From clear, turquoise ocean to buzzing clubs and bars, to towering ancient temples, Athens has it all - all year round. If crowds make you crazy, try visiting between late April and mid-June, when the weather is mild and the crowds are much thinner. If you’re there in July and August, get your sightseeing done early, before the midday heat makes you want to do nothing but eat gelato in the shade. In July it's common for temperatures in Athens to soar to 37 °C. In the winter temperatures tend to stay around 5 to 13 °C, with lots of sun.