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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.
Average Weather in June in Mykonos Greece. In Mykonos, the month of June is characterized by rising daily high temperatures, with daily highs increasing by 6Â°F, from 75Â°F to 80Â°F over the course of the month, and rarely exceeding 85Â°F or dropping below 70Â°F.