Weather in Ahvenanmaa in joulukuu
Country-wide climate normals across 15 cities in Ahvenanmaa.
How Hot Is Ahvenanmaa in joulukuu?
Ahvenanmaa's small footprint means the cold is consistent: December averages 3°C, with Mariehamn representative.
Sunshine in Ahvenanmaa in joulukuu
Limited sunshine and short daylight define Ahvenanmaa's December: Mariehamn averages just 0.8h of direct sun, with the sun up between 9:35 am and 3:35 pm. The grey, overcast pattern is consistent across most of the country, with little regional variation in cloud cover.
Does It Rain In Ahvenanmaa In joulukuu?
Moderate rainfall defines Ahvenanmaa's December: Mariehamn averages 56mm across 13 days. Some regions see meaningfully wetter weather, especially coastal or mountain-facing areas, while continental interiors tend toward the drier end of the spectrum.
Is Ahvenanmaa Humid In joulukuu?
Ahvenanmaa is enveloped in tropical-thick humidity through December: Mariehamn averages 81%, and most of the country tracks similarly. The constant moisture makes warm temperatures feel substantially hotter, and even nights bring limited cooling. Light cotton clothing is essential.
Wind In Ahvenanmaa In joulukuu
Breezy conditions cover Ahvenanmaa's December: Mariehamn sits at 34 kph on average, with the country as a whole feeling windy through the day. Afternoon winds pick up across most cities, and coastal regions often run significantly higher.
Does It Snow In Ahvenanmaa In joulukuu?
Light snow occasionally falls across Ahvenanmaa in December — averaging 0.9 days in Mariehamn, with higher elevations seeing more. Coastal and southern regions may see none at all, while inland and mountain areas catch most of the snow. The pattern is brief and patchy rather than sustained.
Cloud Cover In Ahvenanmaa In joulukuu
Heavy overcast covers Ahvenanmaa in December: 78% cloud cover in Mariehamn, with similar grey conditions in most regions. Direct sun is rare, and the pattern is persistent across the country. Coastal and northern regions feel especially heavy.