The temperatures in Helsinki in October are quite cold with temperatures between 6°C and 9°C, warm clothes are a must.
You can expect rain for roughly half of the month of October in Helsinki. 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 Helsinki during October. It’s important to get out your snow boots and warm mittens to stay warm while you explore Helsinki.
Our weather forecast can give you a great sense of what weather to expect in Helsinki in October 2025.
If you’re planning to visit Helsinki in the near future, we highly recommend that you review the 14 day weather forecast for Helsinki before you arrive.
