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Surf Forecasts:
Tunnels surfForecast / HAW – Kaua'i / USA
48hr Weather and Surf, issued 1 am Tuesday 21 Apr 2026 HSTForecast update in hr min s Forecast update imminent
Tunnels surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Tunnels sea temperature is
24.7° C
(Which is normal for this time of year)How big are the waves at Tunnels today?
The current surf forecast for Tunnels at 9AM is: 0.7m 16s primary swell from a West direction and 0.8m 8s secondary swell from a North-northeast direction (forecast issued at 01:00am April 21). The wind direction is predicted to be glassy and the swell rating is 2.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Apr) | 2.5ft (0.7m) | 16s |
| Afternoon (21 Apr) | 2.5ft (0.7m) | 15s |
| Evening (21 Apr) | 2.5ft (0.7m) | 15s |
Table - waves today at Tunnels. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 21 | Wednesday 22 | Thursday 23 | ||||||||||||||||||||||
| 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |  |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 14 | 15 | 16 | 16 | 16 | 16 | 15 | 15 | 15 | 14 | 14 | 13 | 13 | 13 | 12 | 13 | 12 | 12 | 11 | 11 | 11 | 11 | 15 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 89 | 115 | 124 | 240 | 240 | 236 | 283 | 205 | 275 | 529 | 337 | 525 | 509 | 512 | 466 | 370 | 353 | 330 | 256 | 317 | 222 | 214 | 277 | 261 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | cross- off | glass | glass | on | glass | on | glass | cross | cross | cross- off | cross- off | cross | cross | cross | cross | cross | cross- off | cross | cross | cross | cross | cross | cross |
High Tide / height (m) | 4:28AM 0.12 | 6:56PM 0.63 | 6:02AM 0.09 | 8:06PM 0.59 | 8:24AM 0.10 | |||||||||||||||||||
Low Tide / height (m) | 1:54AM 0.09 | 10:07AM -0.07 | 3:38AM 0.07 | 11:03AM -0.02 | 4:23AM 0.05 | 12:30PM 0.03 | ||||||||||||||||||
Tuesday 21 | Wednesday 22 | Thursday 23 | ||||||||||||||||||||||
| Sunrise | - | - | - | 6:13 | - | - | - | - | - | - | - | 6:11 | - | - | - | - | - | - | - | 6:11 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 7:00 | - | - | - | - | - | - | - | 7:00 | - | - | - | - | - | - | - | 7:00 | - |
 |  | |  | |  | | | | | |  | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 24 | 23 | 23 | 24 | 25 | 24 | 25 | 24 | 24 | 23 | 23 | 23 | 25 | 24 | 24 | 23 | 23 | 22 | 22 | 22 | 22 | 23 | 23 | 22 |
| Feels °C (?) | 27 | 26 | 26 | 28 | 28 | 27 | 28 | 27 | 27 | 26 | 26 | 25 | 27 | 26 | 26 | 24 | 25 | 24 | 23 | 22 | 22 | 22 | 22 | 22 |
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Live Wave Height (m)
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Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Tunnels surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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