The weather in Aachen can be described as temperate oceanic, with mild temperatures and moderate rainfall throughout the year. Summers are usually warm with an average temperature of around 20-25°C (68-77°F), while winters can be cold and damp with temperatures averaging around 0-5°C (32-41°F). Rainfall is distributed fairly evenly throughout the year, although the months of May and June tend to be the driest. Snowfall is also common during the winter months. It’s always a good idea to check the forecast before traveling to Aachen and pack accordingly.