
Surf Forecasts:
Kalapaki Beach surf forecast from 31 Jul 2026:
- Most powerful swell: Sunday 2 Aug, 2AM (local time) - 10ft (3.0m), 8s period, ENE swell with 1,118 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 3.0m 8s and forecast to arrive on Sunday (Aug 02) at 2AM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2AM (Sun 2nd Aug) | 10ft (3.0m) 8s |
Table - best surf conditions forecast for Kalapaki Beach over the next 16 days.
The Lowdown
Right, grab a coffee, let’s have a look at what’s coming up for Kalapaki Beach. This is a reef setup, so it’s mellow, beginner-friendly, and pretty consistent, but unfortunately, the next couple of weeks look like a bit of a write-off. The water here is sitting at 80°, which is pretty much dead average for this time of year, so nothing weird going on there.
The first bit of surf we can talk about kicks off on Thursday morning, 30 July. We’ve got a small, clean-ish swell from the south at 3ft, with a period of 13 seconds – that’s a proper groundswell, but it’s small. The combined energy is moderate (438). The problem is the wind is a light cross-onshore from the east, already messing things up with a bit of wind ripple. It’s poor. That trend continues through Thursday afternoon and into Friday, 31 July, where the swell picks up to 5ft from the east-northeast, but the period drops to a short 7 seconds, and the wind gets stronger, into the moderate breeze range, making it choppy and cross-on. The energy climbs to 773, but it’s junk.
Saturday, 1 August, sees a bigger but messy 8ft swell from the east, with a period of 8 seconds. The cross-shore wind is fresh at 19 mph, making it lumpy with a cross-chop. The energy is strong (1171), but the surf quality is marginal at best. This continues into Sunday, 2 August, with similar conditions.
After that, there’s a long gap of poor to marginal surf. The swell drops back to 5ft by Tuesday, 4 August, and the period finally stretches to 12 seconds, but the wind is still cross-shore and the energy is moderate (811). It’s still not clean.
We don’t see a real standout until the tail end of the forecast. On Monday, 10 August, we get a 3ft south swell with a very long period of 16 seconds. The combined energy is moderate (680), and the wind is a gentle cross-shore from the northeast. This is the best-looking window. The long period means it’s going to be walled up and a bit straight for a beach break, but at a reef like Kalapaki, it should shape up nicely. Best of the run, with clean conditions. The following morning, Tuesday, 11 August, is also worth a paddle with a 3ft south swell, 15-second period, and light offshore winds from the east-southeast. The energy is moderate (634). This is a promising little window, but it’s over a week away, so don’t lock it in just yet.
After that, the surf fades off into tiny, onshore slop for the rest of the period. Honestly, the pick of the 16 days is the Monday, 10 August, and Tuesday, 11 August, mornings. The rest is a battle with the wind. If you’re a beginner, the surf never gets too big for you, but it’s mostly choppy, so you’ll be working for it.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Sat night. Warm (max 27°C on Thu morning, min 24°C on Sat night). Winds increasing (calm on Thu morning, fresh winds from the ENE by Sat night). | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Sun morning, min 24°C on Sun morning). Mainly fresh winds. | ||||||||||||||||||||
Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | |||||||||||||||
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 13 | S 13 | S 13 | ENE 7 | ENE 7 | ENE 7 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 12 | ENE 12 | ENE 11 | ENE 10 | ENE 9 | ENE 9 |
Wave Graph | |||||||||||||||||||||
284 | 276 | 206 | 284 | 420 | 645 | 804 | 792 | 1118 | 755 | 715 | 606 | 404 | 339 | 275 | 706 | 648 | 487 | 318 | 237 | 243 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross-on |
High Tide | 4:44PM0.65m | 4:33AM0.29m | 5:08PM0.61m | 5:22AM0.32m | 5:32PM0.57m | 6:19AM0.34m | 5:54PM0.51m | 7:26AM0.38m | 6:14PM0.44m | 8:45AM0.44m | 6:28PM0.37m | 10:10AM0.50m | |||||||||
Low Tide | 9:25AM0.00m | 11:32PM0.11m | 10:03AM0.04m | 11:56PM0.09m | 10:44AM0.09m | 00:22AM0.07m | 11:33AM0.16m | 00:50AM0.05m | 12:35PM0.23m | 1:21AM0.04m | 2:08PM0.29m | 1:58AM0.03m | 2:46AM0.02m | ||||||||
6:07 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | |
— | 7:17 | — | — | 7:16 | — | — | 7:16 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | |
mm | — | — | — | — | — | — | — | — | 4 | — | — | — | — | — | — | — | — | — | — | — | 2 |
Temp °C | 27 | 27 | 25 | 26 | 26 | 25 | 25 | 26 | 24 | 26 | 26 | 25 | 25 | 26 | 25 | 25 | 25 | 25 | 26 | 26 | 25 |
Feels °C | 29 | 28 | 26 | 26 | 25 | 24 | 23 | 24 | 22 | 24 | 24 | 24 | 24 | 25 | 24 | 26 | 26 | 27 | 27 | 27 | 27 |
Swell 1 Height (m) Direction Period (s) | NE 8 | S 13 | S 13 | S 12 | SW 15 | SSW 15 | E 15 | E 15 | E 14 | E 14 | E 14 | E 13 | E 13 | E 12 | E 13 | SE 8 | SSW 11 | ENE 11 | ENE 10 | SSW 15 | SE 7 |
192 | 276 | 206 | 146 | 232 | 144 | 205 | 150 | 199 | 194 | 140 | 87 | 86 | 78 | 161 | 33 | 51 | 487 | 318 | 87 | 18 | |
Swell 2 Height (m) Direction Period (s) | S 13 | SW 18 | SSW 16 | SSW 16 | S 12 | E 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SW 13 | SSW 13 | SE 6 | SE 9 | SSW 12 | SSE 8 | SSW 11 | SSW 11 | S 12 | SSW 15 |
284 | 152 | 175 | 169 | 141 | 159 | 123 | 123 | 131 | 77 | 68 | 42 | 34 | 14 | 40 | 46 | 23 | 40 | 39 | 46 | 87 | |
Swell 3 Height (m) Direction Period (s) | SW 18 | N 9 | N 8 | E 16 | E 15 | S 12 | S 11 | S 11 | S 11 | N 9 | SE 8 | SSW 13 | SE 7 | SSW 12 | SSW 12 | SSW 16 | SW 16 | SSW 15 | SSE 13 | SSW 11 | S 12 |
154 | 6 | 18 | 174 | 167 | 70 | 39 | 38 | 21 | 14 | 18 | 34 | 14 | 50 | 48 | 26 | 69 | 91 | 55 | 38 | 46 | |
Wind waves Height (m) Direction Period (s) | — | ENE 8 | E 6 | ENE 7 | ENE 7 | ENE 7 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 12 | ENE 12 | — | — | ENE 9 | ENE 9 |
— | 232 | 206 | 284 | 420 | 645 | 804 | 792 | 1118 | 755 | 715 | 606 | 404 | 339 | 275 | 706 | 648 | — | — | 237 | 243 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 14 | 31 | 39 | 39 | 122 | 39 | 47 | 299 | 47 | 39 | 33 | 17 | 31 | 17 | 17 | 31 | 17 | 17 | 31 | 31 | 16 |
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











