March weather forecastHelsinki, Finland

Weather in March

Welcoming spring, March in Helsinki exhibits a significant shift in the weather. Temperatures move away from the intense chill of winter reflecting a potential high of 1.6°C (34.9°F). The advent of spring results in less frequent snowfall, tallying at 140mm (5.51"), as March paves the way for the ensuing warmth. With an expansion in daylight to 11.8h, signs of a swift transition toward brighter days are evident. The increase in UV index, though slight, signals the enhancement in sunshine duration.

Temperature

The start of March in Helsinki brings a subtle rise in the average high-temperature, moving from a subzero cold -1.9°C (28.6°F) in February to a cold 1.6°C (34.9°F). Helsinki records an average temperature drop to a subzero cold -4.1°C (24.6°F) in March.

Rainfall

In Helsinki, during March, the rain falls for 15 days and regularly aggregates up to 38mm (1.5") of precipitation. Throughout the year, there are 182 rainfall days, and 655mm (25.79") of precipitation is accumulated.

Snowfall

January through March, November and December are months with snowfall in Helsinki. March is the last month it regularly snows. Throughout March, Helsinki aggregates 140mm (5.51") of snow. In Helsinki, during the entire year, snow aggregates up to 740mm (29.13").

Sea temperature

February and March, with an average sea temperature of 1°C (33.8°F), are months with the coldest seawater in Helsinki.
Note: In the scenario of swimming, this is assessed as life-threatening and highly risky. The chilling water causes severe discomfort and induces instant hyperventilation. A specialized swimsuit is necessary to counter thermal damage.

Daylight

In March, the average length of the day is 11h and 50min.
On the first day of the month, sunrise is at 07:17 and sunset at 17:47. On the last day of March, in Helsinki, sunrise is at 05:46 and sunset at 19:02 EET.

Sunshine

In March, the average sunshine is 4.5h.

UV index

In March, the average daily maximum UV index in Helsinki is 1. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the average person.
Note: The maximum UV index, 1 during March, leads to the following recommendations:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.