Average temperatures, rainfall and packing tips for Helsinki, Finland in October
October in Helsinki is typically cool, with average daytime highs around 11°C and nights near 6°C. Temperature-wise it sits mid-range for Helsinki (the 6th warmest month).
Expect some rain: around 64 mm falls in Helsinki during October on average.
If your dates are flexible, the most comfortable months in Helsinki are usually June, July, August and September.
← Helsinki weather tomorrow (live)
In October, Helsinki averages a daytime high of about 11°C and a night-time low of around 6°C, based on recent historical data.
Expect some rain: around 64 mm falls in Helsinki during October on average.
October is a workable time to visit Helsinki, with cool days - just pack accordingly. If your dates are flexible, the most comfortable months in Helsinki are usually June, July, August and September.