Oyonnax weather in January 2026

The weather in Oyonnax in January is very cold with temperatures between -1°C and 5°C, warm clothes are a must.

You can expect rain for roughly half of the month of January in Oyonnax. 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 Oyonnax during January. It’s important to get out your snow boots and warm mittens to stay warm while you explore Oyonnax.

Our weather forecast can give you a great sense of what weather to expect in Oyonnax in January 2026.

If you’re planning to visit Oyonnax in the near future, we highly recommend that you review the 14 day weather forecast for Oyonnax before you arrive.