Thursday (Aug 27) at 8AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Saturday (Aug 22) at 8PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)11AM (Thu 20th Aug)2ft (0.6m) 18s
Best Surf11AM (Thu 20th Aug)2ft (0.6m) 18s
Most Powerful 8AM (Thu 27th Aug)3.5ft (1.1m) 17s

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


The Lowdown

Alright, let’s get this surf report done proper.

First up, looking at the whole 16-day window for Tunnels, it’s a bit of a mixed bag but there is a proper window of opportunity in the first few days, then a long stretch of meh, before a promising little window pops up right at the end. The standout action is definitely on the first Thursday and Friday morning.

We kick off on Thursday the 20th of August morning. The water sits at 80°, which is dead average for this time of year. The swell is coming from the SW at 2ft with a very long period of 18 seconds. That's groundswell energy for sure, with moderate energy reading (249). That long period will make the waves shape up well here at Tunnels, but that kind of period can make beach breaks a bit straight; Tunnels is exposed and handles this nicely. The wind is a light NNE cross-off at 6 mph, keeping things clean. That’s the best session on offer. The afternoon sees the wind pick up to 12 mph and go cross-shore, which messes it up.

Friday the 21st of August morning is another clean one. Swell holds at 2ft from the SW, still a long 17-second period, and the wind drops to a glassy 3 mph cross-off. Energy bumps up a bit (353). That’s a solid morning for intermediate surfers. The afternoon stays clean with a light NE breeze.

Now, from Saturday the 22nd of August through to basically the end of the month, we hit a real dry spell. The wind cranks up from the ENE, hitting 19-25 mph, and stays cross-off. The swell is tiny, mostly 2ft to 2ft, and while the period stays moderate, the conditions are blown out. The combined energy fluctuates but it’s all poor surf conditions. That stretch lasts over a week.

Into the first week of September, it’s still poor. The wind stays strong from the ENE and NE through Tuesday the 2nd. The swell remains small and weak. It’s a real blank run for good waves.

Then we get a flicker of hope. Thursday the 3rd of September morning, the wind goes glassy from the south at 3 mph, a proper rarity. Swell is 3ft from the south with a 12-second period, energy at 228. That is a clean, fun-sized morning. The glassy conditions make it a standout.

Friday the 4th of September morning also looks good. Another glassy start with wind from the NE at 3 mph. Swell picks up energy at 233 from a 2ft, 14-second period from the west. That afternoon the swell really bumps up in energy to 414 with a 19-second period from the south, but it’s marginal due to the wind picking up. Still, the morning on Friday the 4th is a quality, clean option.

So overall, the best bet is the first Thursday and Friday morning, August 20-21. The late run on September 3rd and 4th mornings is worth keeping an eye on, but it’s further out, so less certain. Crowds are often here at Tunnels, so expect company on those good days.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 28°C on Fri afternoon, min 25°C on Thu morning). Winds increasing (calm on Fri morning, fresh winds from the ENE by Sat afternoon).

Days 4-6 Weather Summary

Mostly dry. Warm (max 27°C on Mon afternoon, min 25°C on Sun morning). Mainly fresh winds.

Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
0
2
2
2
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
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
SSW
15
0.5
SW
14
0.7
SSW
14
0.7
SSW
13
0.6
SSW
13
0.5
SSW
16
0.6
SSW
16
0.5
S
18
0.7
SSW
14
0.8
S
18
0.6
S
18
Wave Graph
Metric surfscale
Energy kJ
249
200
278
295
201
322
261
255
150
144
135
100
166
156
129
146
196
165
218
395
229
Wind (km/h)
10
NE
20
NNE
10
E
5
NE
15
NE
15
ENE
30
ENE
35
ENE
35
ENE
40
ENE
40
ENE
35
ENE
35
ENE
30
ENE
25
E
30
E
30
ENE
30
ENE
30
ENE
30
ENE
25
ENE
Wind State
cross-off
cross
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
11:09AM0.58m
12:10PM0.62m
12:53PM0.66m
11:49PM0.25m
1:28PM0.69m
00:44AM0.28m
1:58PM0.72m
1:24AM0.32m
2:25PM0.73m
2:01AM0.36m
2:50PM0.73m
2:37AM0.40m
Low Tide
2:37AM0.16m
4:10AM0.16m
9:14PM0.24m
5:23AM0.13m
9:06PM0.23m
6:15AM0.10m
9:12PM0.21m
6:59AM0.09m
9:23PM0.20m
7:38AM0.08m
9:36PM0.18m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:09
6:09
6:09
6:09
6:09
6:09
6:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:54
6:53
6:52
6:52
6:52
6:51
6:50
 mm
Temp °C
26
27
26
26
28
27
27
26
26
26
26
25
26
27
26
26
27
26
26
26
25
Feels °C
29
29
28
30
30
28
26
24
25
24
24
22
24
26
26
25
26
26
25
25
24
  • 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 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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