Blenheim's climate is characterized by mild winters and warm summers. The winter months of June, July, and August are cool with temperatures ranging from just below freezing to around 17°C, while spring brings a gradual warming trend. Autumn is pleasant, with temperatures averaging around 14-16°C, before the summer months of December, January, and February bring warmer days with highs often reaching into the mid-twenties. The warmest months are typically at either end of the year, with December and January experiencing similar conditions to each other, while April and May mark a cooler period towards the end of autumn. Overall, Blenheim's temperature fluctuations are relatively moderate, making it suitable for outdoor activities throughout the year.