The weather in Boulogne Sur Mer in January is very cold with temperatures between 4°C and 7°C, warm clothes are a must.
You can expect rain for roughly half of the month of January in Boulogne Sur Mer. 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 Boulogne Sur Mer during January. It’s important to get out your snow boots and warm mittens to stay warm while you explore Boulogne Sur Mer.
Our weather forecast can give you a great sense of what weather to expect in Boulogne Sur Mer in January 2026.
If you’re planning to visit Boulogne Sur Mer in the near future, we highly recommend that you review the 14 day weather forecast for Boulogne Sur Mer before you arrive.
