The month of November in Helsinki is characterized by falling daily high temperatures, with daily highs decreasing from 6°C to 2°C over the course of the month, exceeding 10°C or dropping below -3°C only one day in ten. Daily low temperatures range from -2°C to 1°C, falling below -9°C or exceeding 7°C only one day in ten.
Throughout November, the most common forms of precipitation are light rain, moderate rain, moderate snow, and light snow. Typical wind speeds vary from 1 m/s to 6 m/s (light air to moderate breeze), rarely exceeding 8 m/s (fresh breeze).

Over the course of November, the length of the day is very rapidly decreasing. From the start to the end of the month, the length of the day decreases by 2:11 hours, implying an average day-over-day decrease of 4.4 minutes. The shortest day of the month is November 30 with 6:27 hours of daylight; the longest day is November 1 with 8:37 hours of daylight.