vejr

Vejr is the Danish word for the conditions of the atmosphere at a specific place and time. It encompasses variables such as temperature, humidity, precipitation, wind, cloud cover, and barometric pressure. The term is distinct from klima, which denotes climate, the long-term patterns rather than short-term conditions. Etymology traces to Old Norse veðr, with cognate forms in Norwegian vær and Swedish väder, reflecting a common Germanic heritage.

Weather is highly variable across locations and seasons and can change quickly, especially in maritime or continental climates. Modern weather information relies on observations from ground stations, weather balloons, radar, and satellites, combined with computer models that simulate the atmosphere. Forecasts range from nowcasting (minutes to a few hours) to short- and medium-range predictions (up to several days). Accuracy generally decreases with longer lead times and more complex conditions. Local forecasts often include warnings for severe weather.

In Denmark, the Danish Meteorological Institute (DMI) and other national and international centers produce vejr forecasts and alerts, distributed via websites, apps, and media. Common Danish phrases include fint vejr (nice weather) and dårligt vejr (bad weather). Beyond daily planning, vejr data inform agriculture, travel, aviation, and climate research. As climates shift, attention to long-term trends in vejr patterns and extremes has grown, with emphasis on data quality and standardized reporting.