October weather forecast
Mariehamn Airport, Finland

October amplifies the autumn vibes in Mariehamn Airport with temperatures falling further and reduced daylight hours. As compared to the previous month, October experiences a drop in temperature, with the minimum temperature being 4°C (39.2°F). The rain gods continue to grace the city, although most days are simply cloudy or partly cloudy. Sunshine hours get increasingly scarce, and the sea temperature follows a declining trajectory. Fall colors paint the landscape as the UV index takes a hit.

Temperature

The onset of October comes with a shift in the average high-temperature, falling from a mild 14°C (57.2°F) in September to a frosty 9°C (48.2°F). Mariehamn Airport notes a steady average temperature of 4°C (39.2°F) during the nights of October.

Rainfall

In Mariehamn Airport, during October, the rain falls for 16 days and regularly aggregates up to 53mm (2.09") of precipitation. Throughout the year, in Mariehamn Airport, there are 176 rainfall days, and 508mm (20") of precipitation is accumulated.

Sea temperature

In October, the average sea temperature is 9°C (48.2°F).
Note: Beware when you're in 9°C (48.2°F) waters; 13°C (55.4°F) is chilling and anything below 10°C (50°F) could cause breathing hindrance and a sudden cold shock, given your physical condition.

Daylight

The average length of the day in October in Mariehamn Airport is 10h and 7min.
On the first day of October in Mariehamn Airport, sunrise is at 07:47 and sunset at 19:12 EEST. On the last day of the month, sunrise is at 08:01 and sunset at 16:46 EET.
Note: On Sunday, 27. October 2024, at 04:00, Daylight Saving Time ends, and the time zone changes from EEST to EET. Daylight Saving Time starts again on Sunday, 30. March 2025, at 03:00; consequently, the time zone reverts from EET to EEST.

Sunshine

In Mariehamn Airport, the average sunshine in October is 2h.

UV index

In October, the average daily maximum UV index is 1. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum daily UV index of 1 during October translates into the following directions:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.