April in Greece is akin to summer across the rest of mainland Europe. Highs approach 68°F (20°C) with lows of 52°F (11°C). What is a little suprising is that they get an average of 1.1 inches (28mm) of rain during April which equates to just 0.03 inches (1mm) a day.
Lots of sun
The temperature of Greece in April vary from 13- 17 Degree Centigrades. In most of Greece cities the climate is almost same due to its geographical location.