Portugal weather in January
In January, Portugal averages 15 to 19°C by day across Madeira, the Algarve and Lisbon. Madeira is the warmest at 19°C, Lisbon the coolest at 15°C. The sea is 15 to 20°C.
Portugal in January, place by place
Warmest first. Nowhere here averages 24°C this month. Tap a place for its full January detail.
Heading to Portugal in January?
Share the places you've saved on TikTok and Instagram for Portugal to Dream Trip. It pins them on a map and builds your days around them.
Portugal in January: quick answers
Is Portugal hot in January?
In January, Portugal averages 15 to 19°C by day across Madeira, the Algarve and Lisbon. Madeira is the warmest at 19°C, Lisbon the coolest at 15°C. The sea is 15 to 20°C. January is mild in Madeira: good for exploring, not reliably beach weather.
Where is warmest in Portugal in January?
Madeira, at an average high of 19°C. The driest is Algarve, with about 57 mm of rain.
Can you swim in the sea in Portugal in January?
Portugal's sea averages below 21°C in January, so most people will find it chilly.
How we measured this
Portugal here means Madeira, the Algarve and Lisbon: the places we measure. Figures are averages of every day from 2016 to 2025 from the Open-Meteo historical weather archive (ECMWF ERA5); sea temperatures are 2023 to 2025 averages. Rain is the average monthly total, and 150 mm or more counts as rainy season.
Planning Portugal in January?
Save the places you find on TikTok and Instagram for Portugal to one map, and Dream Trip turns them into a day-by-day plan.
