Winter in the Peloponnese is mild, within a week there are perhaps two or three rainy days; the rest are mild, quiet and a bit sunny, as in the beginning of spring in Moscow. The average daily temperature is + 12-14 ° C, with variation of 6-7 degrees in either direction. In the mountains, the temperature is 10-15 degrees lower with snow fall, which allows the ski resorts to function. It is definitely best to celebrate the New Year or Christmas in a mountain village, where you can plunge into the traditional family atmosphere-- especially if you have friends in the Peloponnese. If you like parades and noisy fun, choose a city like Kalamata or Nafplio.
In mid-January, the real miracle begins: the Alkeonides. They are something like our Indian summer, but only in the middle of winter. The temperature rises to + 16-18 ° C and quiet, sunny weather emerges. This phenomenon usually lasts about a week; the most daring even swim. In fact, sea water in January is warmer than in March, and usually remains at around +17 ° C. In the shallow waters of the lagoons, or at locations where the thermal springs flow into the sea, the temperature can reach +20 ° С.
In February, preparations for the carnival begin. The largest, not only in the Peloponnese but in all of Greece, takes place in Patras. If you want to see an older version, you can go to one of the villages of mountainous Arcadia, and if you want to see the "Venetian Carnival", then come along to Nafplio.