Weather in Lisbon - 7-day forecast, rain, wind

Weather in Lisbon today and 7-day forecast

Portugal. Live weather data from Open-Meteo. Updated on page load.

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Climate in Lisbon

Lisbon enjoys an Atlantic-influenced Mediterranean climate, with hot, dry summers (average highs of 28 degrees Celsius) and mild, wet winters (average lows of 8 degrees). It is one of the sunniest European capitals.

Annual rainfall is around 720 mm, concentrated between November and March. Atlantic depressions can deliver significant rain in a few days, while summer is practically dry.

The nortada, a northerly wind blowing in summer afternoons, refreshes the city and favours surf at Cascais and Costa da Caparica. Proximity to the Tagus estuary moderates humidity.

Best time to visit is spring (April-May) and autumn (September-October). Use the hourly forecast, UV index and sea temperature before planning the Belem Tower, Alfama or a trip to Sintra.

The climate of Lisbon, with thirty years of data

Lisbon has the most Atlantic Mediterranean climate there is: dry, sunny summers, as you would expect, but tempered by the nortada, the northerly that blows along the Portuguese coast and takes the edge off the heat. Winter concentrates almost all the year’s rain into Atlantic frontal episodes, and frost is exceptional thanks to the ocean and the Tagus estuary.

The year at a glance

The warmest month is August, with a mean maximum of 26.7 °C, and the coldest January, with minima averaging 9.7 °C. About 563 mm fall a year, spread over 82 days of appreciable rain, peaking in December and at its lowest in July. There are 0 days of frost a year and 13 with the maximum above 30 °C.

Month by month

Monthly means over 30 years at Lisbon. ERA5-Land reanalysis, 1995 to 2024.
Monthly mean	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Maximum (°C)	13.9	14.8	16.8	18.5	21.1	24.0	26.1	26.7	24.8	21.7	17.3	14.8
Minimum (°C)	9.7	9.9	11.2	12.8	14.8	17.1	18.3	18.9	18.3	16.4	13.0	10.7
Rain (mm)	65	51	58	54	40	14	4	5	33	77	80	83
Rain days	9.3	7.6	8.8	9.8	6.4	3.2	1.1	1.3	5.0	9.4	10.4	9.8

The extremes of the series

Across these 30 years the highest temperature was 39.5 °C, on 4 August 2018, and the lowest 2.3 °C, on 8 January 2009. These are reanalysis values, not those of an observatory: they are useful for placing the magnitude, not as an official record.

Where these numbers come from

From ERA5-Land, the reanalysis produced by the European Centre for Medium-Range Weather Forecasts, downloaded from the Copernicus Climate Data Store under a CC-BY licence: hourly temperature and precipitation between 1995-01-01 and 2024-12-06, 30 complete years, in the 38.70°, -9.10° cell. It is a grid of about 9 km covering land only.

The Spanish cities on this site use AEMET’s official normals; there is no single equivalent for ten different countries, so the same global series is used for all of them. That has an advantage: the figures are comparable with one another, computed by the same method over the same period. And a limitation: a reanalysis cannot see the urban heat island, so in the centre of a large city the real minima are usually somewhat higher than those in the table.