
Surf Forecasts:
Kalapaki Beach surf forecast from 21 Jul 2026:
- Most powerful swell: Tuesday 28 Jul, 2AM (local time) - 5ft (1.6m), 14s period, E swell with 1,030 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 14s and forecast to arrive on Tuesday (Jul 28) at 2AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 8s period and expected on Monday (Jul 27) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2AM (Tue 28th Jul) | 5ft (1.6m) 14s |
Table - best surf conditions forecast for Kalapaki Beach over the next 16 days.
The Lowdown
Hey folks, Rusty here. Let’s talk Kalapaki Beach for the next 16 days. Plain and simple, it’s a rough stretch. The water’s at 80°, which is about normal for this time of year, so no surprises there.
Starting Tuesday the 21st, we’ve got a little S swell around 3 to 3 ft, with a 14-15 second period – that’s a nice long groundswell. The combined energy is moderate (601-627). Problem is, the wind’s cross from the ENE at 12-15 mph, so you’ve got a cross-chop. It’s marginal surf with questionable tide. Wednesday and Thursday the 22nd and 23rd bring a SSW swell with a really long period (23-24 seconds) and strong energy (1017-1108), but the wind stays cross or cross-on, so it’s still choppy and poor.
Friday the 24th, the swell jumps to nearly 7 ft from the ENE, but it’s a short 7-second windswell. The wind is cross-on and choppy, and that size is expert-only territory. The combined energy is strong (1063-1197), but the quality is poor. Saturday and Sunday the 25th and 26th, we get some SSE and E swells with long periods (16-18 seconds) and strong energy (1336-1376), but the wind is cross, so it’s lumpy. Still marginal at best.
From Monday the 27th to Friday the 31st, there’s a consistent E to ENE swell running 5 to 6 ft, with periods dropping from 15 seconds down to 9 seconds. Energy stays moderate to strong (581-1450). The wind is cross from the NE or ENE at 9-15 mph. It’s the same story – marginal surf with cross-chop. Wednesday the 29th might be your best bet with a 6 ft swell and 13-second period, but it’s still not clean.
Into August, Saturday the 1st and Sunday the 2nd, we see 8-8 ft from the ENE with short 7-8 second periods and cross to cross-on winds. That’s a lot of water moving with bad shape – honestly, better for kite surfing than a paddle session. Monday the 3rd through Wednesday the 5th, the swell drops to 5-7 ft, periods stay short (8-9 seconds), and the wind is cross-onshore. By Wednesday the 5th, it’s a tiny 2 ft SSW with a 16-second period, but it’s cross-on and choppy. A total dud.
So what’s the one to aim for? Not much to get stoked about, but Tuesday afternoon the 21st has a 3 ft S swell with a 14-second period and moderate energy of 627. The wind is cross at 12 mph, so it’s not glassy, but it’s the best of a bad lot. Keep your expectations low.
There’s a long gap of poor to marginal conditions from the 22nd right through to the 5th of August. That’s about two weeks of tough going. Kalapaki is usually pretty consistent, so this flat spell is a bummer, but things can change. Stay tuned.
Rusty, out.
Short Range ForecastModerate rain (total 16mm), heaviest on Wed morning. Warm (max 25°C on Tue morning, min 23°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 8mm), mostly falling on Fri morning. Warm (max 26°C on Sun afternoon, min 24°C on Fri morning). Wind will be generally light. | ||||||||||||||||||||
Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 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) | S 15 | S 14 | S 13 | SSW 24 | SSW 23 | SSW 22 | SSW 20 | SSW 20 | SSW 18 | ENE 7 | SSW 17 | ENE 8 | ENE 8 | SSW 18 | SSW 18 | SSW 16 | E 16 | E 16 | E 15 | E 14 | E 14 |
Wave Graph | |||||||||||||||||||||
275 | 320 | 352 | 437 | 564 | 480 | 528 | 399 | 469 | 431 | 390 | 452 | 519 | 731 | 662 | 575 | 489 | 817 | 853 | 808 | 1030 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross |
High Tide | 11:06AM0.46m | 12:06PM0.52m | 12:55PM0.57m | 1:36PM0.61m | 00:21AM0.18m | 2:14PM0.63m | 1:16AM0.20m | 2:48PM0.65m | 1:57AM0.21m | 3:20PM0.66m | 2:33AM0.23m | ||||||||||
Low Tide | 3:30AM0.04m | 4:16AM0.04m | 5:07AM0.04m | 10:06PM0.17m | 6:00AM0.03m | 10:10PM0.16m | 6:48AM0.01m | 10:20PM0.16m | 7:31AM-0.01m | 10:33PM0.16m | |||||||||||
6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:07 | — | — | 6:07 | — | — | |
— | 7:22 | — | — | 7:21 | — | — | 7:21 | — | — | 7:21 | — | — | 7:20 | — | — | 7:20 | — | — | 7:19 | — | |
mm | 1 | 2 | 4 | 5 | 3 | — | 1 | — | — | 1 | 1 | 1 | 2 | 2 | — | — | — | 1 | — | — | — |
Temp °C | 25 | 25 | 24 | 25 | 25 | 24 | 25 | 25 | 24 | 25 | 25 | 24 | 24 | 25 | 24 | 25 | 26 | 24 | 25 | 25 | 24 |
Feels °C | 24 | 24 | 24 | 26 | 24 | 23 | 24 | 23 | 23 | 24 | 24 | 23 | 24 | 25 | 23 | 24 | 25 | 23 | 24 | 25 | 23 |
Swell 1 Height (m) Direction Period (s) | S 15 | S 14 | S 13 | S 14 | SSW 23 | S 13 | SSW 20 | S 13 | SSW 18 | SSW 18 | SSW 17 | SSW 16 | SSW 19 | SSW 18 | SSW 18 | SSW 16 | E 16 | E 16 | E 15 | E 14 | E 14 |
275 | 320 | 352 | 315 | 564 | 212 | 528 | 219 | 469 | 356 | 340 | 302 | 502 | 731 | 662 | 575 | 489 | 817 | 853 | 808 | 1030 | |
Swell 2 Height (m) Direction Period (s) | SSW 11 | SW 16 | SSW 26 | SSW 24 | S 13 | SSW 22 | S 13 | SSW 20 | S 13 | S 12 | S 12 | S 20 | SSW 16 | S 11 | S 11 | E 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 |
50 | 65 | 224 | 437 | 173 | 480 | 209 | 399 | 85 | 190 | 141 | 408 | 223 | 93 | 58 | 231 | 427 | 416 | 292 | 284 | 213 | |
Swell 3 Height (m) Direction Period (s) | SW 17 | E 15 | SW 15 | E 12 | S 10 | E 12 | E 12 | E 12 | S 11 | S 22 | S 21 | S 12 | S 11 | E 14 | E 13 | S 11 | SSW 10 | SSW 9 | SW 8 | SW 8 | SSE 10 |
72 | 38 | 60 | 73 | 76 | 103 | 103 | 98 | 56 | 86 | 326 | 97 | 92 | 33 | 54 | 61 | 78 | 32 | 18 | 11 | 19 | |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 6 | ENE 7 | E 7 | E 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | NE 7 |
204 | 204 | 163 | 192 | 278 | 194 | 268 | 270 | 420 | 431 | 390 | 452 | 519 | 488 | 531 | 496 | 382 | 306 | 287 | 213 | 126 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 17 | 17 | 17 | 31 | 33 | 17 | 33 | 31 | 17 | 33 | 31 | 17 | 17 | 33 | 17 | 17 | 31 | 31 | 17 | 17 | 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










