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Surf forecast for Praia Grande

Tide
⏱️s.
⚡️kJ
Timezone:
Europe/Lisbon
Forecast updated:
19/06, 07:00
Wind: SN UNITY Atmos
(20260618 18z)
Waves: SN UNITY WAVE
(20260618 18z)
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Praia Grande Surf Forecast Guide

Overview

Praia Grande is a large sandy beach and a big tourist destination for the Lisbon population. It’s an exposed beachbreak over sand, with lefts and rights along the beach. When it has energy, it can form long walls or fast, heavy wedges, with plenty of space to spread out.

When It Works

The beach is a consistent swell catcher, especially off season. It’s best in autumn and spring, with September to November and March to May standing out.

Praia Grande is usable from 0.6 m / 2 ft to 2.4 m / 8 ft. It takes swell from the north to southwest, with west to north-northwest also suiting the beach.

Wind and Tide

The best wind is east, with a workable wind window from east-northeast to southeast. Still afternoons can often turn onshore locally.

Low to mid tide is best. A rising tide is better, and high tide can get heavy with sections of shore dump.

Local Tips

Line-ups can get busy when the waves are good, especially on weekends and peak times, but there is room to spread out. Praia Pequena, the northern extension of the beach, often has quieter waves.

It suits a wide mix of surfers, from beginners to experts, and works for shortboards, funboards, longboards, fish and bodyboards. When the swell picks up, expect powerful waves, lots of duck dives and shifting rips. Watch for heavy shorebreak, crowds and rips.

Access

There is plenty of parking at the beach, but it can get hectic on weekends and in summer.

Surf spots near Praia Grande

Praia Grande
Lisbon, Portugal
Beach break
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Praia Grande
Lisbon, Portugal
Beach break
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Praia das Maçás
Lisbon, Portugal
Beach break
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Praia da Adraga
Lisbon, Portugal
Unknown break
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Praia da Ursa
Lisbon, Portugal
Unknown break
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23

Frequently asked questions

What are good surfing conditions for Praia Grande?

Praia Grande is usually best with west to north-northwest (W-NNW) swell around 0.6 m / 2 ft to 2.4 m / 8 ft, wind from east-northeast to southeast (ENE-SE), with east (E) offshore, and any tide.

Where is the surf spot Praia Grande?

Praia Grande is a surf spot in Colares, Lisbon, Portugal.

What is the surf break like at Praia Grande?

Praia Grande is a right-and-left beach break over sand. Expect a moderate crowd and a somewhat reserved lineup.

What season is best for surfing Praia Grande?

The main surf season at Praia Grande is autumn and spring.

What surfing skill level is Praia Grande suitable for?

Praia Grande can suit beginner, intermediate, and expert surfers.

Is Praia Grande beginner friendly for surfing?

Yes. Praia Grande can suit beginner surfers when conditions are manageable.

What surfboards work at Praia Grande?

Shortboard, Funboard, Longboard, Fish, and Bodyboard are common choices at Praia Grande.

What surf spots are near Praia Grande?

Other nearby surf spots are Praia da Adraga, Praia das Maçás, and Praia da Ursa.

What swell direction works for surfing at Praia Grande?

Praia Grande can work with swell from west to north-northwest (W-NNW).

What swell size works for surfing at Praia Grande?

Praia Grande usually works with swell around 0.6 m / 2 ft to 2.4 m / 8 ft.

What wind direction is best for surfing at Praia Grande?

Praia Grande usually works with wind from east-northeast to southeast (ENE-SE); east (E) is offshore.

What wind direction is offshore for surfing at Praia Grande?

East (E) is offshore at Praia Grande.

What tide works best for surfing at Praia Grande?

Praia Grande can work on all tides. A rising tide is usually better here.

Confidence

Confidence tells you how much the weather models agree on the forecast.

  • High confidence: Models agree closely; forecast is reliable.
  • Medium confidence: Some disagreement; conditions may shift slightly.
  • Low confidence: Models diverge; treat forecast with caution.

We calculate the wind confidence by comparing wind speed, gust and direction from multiple models (like GFS, ECMWF, Arome, and Harmonie) and seeing how closely they match. For wave certainty we compare height, period and direction, also on multiple models. They are weighted, meaning that some models count more than others, depending on how good they are for a certain spot.

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Readme

Welcome! If you’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:

🔮 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.

💨 Wind section

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

🌊 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.

🌒 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 — handy when arrows overlap.

Forecast Cheat Sheet

Short on time? Focus on wave energy. It’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. Here’s the scale:

Perfect
Good
Average
Bad or No Data

Session logs also feed the algorithm — the more you log, the smarter your forecasts get.

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