How many days in Athens do you need?

Depends on how much of the city you want to explore, but ideally, 4 days should be enough to cover all the main sites.

What is the hottest month in Athens?

August. Temperatures can reach upto 40 degree celsius at the time.

What is the rainiest month in Greece?

December, with an average of 97.6mm of rain.

Which is the best month to swim in the sea in Greece?

That would have to be August when the average sea temperature is 25°C. Paired with August being the hottest month, and the sea at a comfortable temperature, this would definitely be most ideal.

What is the coldest month in Athens, Greece?

The chilly weather lasts for about 4 months, from November to March, with an average daily high temperature below 62°F. The coldest month of the year in Athens is January, with an average low of 42°F and a high of 55°F.