The Nortada ("north wind") is a summer wind along the west coast of the

Iberian Peninsula The Iberian Peninsula ( ), also known as Iberia, is a peninsula in south-western Europe. Mostly separated from the rest of the European landmass by the Pyrenees, it includes the territories of peninsular Spain and Continental Portugal, comprisin ...

from northerly directions, which occurs mainly between June and September. Guincho June 2013-3

The main wind direction is north-northwest. The wind is created primarily by a

thermal low Thermal lows, or heat lows, are non- frontal low-pressure areas that occur over the continents in the subtropics during the warm season, as the result of intense heating when compared to their surrounding environments.Glossary of Meteorology (200 ...

over the Iberian Peninsula and an

Azores High The Azores High also known as North Atlantic (Subtropical) High/Anticyclone or the Bermuda- High, is a large subtropical semi-permanent centre of high atmospheric pressure typically found south of the Azores in the Atlantic Ocean, at the Horse ...

above the Atlantic. The months with the highest frequency of heat lows thus coincide with the months of the most frequent occurrence of the Nortada. The wind is strengthened locally by thermal but also

orographic Orography is the study of the topographic relief of mountains, and can more broadly include hills, and any part of a region's elevated terrain. Orography (also known as ''oreography'', ''orology,'' or ''oreology'') falls within the broader disc ...

influences, as, for instance, by mountain ranges. The wind often leads in the coastal area to coastal

upwelling Upwelling is an physical oceanography, oceanographic phenomenon that involves wind-driven motion of dense, cooler, and usually nutrient-rich water from deep water towards the ocean surface. It replaces the warmer and usually nutrient-depleted sur ...

of cool water, which, in turn often leads to a strengthening of the wind. A popular

windsurfing Windsurfing is a wind-propelled water sport that is a combination of sailing and surfing. It is also referred to as "sailboarding" and "boardsailing", and emerged in the late 1960s from the Californian aerospace and surf culture. Windsurfing gain ...

and

kitesurfing Kiteboarding or kitesurfing is a sport that involves using wind power with a large power kite to pull a rider across a water, land, snow, sand, or other surface. It combines the aspects of paragliding, surfing, windsurfing, skateboarding, snow ...

spot, where such a local amplification occurs, is for example the

Praia do Guincho Praia do Guincho (English language, English: Guincho Beach) is an Atlantic beach located on Portugal's Estoril coast, 5 km from the town of Cascais, and is located in the municipality of Cascais, more precisely in the parishes of Cascais e Es ...

near

Lisbon Lisbon ( ; ) is the capital and largest city of Portugal, with an estimated population of 567,131, as of 2023, within its administrative limits and 3,028,000 within the Lisbon Metropolitan Area, metropolis, as of 2025. Lisbon is mainlan ...

. A strengthening also occurs at the Praia do Martinhal in Sagres, where the wind blows then fully offshore.

References

Winds {{wind-stub