Is Lisbon hot in December?
Days are typically cool at 15.2°C, while nights average 9.6°C.
Portugal · 1991–2020 normal
Typical December weather in Lisbon: 15.2°C by day, 9.6°C at night, 108 mm of rain over 9.7 wet days. These are measured 1991–2020 station normals, not a forecast.
In the year-round weather comparison, December scores 45 out of 100 (June leads the year at 91). Daylight is calculated as 9 h 28 from latitude 38.73°. Open-water sea temperature is 16.0°C (23 km from the place centre).
December at a glance
Plain answers from the measured climate record—not a forecast or a promise about a particular trip.
Days are typically cool at 15.2°C, while nights average 9.6°C.
The measured monthly average is 108 mm across about 10 wet days.
There are about 9 h 28 between sunrise and sunset at mid-month, calculated from the place latitude.
December ranks 11 of 12 in our weather comparison; June ranks first.
The evidence behind this page
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The weather comparison for Lisbon is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.
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