Mild (5–15°C), lengthening days, blossoms (cherry, apple), return of migratory birds. Festivals: Easter markets, Walpurgisnacht.
Warmest (18–25°C), long daylight (up to 17 hrs). Outdoor life: beer gardens, festivals (Rhine in Flames, Christopher Street Day), swimming lakes. Note: Oktoberfest starts in September.
Cooling (10–18°C), spectacular foliage in forests and vineyards. Harvest festivals (Erntedankfest), wine festivals, cozy "Gemütlichkeit" season.
Cold (–1 to 5°C), snow common in south/east and mountains. Christmas markets (Weihnachtsmärkte), skiing in Alps/Bavarian Forest, Glühwein, Silvester (New Year's) fireworks.
Climate change is shifting patterns—earlier springs, hotter summers, less reliable snow—but the four-season rhythm remains central to German culture.