Weather in Lisbon

Planning your day or trip to Lisbon? In this section, you will find the most up-to-date weather information, including detailed forecasts and visual charts, to help you be ready for any whims of nature in the capital of Portugal.

The climate of Lisbon can be characterized as Mediterranean, with comfortable temperatures throughout most of the year. The city in Portugal enjoys a large number of sunny days, especially during the summer period. Winters here are mild, and summers are warm and predominantly dry, making it an attractive destination for tourists.

Seasons are clearly defined in Lisbon. Summer, especially in July and August, is very sunny and arid: the average temperature hovers around 21-22°C, and precipitation is practically absent, which is ideal for beach holidays and long walks. Winter (from December to February) is mild, with average temperatures around 12-13°C. During the winter months, as well as in spring (March-April) and autumn (October-November), the number of days with precipitation increases, although, according to the provided data, their total monthly amount remains small.

Spring and autumn in Lisbon are pleasant transitional periods. In spring, the temperature gradually rises, reaching a comfortable 17-18°C on average in May. In autumn, after the summer heat, the weather becomes cooler but remains warm enough for exploring the city. The driest months are July and August, while the highest number of days with precipitation falls on the spring and autumn-winter months.

The annual temperature trend in Lisbon is distinguished by its mildness and absence of extreme values. The hottest months are traditionally July and August, when the average air temperature reaches 21.5°C and 21.9°C respectively. The coolest month is considered January with an average temperature of about 12.0°C. Overall, the city's climate ensures comfortable conditions for visiting at practically any time of the year, offering pleasant weather for exploring its numerous beauties.

Summer months in Lisbon, especially July and August, are characterized by warmth and abundant sunshine. Daytime maximum temperatures during this period regularly rise to 25-26°C, creating ideal conditions for walks and relaxation. Nights bring pleasant coolness, with average minimum temperatures around 17.7-17.9°C. It is worth noting that summer sees more pronounced daily temperature fluctuations, reaching 7-8°C (the difference between the average maximum and average minimum temperature), which means a perceptible difference between daytime warmth and evening freshness. June is also very warm, with an average temperature of 19.6°C and maximum values around 22.9°C.

Winter in Lisbon passes mildly, without severe frosts or snow. In December, January, and February, average daytime temperatures range from 14.5°C (in January) to 15.8°C (in February), and nighttime minimum temperatures range from 9.5°C in January to 10.9°C in December. This ensures quite comfortable conditions for sightseeing even during the winter period. Daily temperature variations in winter are less significant than in summer, averaging 4.7-5.6°C, which makes the weather more stable throughout the day.

In Lisbon, there is a fairly clear division into a dry and a wetter season, although the total amount of precipitation in the city remains moderate throughout the year. The nature of precipitation is predominantly rain, as snow is an extremely rare phenomenon for Lisbon, not reflected in statistical averages.

Summer months, especially July and August, are the driest of the year. During this period, according to data, no precipitation falls at all (0 mm), and the number of rainy days is zero. June is also very dry, with zero precipitation, although it may count about 5 days when insignificant, barely noticeable precipitation is possible. May and September are also characterized by a low amount of precipitation (only 1 mm) and a small number of rainy days (3-4 days), making them predominantly sunny.

The highest probability of precipitation falls on the period from late autumn to early spring. The "wettest" months by the number of rainy days are April (about 11 days), as well as March and November (10 days each). They are followed by October and December (9 days each), as well as January (7 days) and February (6 days). It is important to note that even in these months, the average monthly rainfall is low and amounts to only 1-2 mm. This suggests that rains in Lisbon are usually not heavy or prolonged; rather, it is a light drizzle or short-term showers.

When packing for Lisbon, first and foremost take care of comfortable shoes – the city is famous for its hills and cobblestone streets, so foot comfort is paramount. Regardless of the season, it is an excellent idea to bring clothes that are easy to combine using the principle of layering. This will allow you to adapt to weather changes throughout the day, especially considering the possible wind from the Atlantic. A light windbreaker or cardigan will come in handy even on summer evenings when the temperature may drop.

For a trip to Lisbon in the warm season, roughly from May to September, when average temperatures range from 17.8°C to 21.9°C and precipitation is minimal (especially in July and August, when there is practically none), your wardrobe should consist of light and breathable clothing: t-shirts, shorts, sundresses, skirts. Do not forget sunscreen, a hat, and sunglasses, as the sun in Portugal can be very active. Even with almost zero rainfall in June, May, and September, a light cover-up for the evening will not hurt, as minimum temperatures can drop to 14.5-17.3°C.

In cooler months, from October to April, when average temperatures vary from 12.0°C to 18.9°C, and the number of days with precipitation increases (although the total amount of rainfall remains small, about 1-2 mm per month), it is worth bringing warmer clothing. Think about sweaters, a fleece jacket, jeans or thick trousers, as well as a light jacket or raincoat, preferably waterproof. A compact umbrella will also be useful, especially in the period from March to April and from October to November, when the number of rainy days reaches 9-11 per month. A scarf can add comfort on windy days, especially in winter, when the minimum temperature can be around 9.5°C.