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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.
The 7 day weather forecast summary for Mykonos: Reviewing the forecast for Mykonos Over the next 7 days and the average daytime maximum temperature will be around 31Â°C, with a high for the week of 33Â°C expected on the afternoon of Thursday 18th. The mean minimum temperature will be 24Â°C, dipping to its lowest on the morning of Thursday 25th at 23Â°C.