Average temperatures, rainfall and packing tips for Lisbon, Portugal in December
December in Lisbon is typically mild, with average daytime highs around 16°C and nights near 9°C. It is usually the coldest month of the year in Lisbon.
Rainfall is light in December: roughly 9 mm across the whole month.
If your dates are flexible, the most comfortable months in Lisbon are usually February, March, April, May, June, July, August, September, October and November.
← Lisbon weather tomorrow (live)
In December, Lisbon averages a daytime high of about 16°C and a night-time low of around 9°C, based on recent historical data. That makes it the coldest month of the year there.
Rainfall is light in December: roughly 9 mm across the whole month.
December is a workable time to visit Lisbon, with mild days - just pack accordingly. If your dates are flexible, the most comfortable months in Lisbon are usually February, March, April, May, June, July, August, September, October and November.