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Surf forecast for Ribeira d'Ilhas

Tide
⏱️s.
⚡️kJ
Timezone:
Europe/Lisbon
Forecast updated:
19/06, 01:00
Wind: SN UNITY Atmos
(20260618 18z)
Waves: SN UNITY WAVE
(20260618 18z)
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Timeline

Ribeira d'Ilhas Surf Forecast Guide

Overview

Ribeira d'Ilhas is a high-quality right-hand reef in a cliff-lined sandy bay, with long walls that can run for over 200 m on good days. The wave breaks over uneven reef and sand-covered reef, and it has a flexible setup that often has something worth surfing.

Pontinha is the northern outside section. It is ridden less often, works best in medium swells, and only occasionally links with the main break.

When It Works

The optimal swell direction is northwest. The broader swell window runs from southwest through west-northwest to north-northwest.

Ribeira d'Ilhas is usable from 0.3 m / 1 ft to 3.7 m / 12 ft, from small waves up to double overhead plus. The best season is September to May, with spring, autumn, and winter the main surf seasons.

Wind and Tide

The offshore wind direction is east. A workable wind window runs from north-northeast through east to south-southeast.

It can break through all tides, and a rising tide is better. Mid tide is optimal.

Local Tips

It can suit beginners, intermediates, and experts, depending on the day. Shortboards, fish, longboards, and bodyboards all make sense here.

The paddle out is usually easy: launch from the beach south of the wave and paddle around rather than through the lineup.

Ribeira d'Ilhas is popular and can get very crowded, especially when it is busy and at its best. Watch for crowds, some rips, urchins, and water that is not very clean.

Access

Access is easy, with parking at the beach, a car park with free parking, and roadside parking.

Facilities are good, with restrooms, showers, camping, a lifeguard, surf school, surf shop, café, and beach bar.

Surf spots near Ribeira d'Ilhas

Ribeira d'Ilhas
Lisboa, Portugal
Reef break
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Reef
Lisbon, Portugal
Reef break
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Reef
Lisbon, Portugal
Reef break
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Backdoor
Lisbon, Portugal
Reef break
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Pedra Branca
Lisbon, Portugal
Reef break
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23

Frequently asked questions

What are good surfing conditions for Ribeira d'Ilhas?

Ribeira d'Ilhas is usually best with swell from southwest through west-northwest to north-northwest (SW-WNW-NNW), ideally northwest (NW) around 0.3 m / 1 ft to 3.7 m / 12 ft, wind from north-northeast through east to south-southeast (NNE-E-SSE), with east (E) offshore, and any tide. Mid tide is the preferred tide.

Where is the surf spot Ribeira d'Ilhas?

Ribeira d'Ilhas is a surf spot in Santo Isidoro, Lisboa, Portugal.

What is the surf break like at Ribeira d'Ilhas?

Ribeira d'Ilhas is a right reef break over uneven reef and sand. Expect a moderate crowd and a neutral lineup.

What season is best for surfing Ribeira d'Ilhas?

The main surf season at Ribeira d'Ilhas is spring, autumn, and winter.

What surfing skill level is Ribeira d'Ilhas suitable for?

Ribeira d'Ilhas can suit beginner, intermediate, and expert surfers.

Is Ribeira d'Ilhas beginner friendly for surfing?

Yes. Ribeira d'Ilhas can suit beginner surfers when conditions are manageable.

What surfboards work at Ribeira d'Ilhas?

Shortboard, Fish, Longboard, and Bodyboard are common choices at Ribeira d'Ilhas.

What facilities are available for surfers at Ribeira d'Ilhas?

Facilities for surfers at Ribeira d'Ilhas: restrooms, showers, camping, lifeguard, surf school, and surf shop.

Is there parking for surfing at Ribeira d'Ilhas?

Parking around Ribeira d'Ilhas: free parking, roadside parking, and car park.

What surf spots are near Ribeira d'Ilhas?

Other nearby surf spots are Reef, Reef, Backdoor, and Pedra Branca.

What swell direction works for surfing at Ribeira d'Ilhas?

Ribeira d'Ilhas can work with swell from southwest through west-northwest to north-northwest (SW-WNW-NNW); northwest (NW) is usually best.

What swell size works for surfing at Ribeira d'Ilhas?

Ribeira d'Ilhas usually works with swell around 0.3 m / 1 ft to 3.7 m / 12 ft.

What wind direction is best for surfing at Ribeira d'Ilhas?

Ribeira d'Ilhas usually works with wind from north-northeast through east to south-southeast (NNE-E-SSE); east (E) is offshore.

What wind direction is offshore for surfing at Ribeira d'Ilhas?

East (E) is offshore at Ribeira d'Ilhas.

What tide works best for surfing at Ribeira d'Ilhas?

Ribeira d'Ilhas can work on all tides. Mid tide is preferred. A rising tide is usually better here.

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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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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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