Surf Forecasts:
Cannons surf forecast from 31 Jul 2026:
- Most powerful swell: Sunday 2 Aug, 5AM (local time) - 8ft (2.4m), 9s period, ENE swell with 839 kJ wave energy.
Best Forecast Surf Conditions for Cannons this week:
The most powerful waves expected at Cannons in the next 16 days are 2.4m 9s and forecast to arrive on Sunday (Aug 02) at 5AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.2m 8s period and expected on Saturday (Aug 01) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5AM (Sun 2nd Aug) | 8ft (2.4m) 9s |
Table - best surf conditions forecast for Cannons over the next 16 days.
The Lowdown
Alright folks, let’s have a look at what’s on offer. I’m Rusty, and I’ve been staring at the charts for Cannons. Gotta be straight with you – the next 16 days look pretty grim for a proper paddle. There’s a massive gap of flat, junk conditions right through the start.
We kick off on Friday the 31st of July, but it’s not worth a second look. Tiny 1 ft of short-period, cross-onshore slop. The combined energy is a weak 22, and it’s just a mess. That poor run doesn’t let up. We’re looking at a solid 4-day gap of nothing but lousy, onshore wind and tiny waves. Saturday the 1st of August is almost flat, and Sunday the 2nd sees a jump in height to 7 ft, but the wind is still cross-on and the energy is moderate at 717 – it’s just a choppy, blown-out mess. That onshore flow sticks around right through the end of the first week.
The only flicker of hope comes on Tuesday the 4th of August. The swell drops to 5 ft, but the period stretches to a very long 12 seconds. That’s a proper groundswell, with moderate energy (620). The wind is still onshore though, so it’s only a marginal call. You’d be fighting chop.
Things finally, *finally* turn around on Friday the 14th of August. The wind drops right out. By Friday afternoon, we’ve got a glassy surface and a 3 ft groundswell rolling in from the west at a very long 16 seconds. The energy is moderate (374). That’s the first decent window. And then Saturday the 15th of August? That’s your standout. Clean, glassy conditions, with a 3 ft west swell holding at a long 14 seconds. The combined energy is 320. It’s not big, but it’ll be clean, lined up, and perfect for a longboard or a funshape. For a reef break like Cannons, that long-period west swell is the ticket. Just know that this spot sees crowds often, so expect company.
The long-range promise is there, but it’s a long wait. The forecast is more reliable for the Saturday, so keep your fingers crossed.
Rusty, signing off.
Short Range ForecastLight rain (total 4mm), mostly falling on Sat night. Warm (max 27°C on Fri morning, min 24°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummarySome drizzle, heaviest during Wed afternoon. Warm (max 27°C on Wed afternoon, min 24°C on Sun night). Wind will be generally light. | ||||||||||||||||||
Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | ||||||||||||||
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) | N 7 | NNE 8 | N 8 | N 8 | N 11 | N 11 | ENE 8 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 12 | ENE 11 | ENE 11 | ENE 10 | ENE 9 | ENE 9 |
Wave Graph  | |||||||||||||||||||
 kJ | 34 | 22 | 20 | 10 | 2 | 9 | 737 | 692 | 632 | 498 | 338 | 299 | 256 | 589 | 503 | 476 | 348 | 222 | 180 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross | cross |
High Tide | 3:35AM0.31m | 4:12PM0.66m | 4:22AM0.34m | 4:36PM0.62m | 5:16AM0.38m | 4:58PM0.55m | 6:18AM0.43m | 5:19PM0.48m | 7:32AM0.48m | 5:36PM0.41m | 8:55AM0.55m | ||||||||
Low Tide | 10:10PM0.11m | 8:36AM0.03m | 10:31PM0.10m | 9:16AM0.08m | 10:54PM0.09m | 10:03AM0.14m | 11:20PM0.07m | 11:03AM0.21m | 11:50PM0.05m | 12:38PM0.27m | 00:29AM0.04m | 1:19AM0.03m | |||||||
 |  |  |  | | |  |  | | | | |  | | | | |  |  | |
 | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — |
 | 7:19 | — | 7:19 | — | — | 7:17 | — | — | 7:17 | — | — | 7:16 | — | — | 7:16 | — | — | 7:15 | — |
mm | — | — | — | — | — | — | 2 | 1 | 1 | — | — | — | — | — | — | — | — | 1 | 1 |
Temp °C | 26 | 27 | 27 | 25 | 26 | 26 | 24 | 26 | 26 | 25 | 26 | 26 | 24 | 26 | 25 | 25 | 26 | 27 | 25 |
Feels °C | 28 | 28 | 27 | 25 | 25 | 25 | 23 | 25 | 25 | 25 | 26 | 26 | 25 | 27 | 25 | 27 | 27 | 28 | 27 |
Swell 1 Height (m) Direction Period (s) | N 7 | E 16 | E 15 | E 15 | E 15 | E 15 | E 14 | E 14 | E 14 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 12 | ENE 11 | ENE 11 | ENE 10 | ENE 9 | ENE 9 |
| kJ | 34 | 178 | 161 | 219 | 205 | 205 | 199 | 191 | 188 | 498 | 338 | 299 | 256 | 589 | 503 | 476 | 348 | 222 | 180 |
Swell 2 Height (m) Direction Period (s) | E 17 | NNE 8 | N 8 | N 8 | SSW 14 | SSW 14 | N 10 | N 9 | N 8 | E 13 | E 13 | ENE 12 | E 12 | W 13 | W 12 | W 12 | W 13 | W 13 | W 12 |
| kJ | 87 | 22 | 20 | 10 | 19 | 18 | 16 | 14 | 13 | 123 | 117 | 51 | 110 | 31 | 28 | 26 | 28 | 28 | 27 |
Swell 3 Height (m) Direction Period (s) | SSW 16 | SSW 16 | SW 15 | SW 15 | N 11 | N 11 | SSW 14 | W 12 | W 12 | W 11 | N 7 | W 12 | W 14 | SW 12 | NNE 10 | NNE 9 | NNE 9 | NNE 8 | SSE 7 |
| kJ | 26 | 25 | 36 | 34 | 2 | 9 | 18 | 11 | 11 | 9 | 4 | 11 | 16 | 6 | 10 | 8 | 8 | 7 | 5 |
Wind waves Height (m) Direction Period (s) | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | ENE 8 | ENE 9 | ENE 9 | — | — | — | — | — | — | — | — | — | — |
| kJ | 193 | 249 | 302 | 441 | 608 | 692 | 737 | 692 | 632 | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 31 | 31 | 333 | 31 | 31 | 335 | 31 | 31 | 362 | 31 | 7 | 31 | 1 | 7 | 31 | 1 | 31 | 1 | 1 |
Best forecast wave conditions in Kaua'i | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Latest Updates
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 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
Nearest