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Mykonos: Annual Weather Averages. July is the hottest month in Mykonos with an average temperature of 26Â°C (79Â°F) and the coldest is January at 9Â°C (48Â°F) with the most daily sunshine hours at 14 in July. The wettest month is November with an average of 170mm of rain.
Zakynthos Weather-Ionian Islands Greece. In this page we provide information about the weather conditions in Zakynthos. In the table below, are given the average monthly values.During the summer months and especially in August, rainfall is very rare, while north winds are very common in this month.These winds, known as Meltemia blow from north to south usually starting after 14:00 - 15:00 pm.uring the summer months and especially in August, rainfall is very rare, while north winds are very common in this month. These winds, known as Meltemia blow from north to south usually starting after 14:00 - 15:00 pm.