Hallo all.

One more hint on last week's cold front from a distant low over the northern
Balkans; it caused temperatures to drop more significantly than I thought
after all, as Kato Nevrokopi reported -2C on Friday morning. That value
should be close to a record for low lying areas of the country in May -let
alone the second half of the month.
Temperatures have cought up with the normal values for the time period ever
since. S. Athens made it to +27C today, while the isles have started being
cooler than the mainland, which is, itself, a sign of the onset of summer:
Mykonos didn't exceed +18C. Sunday should see some thermal thunderstorms
over continental Greece again.
It has been a relatively cool May overall with no temperature readings in
Athens in the 30s at all.

Yannis, SE Athens
+18.3C, RH 56%, SLP 1014.1 hPa
http://2004.e-kairos.gr/may.html