Surf Forecasts:
Kalapaki Beach surf forecast from 27 Aug 2026:
- Most powerful swell: Thursday 27 Aug, 2PM (local time) - 3.5ft (1.1m), 17s period, S swell with 702 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 1.1m 17s and forecast to arrive on Thursday (Aug 27) at 2PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 10s period and expected on Friday (Aug 28) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2PM (Thu 27th Aug) | 3.5ft (1.1m) 17s |
Table - best surf conditions forecast for Kalapaki Beach over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s break down what’s coming for our stretch of coast.
Straight up, the 16-day window is looking pretty flat and messy. The only spot on the radar is Kalapaki Beach, a reef break that’s fairly consistent and works best for beginners. The water temp is sitting at 81°F, which is about 0.5°F warmer than average for this time of year, so nothing too unusual.
The first bit of action worth mentioning kicks off Wednesday afternoon, the 26th of August. We’ve got a small S swell creeping in at 3 ft, with a long period of 18 seconds—that’s proper groundswell energy, but it’s weak at just 705 units of combined energy. The wind is cross from the NE at 12 mph, so it’s not clean, and the forecast is calling it marginal. Honestly, not a lot to get excited about.
Thursday the 27th sees a slight bump in the swell, up to 4 ft on the morning, still from the S with a 17-second period, and combined energy rising to 951. The wind picks up a touch to 16 mph cross from the ENE, so there’s a cross-chop. The afternoon drops back to 3 ft and 765 energy. Still all marginal.
Friday the 28th brings a drop in period to 14 seconds, with swell holding around 3 ft from the S. Energy sits around 549-566. The wind is cross from the NE and ENE at 12-16 mph—still that moderate cross-shore chop. The afternoon is called poor.
Saturday the 29th is a write-off. The morning shows a 5 ft swell from the ENE, but it’s a short-period 7-second windswell, and the energy is weak at 620. The wind is cross from the ENE at 16 mph. The afternoon drops to 3 ft from the S. Both are poor.
Sunday the 30th through to Tuesday the 1st of September keeps the same pattern: ENE windswell around 6 ft to 6 ft, period 7-9 seconds, and moderate cross-shore winds. The combined energy climbs a bit, hitting 970 by Tuesday morning, but it’s all marginal and choppy. A few rain showers mixed in.
Wednesday the 2nd of September shows a 7 ft morning swell from the ENE, period 8 seconds, energy at 958—still just marginal. That size is getting a bit much for beginners, and the wind is still cross NE at 12-16 mph. The afternoon settles back to 6 ft.
Thursday the 3rd offers a slight improvement. The swell drops to 6 ft in the morning, still ENE and 8 seconds, but the wind eases to 9 mph cross from the ENE, making for a gentler cross-shore with a slight chop. Energy is 718. The afternoon is 5 ft and 650 energy. The forecast nudges up to a 2/10, so it’s the best of a pretty average bunch.
Friday the 4th and Saturday the 5th see the swell settle to 5 ft-5 ft, still from the ENE. The wind turns light and cross-onshore, with a bit of rain around. The Saturday afternoon has a 3 mph onshore from the ESE—might be the most glassy moment, but it’s a small 5 ft swell with 8-second period.
Then from Sunday the 6th of September onward, the direction shifts to a SSW groundswell, period 15-17 seconds, but the swell drops to 3 ft-3 ft. The wind turns onshore from the SSE and SE, and the energy is moderate but the conditions are poor or marginal. By the 10th of September, we’re back to ENE windswell, 5 ft, but with a 12-second period and 838 energy on the afternoon. Still, the wind is cross from the NE at 16 mph, so not clean.
The standout? If I had to pick one, it’s Thursday the 3rd of September. The swell is 6 ft from the ENE, light 9 mph cross wind, and the energy is moderate at 718. It’s marginal, but it’s the best we’ve got. The long period groundswells later in the run are small and have onshore winds, so they’re not worth planning around.
Overall, this stretch is a waiting game. The consistency is fair, but the quality is low. For the size and wind setup, some of these days might actually be more fun for kite surfing than paddle surfing, especially the stronger windswell days. Keep an eye on the forecasts, but don’t hold your breath.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Fri night. Warm (max 27°C on Wed afternoon, min 25°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 13mm), heaviest on Tue morning. Warm (max 27°C on Tue morning, min 25°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Wed 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | ||||||||||||||
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 18 | S 19 | S 17 | S 17 | S 15 | S 14 | S 14 | S 14 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 8 |
Wave Graph | ||||||||||||||||||||
395 | 573 | 699 | 553 | 567 | 334 | 320 | 294 | 232 | 215 | 293 | 344 | 263 | 303 | 310 | 441 | 434 | 512 | 549 | 488 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross | cross | cross | cross | cross | cross-on |
High Tide | 3:14PM0.64m | 3:02AM0.35m | 3:38PM0.62m | 3:40AM0.38m | 4:02PM0.59m | 4:22AM0.42m | 4:25PM0.55m | 5:07AM0.46m | 4:47PM0.49m | 5:58AM0.49m | 5:08PM0.42m | 6:57AM0.52m | 5:24PM0.35m | |||||||
Low Tide | 9:50PM0.13m | 8:40AM0.04m | 10:08PM0.11m | 9:19AM0.06m | 10:29PM0.08m | 10:02AM0.10m | 10:52PM0.06m | 10:51AM0.15m | 11:17PM0.04m | 11:48AM0.20m | 11:45PM0.03m | 1:02PM0.26m | 00:18AM0.03m | |||||||
— | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:20 | — | — | 6:20 | — | — | |
6:59 | — | — | 6:58 | — | — | 6:57 | — | — | 6:55 | — | — | 6:54 | — | — | 6:54 | — | — | 6:53 | — | |
mm | — | — | — | — | — | — | — | 4 | — | — | 1 | 1 | — | 3 | 2 | 1 | 2 | 3 | 2 | 8 |
Temp °C | 27 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 26 | 26 | 26 | 25 | 26 | 26 | 26 | 27 | 27 | 26 |
Feels °C | 27 | 24 | 25 | 25 | 24 | 25 | 25 | 24 | 24 | 24 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 28 | 28 | 27 |
Swell 1 Height (m) Direction Period (s) | S 18 | S 19 | S 17 | S 17 | S 15 | S 14 | S 14 | S 14 | S 13 | S 13 | S 12 | S 12 | S 12 | SSW 15 | S 11 | S 11 | SSE 10 | SSW 18 | S 18 | S 17 |
395 | 573 | 699 | 553 | 567 | 334 | 320 | 294 | 219 | 215 | 141 | 100 | 100 | 196 | 85 | 82 | 108 | 333 | 311 | 364 | |
Swell 2 Height (m) Direction Period (s) | SSW 13 | SSW 13 | SSW 12 | S 12 | W 10 | SSW 11 | E 15 | E 14 | E 13 | E 13 | SSW 17 | SSW 16 | SSW 16 | S 11 | SSW 15 | SSW 14 | S 19 | S 10 | S 9 | S 10 |
133 | 135 | 79 | 73 | 8 | 39 | 72 | 107 | 89 | 125 | 186 | 171 | 162 | 89 | 191 | 180 | 273 | 47 | 45 | 51 | |
Swell 3 Height (m) Direction Period (s) | SE 8 | W 10 | NNE 8 | W 10 | E 18 | E 16 | SSW 19 | SW 19 | SW 18 | SSW 17 | E 12 | E 12 | ENE 11 | SSW 20 | E 10 | SSW 19 | SW 14 | SSW 14 | SW 14 | SW 14 |
34 | 7 | 7 | 7 | 24 | 45 | 35 | 90 | 80 | 115 | 75 | 71 | 41 | 75 | 31 | 124 | 51 | 78 | 53 | 52 | |
Wind waves Height (m) Direction Period (s) | ENE 6 | E 6 | E 7 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 8 |
143 | 173 | 173 | 139 | 160 | 131 | 139 | 205 | 232 | 212 | 293 | 344 | 263 | 303 | 310 | 441 | 434 | 512 | 549 | 488 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 17 | 17 | 17 | 17 | 17 | 17 | 31 | 17 | 33 | 39 | 17 | 17 | 17 | 17 | 31 | 17 | 14 | 31 | 17 | 17 |
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)
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











