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Surf forecast for Poipu Outer Reef

Map showing Poipu Outer Reef
Wwvs
1.7ft 3s.
9kJ
Swl 3
2.2ft 12s.
181kJ
Swl 2
2.5ft 9s.
146kJ
Swl 1
2.9ft 12s.
315kJ
Wnd
12mph
17mph
Tide
๐Ÿ’จmph
๐ŸŒŠft
โฑ๏ธs.
โšก๏ธkJ
Timezone:
Pacific/Honolulu
Forecast updated:
13/10, 08:00 pm
Wind: SN UNITY Atmos
(20261014 06z)
Waves: SN UNITY WAVE
(20261014 06z)

Weather

Wednesday 14/10

Water temperature
80ยฐF
Daily average
Air temperatureBeta
Over water
77โ€“78ยฐF
On shore
68โ€“81ยฐF
Moon phase
Waxing crescent
17% illuminated
Closest moon phase
First quarter
Sun 18/10 06:14 am
Tide range
0.2ft - 2.2ft
Low 10:16 pm ยท High 05:48 am
Next spring tide
Tue 27/10
2.7ft range
Next neap tide
Sat 17/10
1.2ft range

Timeline

Wed 14/10 to Fri 16/10
No surf windows (3 days)

Poipu Outer Reef Surf Forecast Guide

Overview

Poipu Outer Reef is a heavy, expert-level reef break on Kauai's south shore, throwing a shallow left barrel alongside a longer, more sloped right. The bottom is a mix of rock, coral and lava sitting very shallow, so it demands respect and rewards experience. Mellower, more popular waves break closer to the beach at Lemon Drops and Waiohai, and heading west past Poipu you'll find PKs, Centers, Heroins and Acid Drop, each with its own mood but all carrying the same shallow-reef risk.

When It Works

The break draws swell from southeast through south to west (SE-S-W), with occasional wrapping west-northwest swells filling in. It works from 1.5 m / 5 ft to 3 m / 10 ft, so you want an overhead-plus pulse to get it moving. This is primarily a summer wave that stays consistently good and clean through the warmer months, with spring and autumn also in the mix and rare winter WNW swells occasionally big enough to break out there.

Wind and Tide

Look for calm conditions or offshore wind, with north-northeast (NNE) the offshore direction and a workable window running from north-northwest through north to east. It's best on mid to high tide, and a rising tide is generally the better call, with the shallow left in particular safest when there's more water covering the reef.

Local Tips

This is an expert-only wave, best suited to shortboards and bodyboards. The lineup usually stays fairly quiet, though it can draw a decent pack when it's firing. Humility and respect go a long way out here. Keep the shallow reef and the chance of sharks in mind before you paddle out.

Access

Paddle straight out to the outside reef from Kiahuna Beach, where there's also a parking lot. Be ready for a long paddle, and note that currents can get bad at times.

Surf spots near Poipu Outer Reef

Shipwrecks
Hawaii, United States
Unknown break
Wed 14
Thu 15
Fri 16
Sat 17
Sun 18
Brenneckes
Hawaii, United States
Beach break
Wed 14
Thu 15
Fri 16
Sat 17
Sun 18
Poipu Outer Reef
Hawaii, United States
Reef break
Wed 14
Thu 15
Fri 16
Sat 17
Sun 18
Acid Drop
Hawaii, United States
Reef break
Wed 14
Thu 15
Fri 16
Sat 17
Sun 18
PK's
Hawaii, United States
Reef break
Wed 14
Thu 15
Fri 16
Sat 17
Sun 18

Frequently asked questions

What are good surfing conditions for Poipu Outer Reef?

Poipu Outer Reef is usually best with southeast through south to west (SE-S-W) swell around 1.5 m / 5 ft to 3 m / 10 ft, wind from north-northwest through north to east (NNW-N-E), with north-northeast (NNE) offshore, and mid to high tide.

Where is the surf spot Poipu Outer Reef?

Poipu Outer Reef is a surf spot in Poipu, Hawaii, United States.

What is the surf break like at Poipu Outer Reef?

Poipu Outer Reef is a right-and-left reef break over rock, coral, and lava. Expect a fairly quiet crowd and a neutral lineup.

What season is best for surfing Poipu Outer Reef?

The main surf season at Poipu Outer Reef is spring, summer, and autumn.

What surfing skill level is Poipu Outer Reef suitable for?

Poipu Outer Reef can suit expert surfers.

Is Poipu Outer Reef beginner friendly for surfing?

Poipu Outer Reef is better suited to expert surfers.

What surfboards work at Poipu Outer Reef?

Shortboard and Bodyboard are common choices at Poipu Outer Reef.

What surf spots are near Poipu Outer Reef?

Other nearby surf spots are Brenneckes, Acid Drop, PK's, and Shipwrecks.

What swell direction works for surfing at Poipu Outer Reef?

Poipu Outer Reef can work with swell from southeast through south to west (SE-S-W).

What swell size works for surfing at Poipu Outer Reef?

Poipu Outer Reef usually works with swell around 1.5 m / 5 ft to 3 m / 10 ft.

What wind direction is best for surfing at Poipu Outer Reef?

Poipu Outer Reef usually works with wind from north-northwest through north to east (NNW-N-E); north-northeast (NNE) is offshore.

What wind direction is offshore for surfing at Poipu Outer Reef?

North-northeast (NNE) is offshore at Poipu Outer Reef.

What tide works best for surfing at Poipu Outer Reef?

Poipu Outer Reef works best around mid to high tide. A rising tide is usually better here.

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Readme

Welcome! If youโ€™re new to surf forecasting, check out this quick guide.

Forecast Table

The forecast table (the section on the page with all the numbers) is designed to pack as much information in the screen as possible. Although intimidating at first, it will help you make informed decisions about the waves faster, trust me :D. The table consists of roughly four sections, time and predictions, wind, waves, and tides:

๐Ÿ”ฎ Time and predictions section

Here we show the forecast thour and the overall surf quality prediction. This is determined based on the wave, wind and tide quality prediction. These individual predictions can be found on the forecast map.

๐Ÿ’จ Wind section

The first row on the table (with the ๐Ÿ’จ icon) shows wind speed, direction and gust. The more the wind speed the more aggressive the color (from blue, green, orange to red).

๐ŸŒŠ Wave section

The waves section consists of three rows, one for wave height and direction, one for period and one for wave energy. Our algorithm chooses the "dominant wave" using spot-adjusted surf energy (depth + directional fit). This is usually the first swell partition, but during local storms it can switch to wind waves. If that happens, values are shown in gray and italic.

๐ŸŽฏ Model agreement

The small letter in the wind and wave cells shows how closely the weather models we blend agree for that hour.

  • H, the models line up closely.
  • M, the models differ somewhat, so conditions may still shift.
  • L, the models disagree, so check again closer to your session.
  • A dash means only one model covered this hour, so there was nothing to compare.

For wind we compare each model's wind vector, plus gusts where every model reports them. For waves we compare height, period and direction of the matched swell systems.

It is a measure of model agreement, not a probability that the forecast is right.

๐ŸŒ’ Tide section

The tide section consists of a row with the actual heights per hour (measured at the half hour) and a table that displays the flow of the tide and the extremes (lows and highs).

Forecast map

The forecast map consists of arrows. These arrows represent all wave partitions (swell partitions and wind wave partition) and the wind. This allows you to see things like: a secondary swell or wind waves messes up the surf, or the wind is just a tick offshore so very surfable. Click a metric label in the bottom left to bring that arrow to the front โ€” handy when arrows overlap.

Forecast Cheat Sheet

Short on time? Focus on wave energy. Itโ€™s the best single metric to gauge how big and powerful the waves will be.

Click any table cell to jump to that forecast hour. The map will update with forecast arrows, so you can see if wind and swell direction are lining up.

Use the table sidebar to switch units for height and speed.

Log your surf sessions to compare forecasts with real sessions and sharpen future predictions.

Models and Updates

Surfnerd blends multiple global and local wind and swell models using advanced interpolation and spatial techniques to create an "ensemble" forecast. Forecasts are refreshed hourly.

Surf Predictions

Our AI-driven algorithm scores surf quality, shown by green, orange, and gray dots. Each forecast hour is rated for wind, swell, and tide quality, then combined into an overall score. Hereโ€™s the scale:

Perfect
Good
Average
Bad or No Data

Session logs also feed the algorithm โ€” the more you log, the smarter your forecasts get.

With Surfnerd, no more "you should have been here yesterday"

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