In 1814-15 Ebenezer Henderson became the first Englishman (Scotsman) to spend the winter in Iceland. He was there to sell and give away Icelandic bibles. He was devout, well educated, a brilliant linguist, and utterly determined to spread the word of God. He was a keen observer and during his year in Iceland, he made enough observations to fill a two volume book based on his visit.
He has a chapter (Ch. IX) that describes winter in Iceland. I thought, when I first read Iceland or the Journal of a Residence in that Island, during the years 1814 and 1815, that it would describe various Christmas customs practiced by the local people of Reykjavik since he spent the winter there.
He does describe the weather. He says that