Estoril's winters are cool and mild, with temperatures ranging from just above freezing in January to a moderate average of around 10°C. Spring brings gradual warming, with March marking the beginning of a steady rise towards pleasant highs, often reaching into the mid-20s by April and May. Summer is warm and sunny, with July and August experiencing the highest temperatures, occasionally soaring above 38°C, but still maintaining an average temperature that's not excessively hot. Autumn brings a return to more moderate temperatures, with September and October enjoying pleasant weather before cooling down in November and December, which are similar to winter months in terms of coolness. The overall climate is mild and temperate, ideal for outdoor activities year-round.