The highest day temperature in October 2025 was 56°F. The lowest night temperature was 32°F. The average values for day and night temperatures during October were 49.3°F и 45.1°F respectivly.

The average sea surface temperature in October 2025 for Turku was 52.3°F. The maximum and minimum values were 48.4°F and 57.8°F respectively.

Most of the days in October are gloomy but you can also expect sunny days.

Precipitation total in October for Turku is 1.9 in. It makes october one of the most rainy months of the year.

The average wind speed in October is 10.7 mph. This value is relatively stable throughout the year.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Turku in October is 4.4 hours.