---
title: The sea: IPMA's sea state forecast, place by place
summary: IPMA's forecast of wave height, swell, period, direction and sea surface temperature for its 12 coastal places, as issued and as it changed between our reads.
mount: <div class="ipma" data-view="sea" data-base="./"><p class="meta">This view is drawn in the browser from the JSON files linked below. Without JavaScript, read the tables on this page.</p></div>
head: <link rel="stylesheet" href="../../app/sources/ipma/ipma.css"><script src="../../app/sources/ipma/ipma.js" defer></script><script src="../../app/sources/ipma/ipma-more.js" defer></script>
---
# The sea: IPMA's sea state forecast

> Kept by incident.ipma@web-summit.dinis, 11 November 2026, 11:50 UTC

**Not a warning service.** Everything here is IPMA's, shown as IPMA's, with the time we read it; we add no forecast and no advice. Follow [IPMA](https://www.ipma.pt/) and [ANEPC](https://prociv.gov.pt/).

[IPMA's open data](index.md) · [Warnings over time](warnings.md) · [Stations](stations.md) · [The sea](sea.md) · [Cities: forecast and observed](cities.md) · [The API, mapped](api.md) · [What we learned](learned.md) · [Browse the files](data.md) · [Licence and terms](licence.md)

IPMA forecasts the sea for 12 coastal places, three days at a time: the significant wave height (the "total sea"), the swell's height and peak period, the prevailing direction and the sea surface temperature, each as the day's minimum and maximum. These are **forecasts by IPMA**, shown as IPMA's. Each time a day's forecast changed between two of our reads, both versions are kept: the view draws the latest and lists the earlier ones.

| Coastal place | 2026-11-11 | 2026-11-12 | 2026-11-13 |
|---|---|---|---|
| Figueira da Foz, Costa | 2.5 to **3.5** m, W, swell 2.4 to 3.3 m, 7.3 to 7.8 s, sea 16.3 to 16.4 °C | 2.5 to **3.5** m, W, swell 2.2 to 3 m, 6.2 to 7.4 s, sea 16.3 to 16.4 °C | 2 to **3.5** m, W, swell 2.1 to 3.1 m, 6 to 6.8 s, sea 16.4 to 16.5 °C |
| Faro, costa | 2 to **4** m, SW, swell 0.5 to 3.8 m, 5 to 6.6 s, sea 19.6 to 20 °C | 2 to **3.5** m, SW, swell 1.9 to 3.2 m, 5.9 to 6.8 s, sea 19.5 to 19.7 °C | 1.5 to **2** m, W, swell 1.5 to 1.9 m, 5.6 to 5.9 s, sea 19.3 to 19.5 °C |
| Sagres, costa | 3 to **4** m, SW, swell 2.3 to 3.9 m, 6 to 7.3 s, sea 18.8 to 19 °C | 3 to **3.5** m, W, swell 2.9 to 3.5 m, 6.6 to 7.1 s, sea 18.6 to 18.8 °C | 2 to **3** m, W, swell 2.1 to 3 m, 6.2 to 6.9 s, sea 18.6 to 18.8 °C |
| Lisboa, costa | 3 to **4.5** m, W, swell 2.2 to 3.8 m, 6.3 to 7.5 s, sea 17.4 to 17.6 °C | 3 to **3.5** m, W, swell 2.7 to 3.2 m, 6.6 to 6.9 s, sea 17.3 to 17.5 °C | 2 to **3.5** m, W, swell 2.1 to 3.1 m, 5.8 to 6.8 s, sea 17.3 to 17.4 °C |
| Porto, costa | 2.5 to **3.5** m, W, swell 2.4 to 3.3 m, 6.9 to 8 s, sea 15.6 to 16.1 °C | 2.5 to **3** m, W, swell 2.2 to 2.9 m, 6.1 to 7.7 s, sea 16.1 to 16.2 °C | 2 to **3.5** m, W, swell 1.9 to 3.1 m, 5.9 to 6.7 s, sea 16.2 to 16.3 °C |
| Sines, costa | 3.5 to **4** m, W, swell 2.6 to 3.9 m, 6.2 to 7.6 s, sea 18.1 to 18.6 °C | 3 to **3.5** m, W, swell 2.7 to 3.4 m, 6.7 to 7 s, sea 18.4 to 18.6 °C | 2 to **3.5** m, W, swell 2.2 to 3.2 m, 6.1 to 7 s, sea 18.3 to 18.5 °C |
| Viana do Castelo, costa | 2.5 to **3.5** m, W, swell 2.4 to 3.4 m, 6.8 to 8 s, sea 15.6 to 16.1 °C | 2.5 to **3** m, W, swell 2.2 to 3 m, 6.1 to 7.7 s, sea 16 to 16.1 °C | 2 to **3.5** m, W, swell 1.9 to 3.1 m, 5.9 to 6.7 s, sea 16.1 to 16.3 °C |
| Funchal, costa | 2.5 to **4.5** m, SW, swell 0.4 to 3.8 m, 5.7 to 8 s, sea 21.9 to 22.1 °C | 1.5 to **2.5** m, W, swell 1.7 to 2.4 m, 7.7 to 8.5 s, sea 21.9 to 22.2 °C | 1 to **1.5** m, W, swell 1 to 1.7 m, 5.9 to 8.1 s, sea 21.9 to 22.1 °C |
| Porto Santo, costa | 2 to **4** m, SW, swell 1.1 to 3.2 m, 5.4 to 7.2 s, sea 21.9 to 22 °C | 1.5 to **2** m, W, swell 1.2 to 1.8 m, 6 to 7.1 s, sea 21.8 to 21.9 °C | 1 to **1.5** m, NW, swell 0.9 to 1.2 m, 5.5 to 6.9 s, sea 21.8 to 21.9 °C |
| Ponta Delgada, costa | 1.5 to **2** m, NW, swell 1 to 1.9 m, 5.5 to 7.8 s, sea 20.1 to 20.3 °C | 1.5 to **2** m, W, swell 1.5 to 2 m, 6 to 7.9 s, sea 20.1 to 20.1 °C | 1.5 to **2** m, W, swell 1.3 to 1.6 m, 5.9 to 6.5 s, sea 20 to 20.1 °C |
| Horta, costa | 2 to **2.5** m, N, swell 1.9 to 2.4 m, 6.9 to 7.8 s, sea 19.6 to 19.7 °C | 1.5 to **2** m, N, swell 1.5 to 2.1 m, 6.5 to 8.2 s, sea 19.5 to 19.6 °C | 1.5 to **2** m, N, swell 1.6 to 1.8 m, 6.6 to 7.8 s, sea 19.4 to 19.5 °C |
| Santa Cruz das Flores, costa | 2 to **2.5** m, N, swell 1.6 to 2.2 m, 6.5 to 8.6 s, sea 19.6 to 19.7 °C | 2 to **2** m, NE, swell 1.7 to 2.2 m, 6.9 to 8.8 s, sea 19.6 to 19.7 °C | 1.5 to **2** m, N, swell 1.6 to 1.9 m, 7.2 to 8.1 s, sea 19.5 to 19.6 °C |

In each cell: significant wave height (min to **max**), prevailing direction, swell height, swell peak period, sea surface temperature.

Data: [data/sea.json](data/sea.json) · the data set: [endpoints/sea-forecast.md](endpoints/sea-forecast.md) · rough-sea warnings: [warnings.md](warnings.md). Source: IPMA's hp-daily-sea-forecast-day0 to day2 files, read 2026-11-11 11:49 UTC.