France has a temperate climate (although there are wide temperature differences between summer and winter) and is largely influenced by Atlantic weather systems. Southern France benefits from a warm Mediterranean climate whilst Eastern France is partially influenced by a continental air mass (dry climate and warm temperatures in Spring-Summer-Autumn and quite cold temperatures in Winter). The Chateau de Varennes is located in South Burgundy and this region region is blessed with a continental climate featuring long hot Summers, warm Falls and clear, cold weather through the Winter.
It the most sunny part of Burgundy thus the temperatures are higher than in other areas from April to October. It can become hot during the months of July and August. However, relative humidity is often low thus the temperatures are comfortable. This means that day time temperatures will rise from an average of 17-20°C in mid April to 20-25 in May, around 25 in June and above 25 or 30 in mid summer. September is similar to June, whilst the temperatures really start to drop during the second half of October but Fall is often characterised by warm sunny days (though nights are cooler than in Summer).
Sunshine totals are much higher than in the UK or other neighboring countries (Switzerland, Germany). The sun’s strength means that you must protect yourself against the sun even on overcast days.