Surf Forecasts:
Tunnels surf forecast from 21 Aug 2026:
- Most powerful swell: Thursday 27 Aug, 11AM (local time) - 4ft (1.2m), 17s period, S swell with 861 kJ wave energy.
Best Forecast Surf Conditions for Tunnels this week:
The most powerful waves expected at Tunnels in the next 16 days are 1.2m 17s and forecast to arrive on Thursday (Aug 27) at 11AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.0m 6s period and expected on Sunday (Aug 23) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11AM (Thu 27th Aug) | 4ft (1.2m) 17s |
Table - best surf conditions forecast for Tunnels over the next 16 days.
The Lowdown
Alright, Rusty here. Let's break down what's coming up.
Right off the bat, it's a slow start. We've got a small southwest swell, but the wind is going to be a real headache for the first week or so. Those trade winds are going to be cranking, making a mess of things. The water temp is sitting around 80°, which is pretty normal for this time of year.
The one window you need to have circled is Friday, September 4th, and into Saturday, September 5th. After a long, long stretch of windy conditions, the breeze finally looks like it's going to back off. On Friday morning at Tunnels, we're looking at a 2ft south swell with a light breeze. The energy is still low, but it's clean. That's your best bet for a paddle.
Then Saturday the 5th gets interesting. The morning is showing a 2ft southwest swell, but check the period – 20 seconds! That's a long period groundswell. The energy is moderate, and with a light breeze, it's going to be glassy. Keep in mind that a long period swell like that can make a beach break a bit wonky, but Tunnels is a reef, so it should handle it well and give you some nice, lined-up waves. Saturday afternoon keeps that light wind and a 1ft SSW swell with a 19-second period. It's small, but the quality could be surprisingly good.
The gap between now and that first decent window is a long one. You're looking at a solid two weeks of mostly poor conditions with strong onshore trades before that light wind window arrives. Be patient.
Rusty
Short Range ForecastMostly dry. Warm (max 28°C on Fri afternoon, min 25°C on Sat night). Winds increasing (light winds from the NE on Fri morning, fresh winds from the ENE by Sun afternoon). | Days 4-6 Weather SummaryMostly dry. Warm (max 27°C on Mon afternoon, min 25°C on Tue night). Mainly fresh winds. | ||||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | SW 17 | SW 16 | SSW 16 | SW 16 | SW 16 | SSW 15 | SSW 15 | SW 14 | SW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 16 | SSW 16 | S 18 | SSW 14 | S 18 | S 19 | S 17 | S 16 | S 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 295 | 201 | 322 | 261 | 255 | 152 | 144 | 102 | 100 | 166 | 201 | 127 | 146 | 196 | 165 | 218 | 399 | 448 | 861 | 412 | 582 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | 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 | 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 | 3:13PM0.72m | 3:15AM0.45m | ||||||||
Low Tide | 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 | 8:17AM0.09m | 9:52PM0.16m | |||||||||
 | |  | | | | | |  | | | | | | | | | | | | | |
 | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — |
 | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — | — | 6:49 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 28 | 27 | 27 | 27 | 26 | 26 | 26 | 25 | 26 | 27 | 26 | 26 | 27 | 26 | 25 | 26 | 25 | 25 | 26 | 25 |
Feels °C | 31 | 29 | 27 | 27 | 25 | 24 | 23 | 23 | 23 | 25 | 26 | 26 | 26 | 25 | 25 | 22 | 23 | 22 | 23 | 24 | 23 |
Swell 1 Height (m) Direction Period (s) | NE 7 | NE 7 | SSW 16 | ENE 7 | SW 16 | SSW 15 | SSW 15 | SW 14 | SW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 12 | SSW 16 | SSW 15 | SSW 14 | S 18 | S 19 | S 17 | S 16 | S 16 |
| kJ | 79 | 65 | 322 | 113 | 255 | 152 | 144 | 102 | 100 | 166 | 201 | 127 | 117 | 196 | 121 | 218 | 399 | 448 | 861 | 412 | 582 |
Swell 2 Height (m) Direction Period (s) | SW 17 | SW 16 | W 10 | SW 16 | W 10 | S 14 | S 13 | SSW 15 | S 13 | S 12 | SSE 12 | SSW 17 | SSW 16 | SSW 12 | SSW 12 | S 18 | SSW 12 | SSW 13 | WNW 10 | SSW 12 | E 15 |
| kJ | 295 | 201 | 48 | 261 | 53 | 103 | 90 | 76 | 86 | 76 | 48 | 93 | 146 | 81 | 81 | 163 | 45 | 135 | 10 | 55 | 112 |
Swell 3 Height (m) Direction Period (s) | W 11 | W 10 | S 13 | W 10 | S 12 | WNW 10 | WNW 11 | WNW 12 | SSW 15 | NW 12 | SSE 7 | SSE 12 | S 12 | SSE 6 | S 18 | S 21 | SSW 13 | SSW 16 | ENE 17 | ENE 16 | WNW 10 |
| kJ | 58 | 51 | 54 | 51 | 75 | 33 | 47 | 53 | 71 | 35 | 10 | 46 | 72 | 7 | 165 | 79 | 59 | 50 | 29 | 51 | 9 |
Wind waves Height (m) Direction Period (s) | — | N 7 | ENE 7 | — | ENE 7 | ENE 7 | ENE 7 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 7 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 |
| kJ | — | 24 | 93 | — | 144 | 210 | 180 | 302 | 115 | 111 | 107 | 97 | 153 | 186 | 144 | 154 | 91 | 258 | 88 | 118 | 258 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 14 | 54 | 68 | 69 | 68 | 71 | 68 | 68 | 68 | 68 | 68 | 68 | 69 | 90 | 68 | 68 | 68 | 68 | 68 | 68 | 68 |
Best forecast wave conditions in Molokai | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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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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