Winters in Brunoy, France are cool and somewhat unpredictable, with temperatures fluctuating between freezing and mild days. January is the coldest month on average, with an average temperature of 4°C, while February's averages are slightly higher at 7°C. As spring approaches, March and April bring increasingly warmer temperatures, with April being particularly pleasant, averaging around 8°C. Summer months from June to August are warm and sunny, with July and August being the hottest, but not excessively so, with average highs of around 19-20°C. Autumn brings a return to cooler temperatures, similar to those experienced in winter, with November and December averaging around 6°C.