The weather in Achern in December is very cold with temperatures between 0°C and 6°C, warm clothes are a must.
You can expect rain for roughly half of the month of December in Achern. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
You can expect a few days of snow in Achern during December. It’s important to get out your snow boots and warm mittens to stay warm while you explore Achern.
Our weather forecast can give you a great sense of what weather to expect in Achern in December 2025.
If you’re planning to visit Achern in the near future, we highly recommend that you review the 14 day weather forecast for Achern before you arrive.
Temperatures
6° / 0°
Rainy Days
11
Snowy Days
7
Dry Days
13
Rainfall
126
mm
Sun Hours
7.2
Hrs