Portici's winters are typically mild, with temperatures rarely dropping below 0°C and averaging around 9-11°C in January and February. Spring brings gradual warming, with temperatures rising steadily from March to May, eventually reaching averages of 18°C by May. Summer is warm and dry, with highs often above 30°C, but not excessively hot, peaking at an average of 27°C in July and August. Autumn is generally mild, with temperatures dropping gradually from September to November, returning to winter-like conditions by December.