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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Canada Edition Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
For Canadians planning a trip, Lisbon’s weather by month offers a mild Atlantic climate: warm, dry summers from June to September and cool, rainy winters from November to February, with spring and autumn providing the most comfortable balance of sunshine and moderate temperatures.
What is the weather like in Lisbon each month?
Lisbon sits on Portugal’s Atlantic coast, giving it a Mediterranean-influenced climate with ocean moderation. Summer months (June through August) see average highs near 28°C and very little rain, while winter (December to February) brings highs around 15°C and the bulk of the city’s annual rainfall. Spring and autumn are transitional, with pleasant temperatures in the high teens to low 20s Celsius and fewer crowds. For a detailed comparison, see our Lagos Portugal weather page for the Algarve’s sunnier profile.
How does Lisbon rainfall and sea temperature change by month?
Lisbon rainfall by month peaks in November and December, when Atlantic storms sweep in, while July and August are nearly rainless. Lisbon sea temperature by month ranges from a cool 15°C in February to a swimmable 20°C in September. For those who prefer Fahrenheit, lisbon weather by month fahrenheit shows summer highs around 82°F and winter lows near 50°F. The live forecast above will give you the current conditions for your travel dates.
What is the best month to visit Lisbon for good weather?
May and September offer the best balance: warm highs of 22–26°C, low rainfall, and plenty of sunshine. These months avoid the peak summer heat and crowds while still being pleasant for sightseeing.
Does Lisbon get cold in winter?
Winter in Lisbon is mild by Canadian standards. Daytime highs hover around 14–16°C, with overnight lows near 8°C. Rain is common, but snow is extremely rare. A light jacket and umbrella are sufficient.
How does Lisbon weather compare to Porto weather by month?
Lisbon is generally warmer and drier than Porto year-round. Porto weather by month shows more rainfall, especially in winter, and slightly cooler summer highs. Lisbon’s southern location gives it about 300 more hours of sunshine annually.