San Baudilio de Llobregat's winters are chilly and unpredictable, with temperatures fluctuating between freezing and mild. Spring brings gradual warming, with temperatures steadily rising throughout March, April, and May. Summer is warm to hot, with highs often reaching the mid-30s Celsius in June and July, while August sees similar conditions. Autumn cools down rapidly, with September being the only month above 20°C on average. Winters return with a mix of frosty mornings and mild afternoons by November and December.