Helsinki in October
Find out everything about the water temperature in Helsinki in October. Average, minimum and maximum recorded temperatures as well as daily temperature in October for the last two years. Compare the current month's sea temperature data with other months of the year.
Water temperature in October
Minimum:
44.4 °F
Average:
50.4 °F
Maximum:
58.5 °F
Sea water temperature in Helsinki in October
In the city of Helsinki, the month of October is too cold for swimming. The minimum recorded temperature during this month was 44.4°F on October 31, 2021, with an average temperature being 50.4°F and a maximum temperature reaching 58.5°F on October 1, 2023.
| Date | 10 years average | 2024 | 2023 |
|---|---|---|---|
| Oct 1 | 55.0°F | 58.2°F | 58.5°F |
| Oct 2 | 54.0°F | 56.8°F | 57.5°F |
| Oct 3 | 53.7°F | 56.7°F | 58.5°F |
| Oct 4 | 53.3°F | 56.6°F | 57.4°F |
| Oct 5 | 53.0°F | 56.0°F | 57.3°F |
| Oct 6 | 52.9°F | 56.1°F | 56.9°F |
| Oct 7 | 52.4°F | 55.5°F | 55.4°F |
| Oct 8 | 52.0°F | 55.0°F | 54.9°F |
| Oct 9 | 51.6°F | 54.4°F | 53.9°F |
| Oct 10 | 51.4°F | 53.9°F | 53.3°F |
| Oct 11 | 51.2°F | 53.2°F | 52.3°F |
| Oct 12 | 51.2°F | 54.6°F | 51.8°F |
| Oct 13 | 50.5°F | 53.7°F | 50.5°F |
| Oct 14 | 50.5°F | 53.5°F | 51.0°F |
| Oct 15 | 50.4°F | 54.0°F | 50.9°F |
| Oct 16 | 50.3°F | 53.2°F | 51.0°F |
| Oct 17 | 50.3°F | 52.1°F | 50.3°F |
| Oct 18 | 49.8°F | 51.6°F | 49.4°F |
| Oct 19 | 49.8°F | 52.4°F | 49.2°F |
| Oct 20 | 49.6°F | 53.0°F | 49.1°F |
| Oct 21 | 49.4°F | 51.9°F | 47.9°F |
| Oct 22 | 49.3°F | 51.5°F | 48.2°F |
| Oct 23 | 49.0°F | 51.2°F | 48.0°F |
| Oct 24 | 48.6°F | 50.8°F | 47.8°F |
| Oct 25 | 48.5°F | 50.5°F | 47.1°F |
| Oct 26 | 48.2°F | 50.9°F | 46.9°F |
| Oct 27 | 48.0°F | 51.6°F | 46.7°F |
| Oct 28 | 47.6°F | 50.6°F | 46.2°F |
| Oct 29 | 47.5°F | 49.2°F | 46.7°F |
| Oct 30 | 47.0°F | 48.7°F | 46.4°F |
| Oct 31 | 46.8°F | 48.3°F | 46.2°F |
In an average year, Helsinki offers no days when the water temperature is warm enough to swim comfortably.
The warmest water in Helsinki was recorded on July 17, 2021, reaching a 75.7°F. While the coldest temperature occurred on January 8, 2022, dipping to 32.0°F. The average readings by season are 35.2°F in Winter, 38.3°F in Spring, 60.2°F in Summer, and 51.1°F in Autumn.
October's average temperature is a slight drop from September's average of 58.7°F. In November, the temperature is expected to decrease further, potentially averaging around 44.1°F.
