Planning for the weather is a good way to make your trip to Mykolaiv relaxing and enjoyable, especially when you’re splurging. The hottest months are usually August and July, with an average temperature of 18°C, while the coldest months are January and February, with an average of 0°C. The snowiest months in Mykolaiv are January, December, November and April, with each month seeing an average of 30 cm of snowfall.