Pessac's winters are mild, with temperatures rarely dipping below freezing, and occasional warmer spells, averaging around 7-11°C in January and December. Spring brings a steady rise in temperature, with April and May being the warmest months so far, averaging 13-15°C. Summer is hot, but not extreme, with July and August often seeing highs of up to 34°C, albeit with some cooler days. Autumn is similar to spring, with temperatures gradually decreasing as winter approaches again.