
Surf Forecasts:
Kalapaki Beach surf forecast from 3 Aug 2026:
- Most powerful swell: Tuesday 4 Aug, 11AM (local time) - 5ft (1.6m), 12s period, ENE swell with 660 kJ wave energy.
Best Forecast Surf Conditions for Kalapaki Beach this week:
The most powerful waves expected at Kalapaki Beach in the next 16 days are 1.6m 12s and forecast to arrive on Tuesday (Aug 04) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 12s period and expected on Sunday (Aug 09) at 2PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11AM (Tue 4th Aug) | 5ft (1.6m) 12s |
Table - best surf conditions forecast for Kalapaki Beach over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s look at what’s on offer for Kalapaki Beach over the next couple of weeks.
Honestly, it’s a pretty grim stretch for paddle surfing. The whole 16-day window is a write-off for decent waves. The first real chance at anything rideable doesn’t show up until Monday the 4th of August, and even then it’s a struggle to call it surf. The pattern is dominated by a persistent ENE wind, which is keeping the surface lumpy and choppy pretty much the whole time.
We start off with some waist-high swell on Monday the 3rd of August, around 6ft from the ENE, but it’s short period, only 8 seconds, and there’s a moderate cross-shore wind mucking it up. The water is a warm 80°, which is bang on average for the time of year, so no surprises there. The combined energy is moderate (572), but it’s a messy package.
Tuesday the 4th of August morning sees a jump in period to 12 seconds, which is a bit more promising for shape, but the wind is cross-onshore, making it choppy. The swell drops to 5ft, and the energy is still moderate (752). Tuesday afternoon is a little cleaner with a cross-shore breeze, but the swell is only 5ft and the period is 11 seconds. It’s still just a marginal call.
The rest of the first week and into the second week is a case of "not much changing." The wind stays up, the swell direction is mostly ENE, and the periods are short, often around 7 seconds, which is just windswell junk. The energy values are all moderate, ranging from the 300s to the 600s, but it’s all poor surf conditions. On Thursday the 7th of August, the swell drops to a tiny 1ft, and the only significant period is a 20-second south swell that is simply too small to do anything with.
There is a notable spike in energy around the 12th and 13th of August, with combined energy climbing into the four-digit range (1135, 1247, 1143, 1055) from the south. That’s a strong pulse of long-period groundswell (16 to 18 seconds). But the swell height is only 3ft to 4ft, and the wind is cross-onshore or choppy, so it’s all just raw energy with no clean shape. A reef break like Kalapaki would normally groove on a long south swell, but with that wind, it’s a no-go.
By the 16th of August, the swell bumps back up to 6ft from the ENE, but the period is a miserable 8 seconds, and the wind is a fresh 19 mph, creating a lumpy cross-chop. The energy is strong (821), but it’s a mess. The following days on the 17th and 18th of August, the swell holds around 7ft, but it’s still short-period windswell with that persistent stiff cross-shore wind. The combined energy is strong (784, 823, and 737), but it’s just not surfable.
There is no standout session here. Nothing. The best of a bad bunch is probably the Tuesday afternoon (4th of August) or Wednesday morning (5th of August) when the wind is a little lighter, but it’s still only marginal. Honestly, if you’re a kite surfer, this constant 12 to 19 mph cross-shore wind might be interesting, but for a paddle surfer, leave the board at home.
Rusty.
Short Range ForecastLight rain (total 7mm), mostly falling on Mon night. Warm (max 26°C on Mon afternoon, min 24°C on Mon morning). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Thu afternoon. Warm (max 26°C on Thu morning, min 24°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | |||||||||||||||
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) | ENE 8 | ENE 8 | ENE 8 | ENE 12 | ENE 11 | ENE 11 | ENE 10 | ENE 10 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | SW 21 | SW 20 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
Wave Graph | |||||||||||||||||||||
402 | 323 | 313 | 660 | 515 | 561 | 407 | 312 | 92 | 190 | 181 | 159 | 125 | 98 | 146 | 212 | 276 | 321 | 305 | 314 | 337 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross | cross | cross | cross | cross | cross-on | cross | cross | cross | cross | cross | cross |
High Tide | 6:14PM0.44m | 8:45AM0.44m | 6:28PM0.37m | 10:10AM0.50m | 11:24AM0.57m | 12:26PM0.64m | 1:18PM0.69m | 00:17AM0.19m | 2:05PM0.73m | 1:24AM0.22m | |||||||||||
Low Tide | 12:35PM0.23m | 1:21AM0.04m | 2:08PM0.29m | 1:58AM0.03m | 2:46AM0.02m | 3:47AM0.01m | 4:56AM-0.01m | 9:20PM0.16m | 6:02AM-0.03m | 9:35PM0.15m | |||||||||||
6:09 | — | — | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | |
— | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:14 | — | — | 7:13 | — | — | 7:13 | — | — | 7:12 | — | |
mm | — | — | 1 | — | 1 | 3 | 2 | — | — | — | 1 | — | — | — | 1 | — | — | 1 | 1 | 4 | 7 |
Temp °C | 25 | 26 | 25 | 26 | 26 | 25 | 25 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 |
Feels °C | 25 | 26 | 25 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 26 | 27 | 26 | 26 | 26 | 26 | 25 | 24 | 26 | 27 | 26 |
Swell 1 Height (m) Direction Period (s) | E 13 | E 13 | E 12 | S 12 | SSW 12 | SSW 11 | SSW 11 | SSW 15 | ENE 9 | SSW 14 | SSW 14 | SSW 14 | SE 8 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | S 18 | SSW 16 |
86 | 84 | 104 | 72 | 75 | 68 | 46 | 87 | 92 | 81 | 80 | 81 | 30 | 74 | 110 | 113 | 102 | 99 | 98 | 156 | 263 | |
Swell 2 Height (m) Direction Period (s) | SE 10 | SSW 12 | SSW 12 | SE 9 | SW 16 | SSW 15 | SSE 13 | SSW 11 | SSW 15 | SSE 11 | SSE 11 | S 11 | SSW 14 | SE 7 | SE 8 | SE 8 | SE 8 | SW 17 | SSW 16 | SSW 12 | SSW 12 |
27 | 50 | 48 | 20 | 69 | 89 | 55 | 38 | 87 | 43 | 42 | 38 | 78 | 27 | 22 | 33 | 33 | 148 | 104 | 83 | 56 | |
Swell 3 Height (m) Direction Period (s) | SSW 13 | SE 7 | SE 9 | W 13 | SSE 14 | SSE 13 | SW 15 | SSE 12 | S 12 | SSW 10 | NNW 8 | SE 7 | SW 21 | SW 20 | SSW 19 | SSW 18 | SSW 18 | SSE 9 | W 12 | SSE 9 | SSE 9 |
57 | 13 | 41 | 31 | 40 | 58 | 60 | 49 | 46 | 19 | 11 | 14 | 115 | 98 | 146 | 127 | 124 | 29 | 45 | 34 | 32 | |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | ENE 12 | ENE 11 | ENE 11 | ENE 10 | ENE 10 | ENE 5 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 5 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
402 | 323 | 313 | 660 | 515 | 561 | 407 | 312 | 42 | 190 | 181 | 159 | 125 | 66 | 140 | 212 | 276 | 321 | 305 | 314 | 337 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 31 | 31 | 17 | 31 | 31 | 17 | 31 | 31 | 16 | 31 | 31 | 17 | 17 | 31 | 17 | 17 | 33 | 17 | 17 | 33 | 17 |
Best forecast wave conditions in Kaua'i | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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Information about the Kalapaki Beach Surf forecast
The above surf forecast table for Kalapaki Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Kalapaki Beach can be found by selecting the local surf guide option on the grey menu. Our Kalapaki Beach 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 (Kalapaki Beach) 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 Kalapaki Beach 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 Kalapaki Beach, camping, hotels and condos and appartments in Kaua'i, consider staying in Nawiliwili which is 1 km (1 miles) away. Alternatively, find information about places to stay and car hire in Lihue - Kauai which is 3 km (2 miles) away











