March weather forecast
Mariehamn Airport, Finland

March marks a transition from freezing winters to milder weather. A noticeable shift in temperature can be felt as the city moves from February's chilling cold to a slightly warmer climate, although the lowest temperature is still -5°C (23°F). It equates to February in terms of the number of rainfall days and quantity, yet stands out with its longer daylight hours. This month also records a significant rise in the UV index from the preceding two months. Sea temperatures record a steady figure, hinting at no significant changes in maritime weather.

Temperature

With the onset of March, Mariehamn Airport experiences a subtle temperature shift, with the average high-temperature moving from a subzero cold -2°C (28.4°F) in February to an icy 1°C (33.8°F). March's nights observe an average temperature of -5°C (23°F).

Rainfall

February and March are months with the least rain when the rain falls for 14 days and typically aggregates up to 25mm (0.98") of rain.

Sea temperature

February and March, with an average sea temperature of 1°C (33.8°F), are months with the coldest seawater.
Note: During swimming events, this situation presents an imminent life risk. Instantaneous loss of breath control makes clear thinking a near impossibility. A specialized swimsuit is compulsory to limit thermal dissipation.

Daylight

In Mariehamn Airport, the average length of the day in March is 11h and 50min.
On the first day of March in Mariehamn Airport, Finland, sunrise is at 07:37 and sunset at 18:08. On the last day of the month, sunrise is at 06:06 and sunset at 19:22 EET.

Sunshine

In March, the average sunshine is 3h.

UV index

The average daily maximum UV index in March in Mariehamn Airport is 1. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: An average UV index of 1 in March transforms into this advice:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. To protect against the Sun's most potent rays, avoid direct exposure around midday. Always opt for UVA and UVB-resistant sunglasses on radiant days.