Our weather and climate analysis offers a detailed understanding of average weather patterns for locations across the globe. Derived from 26 years of historical simulated weather data from ECMWF, it provides valuable insights into typical weather conditions, including air temperature, humidity, precipitation, cloud cover and wind. It is important to note the data is not observational, but rather derived from climate reanalysis.
Our database was last updated in January 2026, and current weather and climate guides are derived from an hourly dataset spanning 26 years (2000 to 2025). Our database contain modified Copernicus Climate Change Service information for these years. Refer to our Terms for full acknowledgements and disclaimers.
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Discover if upcoming months are expected to be warmer, colder, wetter, or drier than average
What is the best time to visit Lisbon to enjoy the optimal weather conditions?
This quick reference weather table contains a summary of the annual climate trends in Lisbon. It contains key metrics, including average monthly high & low temperatures, rainfall, humidity and UV index. The data is presented on a monthly basis, allowing you to see how each these weather components change throughout the year.
Explore the most extreme weather events in Lisbon over the past 26 years, including records highs and lows for temperatures, rainfall and wind speeds. This data is sourced from the latest ERA5 reanalysis model spanning 2000-2025.
Explore weather patterns in areas close to Lisbon, Portugal
Explore places with similar climates and weather patterns to Lisbon, Portugal
Lisbon features a coastal climate defined by warm, dry summers and wet winters, offering a temperate environment year-round. WeatherBox data shows that extreme heat is relatively uncommon, with the average daily high in the warmest month reaching 24.5°C (76.1°F). Even during significant heat events, temperatures rarely exceed 28.0°C (82.4°F). Conversely, the city avoids severe cold, as the average daily low in the coldest month settles at 9.9°C (49.8°F). It rarely freezes, with thermometer readings seldom falling below 6.5°C (43.7°F), resulting in a moderate annual temperature variance of 9°C (16.2°F).
Precipitation patterns reveal a stark contrast between seasons. The rainy season is most intense in late autumn, where the wettest month sees an average accumulation of 89 mm (4 in). This shifts dramatically during the arid summer months, as rainfall drops to a negligible 3 mm (0 in) in the driest month. Cloud cover follows this trend; while the winter months receive approximately 142.8 of sunshine, the summer brings abundant clear skies and 363.1 of sunlight. During these bright periods, the average peak UV Index is 8.8.
Atmospheric circulation and humidity play significant roles in the local comfort levels. Prevailing winds typically blow from the NNW, with average speeds topping out at 19.7 km/h (12.2 mph) in the windiest month. Gusts are generally moderate, as wind speeds rarely exceed 36.0 km/h (22.3 mph). Relative humidity fluctuates from a damp 81.5 in the wet season to a drier 74.8 when precipitation is scarce. Explore advanced weather charts on the WeatherBox website.
