Kalapaki Beach Surf Break

Lat Long: 21.96° N 159.35° W

Kalapaki Beach Surf Forecast and Surf Report

Issued: 1 pm 10 Sep 2026 (local time)

Forecast update in  hr  min

Today's Kalapaki Beach sea temperature is
26.7°C
0.3° 

Kalapaki Beach surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


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 TypeTime (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 Forecast

Some 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 Summary

Light 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
Rating
(10 max)
0
1
0
0
2
0
0
0
0
0
0
0
0
1
0
0
1
1
1
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.6
ENE
7
1.5
ENE
7
0.6
SW
16
1.4
ENE
8
1.3
ENE
11
1
ENE
10
0.9
ENE
10
0.5
SSW
13
0.5
SW
15
0.4
SSW
15
0.5
SW
14
0.4
SW
14
0.5
SW
22
0.5
SW
21
0.7
SW
20
0.7
SW
19
0.8
SSW
19
0.9
SW
18
0.9
SSW
18
0.8
SSW
17
Wave Graph
Metric surfscale
Energy kJ
280
225
198
226
404
209
169
98
104
84
99
49
227
224
392
384
465
449
541
355
Wind (km/h)
25
ENE
20
ENE
20
ENE
15
ENE
15
ENE
15
E
15
ENE
15
NE
15
ENE
15
ENE
15
ENE
20
ENE
15
NE
15
NE
15
ENE
20
ENE
20
ENE
20
ENE
25
NE
25
NE
Wind State
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
thunderstorm
clear
clear
clear
clear
clear
clear
clear
clear
clear
rain showers
clear
clear
clear
clear
clear
rain showers
rain showers
thunderstorm
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:22
6:22
6:22
6:22
6:24
6:24
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
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
  • Map Icons:
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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

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