Greece is not a tropical country. It gets cold and rainy in the winter, nothing to impress someone from Norway (or Minnesota), but too cold for the beach.
Even April is too cold for beach setting.
I've compared weather information from a number of sources, tried to resolve the contradictions that I found to give you a consensus opinion - see at right. This would be true for Athens, it would be colder in the north and at elevation. The average low for Thessaloniki in January would be right at freezing.
There is a ski industry in Greece; at elevation in the winter it is very cold. And there is some evidence that global warming is leading to more instability.
A good source, with info by individual city is World Weather Information (Up 4/27/14)
For those of you who don't like numbers, here are two points to keep in mind:
(i). Greek temperatures vary more by altitude and exposure than by north to south. There is a differences from the islands to the far north. Height above sea level and exposure to ocean breezes make more difference, but the north is colder.
(ii). Winter is winter. Greece is not a tropical country, it's too far north. In winter it is dark, cold, rainy and windy. That can have a stark beauty, but you aren't going to sit on the beach all day in that weather
Data comes from "Athens: A Knopf Guide," "Greece: Travel Agent's Manual for 1995"; "Cadogan Greek Island Guide," 5th ed, 1993; "Thomas Cook Greek Island Hopping, 1995", "Greece: the Rough Guide," 1993; Rick Steves' "Europe through the Back door, 1995; and last, but definitely not least, The National Technical University of Athens (While this link is still up, 4/27/14, the link to climate info has changed and I can't find it.)
|Last modified 4/27/14; posted 8/29/04; original content © 2014, 2004 John P. Nordin|