Climate averages 1991–2020

Weather in Greece.

ClimaNote covers 11 cities in Greece, starting with Athens, Thessaloníki and Pátra. Open a city for charts and a table of all 12 months, or open a month for a side-by-side comparison of cities in the atlas.

Across these cities the yearly average high ranges from 19.6°C in Thessaloníki to 22.7°C in Irákleion, and yearly rainfall from 318 mm in Glyfáda to 875 mm in Pátra. The hottest city-month is July in Piraeus, with an average high of 33.0°C, and the coolest is January in Évosmos, at 9.0°C. By single month, the most rain falls in December in Pátra, with 126 mm, and the least in August in Glyfáda, with 1.3 mm.

July is the warmest month in 9 cities and August in 1 (in 1 other city two or more months tie); January is the coolest in every city. December is the wettest month in 10 cities and January in 1; August is the driest in 8 cities, July in 2 and June in 1. None of these cities has a month with an average high below 2.0°C, a month with under 1 mm of rain or a month with more than 300 mm of rain.