Surf Forecasts:
Cannons surf forecast from 14 Sep 2026:
- Most powerful swell: Friday 18 Sep, 5AM (local time) - 6ft (1.8m), 9s period, ENE swell with 513 kJ wave energy.
Best Forecast Surf Conditions for Cannons this week:
The most powerful waves expected at Cannons in the next 16 days are 1.8m 9s and forecast to arrive on Friday (Sep 18) at 5AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.8m 8s period and expected on Sunday (Sep 20) at 5AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5AM (Fri 18th Sep) | 6ft (1.8m) 9s |
Table - best surf conditions forecast for Cannons over the next 16 days.
The Lowdown
Alright, Rusty here again with the imperial version.
First off, it’s gonna be a long dry spell. Starting from September 14th right through to the morning of September 27th, it’s basically all poor surf conditions at Cannons. Tiny swell, messy cross-on breezes, and no real reason to get wet. That’s a solid 13-day stretch with nothing worth mentioning.
Finally, on Sunday the 27th of September, we get a pulse. Morning sees a 6ft swell from the north with a period of 10 seconds. The combined energy jumps to 771 – that’s moderate and the best we’ve seen by far. Winds are light offshore from the NNE, so it should be clean. This is a reef break, fairly consistent, so it should handle that north swell. It’s a marginal call, but it’s the standout of the whole outlook. Crowds are “often,” so don’t expect solitude. Water temp is 80°F, right about normal for this time of year. Sunday afternoon stays in the game with 5ft from the north, still offshore, energy down a bit to 637.
Monday the 28th brings a 2ft groundswell from the northwest with a very long period of 15–16 seconds. That kind of period means better shaped waves and longer lulls, and at a reef break that can be a real treat. Winds are light cross-on or offshore. Still a marginal call though.
After that, it fades off into small and messy again. The window is tight – make the most of that Sunday the 27th if you can.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Tue afternoon. Warm (max 27°C on Wed morning, min 24°C on Mon morning). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 17mm), heaviest on Thu afternoon. Warm (max 27°C on Fri morning, min 25°C on Thu morning). Wind will be generally light. | ||||||||||||||||||||
Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | |||||||||||||||
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) | NE 8 | NE 8 | NE 8 | ENE 6 | ENE 6 | ENE 6 | NE 7 | NE 6 | NNE 8 | NE 7 | ENE 7 | NNE 7 | ENE 9 | NNE 7 | NNE 7 | NNE 6 | NNE 6 | NNE 6 | NNE 7 | W 12 | W 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 118 | 82 | 69 | 51 | 53 | 43 | 62 | 94 | 100 | 126 | 327 | 113 | 466 | 50 | 51 | 32 | 22 | 13 | 15 | 12 | 11 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross | cross | cross |
High Tide | 3:55PM0.38m | 5:40AM0.60m | 3:55PM0.33m | 6:36AM0.58m | 7:48AM0.55m | 9:16AM0.55m | 10:32AM0.56m | 10:47PM0.21m | 11:26AM0.59m | 11:39PM0.25m | |||||||||||
Low Tide | 10:38AM0.21m | 9:44PM0.05m | 11:55AM0.25m | 10:07PM0.06m | 10:34PM0.09m | 11:12PM0.11m | 00:39AM0.13m | 6:50PM0.16m | 2:52AM0.13m | 6:45PM0.15m | 4:08AM0.12m | ||||||||||
 | |  | |  | | | |  |  | |  | | | | | |  | |  | | |
 | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:26 | — | — | 6:26 | — | — |
 | — | 6:42 | — | — | 6:40 | — | — | 6:39 | — | — | 6:38 | — | — | 6:37 | — | — | 6:37 | — | — | 6:36 | — |
mm | — | — | — | — | 1 | — | — | — | 3 | 2 | 3 | 7 | 2 | 2 | — | — | 1 | — | 1 | — | — |
Temp °C | 26 | 26 | 25 | 26 | 26 | 25 | 27 | 27 | 25 | 26 | 26 | 25 | 27 | 27 | 25 | 27 | 27 | 25 | 26 | 27 | 25 |
Feels °C | 27 | 25 | 26 | 27 | 27 | 27 | 28 | 28 | 27 | 27 | 27 | 26 | 28 | 27 | 26 | 28 | 27 | 26 | 27 | 28 | 26 |
Swell 1 Height (m) Direction Period (s) | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | ENE 6 | NE 7 | E 10 | NNE 8 | E 10 | SW 16 | NNE 7 | SW 17 | NNE 7 | NNE 7 | NNE 6 | NNE 6 | E 8 | NNE 7 | SSW 15 | E 8 |
| kJ | 118 | 82 | 69 | 51 | 48 | 43 | 62 | 50 | 100 | 237 | 40 | 113 | 76 | 50 | 51 | 32 | 22 | 266 | 15 | 42 | 280 |
Swell 2 Height (m) Direction Period (s) | WNW 11 | WNW 11 | E 14 | E 13 | E 12 | NNE 8 | E 11 | SW 18 | E 10 | SW 16 | SW 19 | SW 18 | WNW 10 | SW 17 | SW 16 | SW 16 | SW 16 | NNE 6 | SSW 15 | W 12 | SSW 14 |
| kJ | 12 | 12 | 16 | 30 | 26 | 39 | 37 | 79 | 75 | 40 | 15 | 80 | 9 | 72 | 66 | 63 | 63 | 13 | 42 | 12 | 21 |
Swell 3 Height (m) Direction Period (s) | SE 8 | SSW 22 | SSW 21 | SW 20 | SSW 19 | E 11 | SW 18 | WNW 10 | SW 17 | WNW 9 | NW 9 | WNW 11 | W 9 | NW 9 | NW 9 | NW 8 | SSE 7 | SSW 16 | W 13 | NW 8 | W 12 |
| kJ | 3 | 46 | 45 | 60 | 37 | 39 | 79 | 9 | 75 | 8 | 3 | 12 | 2 | 3 | 3 | 3 | 5 | 47 | 13 | 3 | 11 |
Wind waves Height (m) Direction Period (s) | E 4 | E 5 | E 5 | ENE 6 | ENE 6 | — | E 6 | NE 6 | E 6 | NE 7 | ENE 7 | E 9 | ENE 9 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | — |
| kJ | 10 | 11 | 11 | 43 | 53 | — | 24 | 94 | 52 | 126 | 327 | 359 | 466 | 298 | 260 | 289 | 297 | 381 | 291 | 287 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 7 | 7 | 1 | 24 | 24 | 1 | 24 | 32 | 7 | 31 | 31 | 31 | 31 | 151 | 7 | 31 | 31 | 31 | 31 | 31 | 31 |
Best forecast wave conditions in Kaua'i | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Cannons 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.
Information about the Cannons Surf forecast
The above surf forecast table for Cannons provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Cannons can be found by selecting the local surf guide option on the grey menu. Our Cannons 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 (Cannons) 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 Cannons 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 Cannons, 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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