
Surf Forecasts:
Kalapaki Beach surf forecast from 11 Sep 2026:
- Most powerful swell: Thursday 17 Sep, 8PM (local time) - 7ft (2.2m), 8s period, ENE swell with 622 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 1.0m 17s and forecast to arrive on Thursday (Sep 17) at 8PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 9s period and expected on Sunday (Sep 13) at 8PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8PM (Thu 17th Sep) | 7ft (2.2m) 8s |
Table - best surf conditions forecast for Kalapaki Beach over the next 16 days.
The Lowdown
Right then, let’s talk about Kalapaki Beach. It’s been a tough stretch for surf here, and honestly, the next sixteen days don’t look like they’re going to offer much of a wave for a paddle surfer.
Right from the get-go, Thursday the 10th kicks things off with a messy, cross-onshore ENE breeze at 16 mph, bumping up a 5 ft swell with a short period of only 7 seconds. The water’s sitting at 80°, which is pretty much bang on average for the time of year. The combined energy is moderate at 710, but the wind just kills it. You’re looking at a choppy, lumpy sea state with nothing clean on offer for the rest of this week.
We then slide into a real quiet spell. Through the weekend and into the middle of the following week, the swell drops off a cliff – we’re talking tiny 1 ft to 2 ft waves, mostly from the SW, with long periods (15-22 seconds) that just don’t have enough push on a beach setup like this. The wind stays cross or cross-on, and every single forecast call is for poor or marginal conditions. By Monday the 14th, the combined swell energy drops below 100 to just 90 – that’s weak, flat water stuff.
There’s a bit of a pulse around Wednesday the 16th, with a 3 ft SSW swell, but it’s paired with a risk of thunderstorms and a 16 mph crosswind from the NE. The energy picks up to 853 (moderate), but it’s still just not clean. Nothing worth paddling for.
Then Thursday the 17th brings a bigger 7 ft ENE swell at 8 seconds, with 16 mph crosswinds again. This one has some grunt, with combined energy hitting 1086 (strong). But honestly, that short period and the messy wind make it a blown-out, bumpy mess. It’s only for the most determined, and even then, it’s not good.
The last real chance to keep an eye on comes on Wednesday the 23rd and Thursday the 24th. We see a 5 ft E/ENE swell with a period of 12 seconds, and light 6 mph winds. The wind shifts onshore, but it’s light enough that the wave quality might just sneak into something rideable. The combined energy is strong at 1176 on the 23rd. This is as close to a standout as we get in this whole outlook, but it’s still only marginal, and it’s over a week and a half away, so you’d be gambling on the forecasts holding. Given the consistent cross-onshore pattern, I’d say the setup looks more interesting for kite surfing than paddle surfing for most of this window.
Honestly, if you’ve got the time to wait, the 23rd and 24th are the only dates that might produce a half-decent wave, but don’t hold your breath. It’s a long, flat, windy run for Kalapaki.
Rusty.
Short Range ForecastSome drizzle, heaviest during Thu afternoon. Warm (max 27°C on Thu afternoon, min 23°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 7mm), mostly falling on Sun night. Warm (max 27°C on Tue afternoon, min 24°C on Sun night). Wind will be generally light. | |||||||||||||||||||
Thu 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | ||||||||||||||
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 7 | ENE 7 | SW 16 | ENE 8 | ENE 11 | ENE 10 | ENE 10 | SSW 13 | SW 15 | SSW 15 | SW 14 | SW 14 | SW 22 | SW 21 | SW 20 | SW 19 | SSW 19 | SW 18 | SSW 18 | SSW 17 |
Wave Graph | ||||||||||||||||||||
280 | 225 | 198 | 226 | 404 | 209 | 169 | 98 | 104 | 84 | 99 | 49 | 227 | 224 | 392 | 384 | 465 | 449 | 541 | 355 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-on | cross | cross | cross-on | cross-on | cross | cross-on | cross | cross | cross | cross | cross | cross-on | cross | cross | cross | cross | cross |
High Tide | 3:24PM0.61m | 3:47AM0.47m | 3:51PM0.55m | 4:29AM0.51m | 4:16PM0.48m | 5:11AM0.54m | 4:38PM0.41m | 5:56AM0.55m | 4:55PM0.35m | 6:45AM0.55m | 4:58PM0.30m | 7:44AM0.54m | ||||||||
Low Tide | 9:45PM0.07m | 9:31AM0.09m | 10:06PM0.05m | 10:19AM0.13m | 10:28PM0.04m | 11:10AM0.18m | 10:50PM0.04m | 12:08PM0.22m | 11:14PM0.05m | 1:23PM0.26m | 11:40PM0.08m | 00:11AM0.10m | ||||||||
— | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:24 | — | — | 6:24 | — | — | |
6:45 | — | — | 6:44 | — | — | 6:43 | — | — | 6:42 | — | — | 6:40 | — | — | 6:39 | — | — | 6:38 | — | |
mm | 1 | — | — | — | — | — | — | — | — | — | 3 | — | — | — | — | — | 2 | 2 | 1 | 3 |
Temp °C | 27 | 25 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 26 | 25 | 25 | 26 | 25 | 26 | 27 | 26 | 26 | 27 | 26 |
Feels °C | 28 | 25 | 26 | 26 | 25 | 26 | 25 | 25 | 25 | 26 | 26 | 24 | 25 | 26 | 27 | 28 | 27 | 27 | 28 | 27 |
Swell 1 Height (m) Direction Period (s) | SSW 12 | SW 16 | SW 16 | SSW 15 | SW 15 | NE 9 | NE 9 | NE 9 | NE 9 | NE 9 | NE 9 | NE 8 | SW 22 | SW 21 | NE 8 | NE 7 | SSW 19 | SW 18 | SSW 18 | SSW 17 |
172 | 211 | 198 | 150 | 226 | 75 | 84 | 115 | 115 | 115 | 93 | 120 | 227 | 224 | 125 | 105 | 465 | 449 | 541 | 355 | |
Swell 2 Height (m) Direction Period (s) | E 12 | E 12 | E 11 | SE 9 | SE 8 | SW 16 | SSW 16 | ENE 9 | SW 15 | SSW 15 | SW 14 | SW 14 | SW 14 | SW 13 | SW 20 | SW 19 | SSE 7 | E 11 | SW 11 | SSW 21 |
104 | 99 | 91 | 37 | 18 | 124 | 99 | 49 | 104 | 84 | 99 | 49 | 47 | 44 | 392 | 384 | 10 | 35 | 31 | 86 | |
Swell 3 Height (m) Direction Period (s) | SW 18 | SSW 12 | S 12 | SSW 12 | SE 6 | SSW 13 | SSW 13 | SSW 13 | SW 12 | SE 9 | ENE 9 | SE 8 | SE 8 | SE 8 | SW 12 | SSE 8 | E 11 | SW 11 | W 10 | SW 11 |
154 | 81 | 71 | 45 | 8 | 70 | 69 | 98 | 23 | 13 | 15 | 17 | 16 | 15 | 39 | 19 | 39 | 20 | 7 | 19 | |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 11 | ENE 10 | ENE 10 | E 4 | ENE 9 | ENE 9 | ENE 5 | ENE 5 | NE 8 | NE 8 | — | — | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
280 | 225 | 162 | 226 | 404 | 209 | 169 | 19 | 64 | 62 | 56 | 24 | 153 | 142 | — | — | 142 | 198 | 281 | 355 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 31 | 17 | 31 | 31 | 17 | 31 | 13 | 17 | 31 | 31 | 17 | 31 | 31 | 17 | 31 | 31 | 17 | 31 | 17 | 31 |
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










