Lisbon climate

Name: Lisbon
Address: PT

Lisbon is warmest in August, with average highs of 27 °C, and coldest in January, when nights average 9.1 °C. November is the wettest month (84 mm) and July the driest (2.2 mm). Figures are 1991–2020 climate normals.

Across a full year Lisbon averages 558 mm of rain and 67 days above 25 °C.

Portugal · population 517,802 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month August 27 °C
Coldest month January 9.1 °C
Driest month July 2 mm
Wettest month November 84 mm
Least cloud July 23 % cloud
Hottest on record August 42 °C
Coldest on record January 1.5 °C
Warmest sea September 19 °C

What to expectLisbon through the year

Lisbon has a clear annual cycle: average daily highs run from 14 °C in January to 27 °C in August, a swing of 11 °C in mean temperature across the year.

Counted across a normal year, 67 days a year reach 25 °C, 14 of them reach 30 °C. The warmest reading in the 1991–2020 record is 42 °C, in August.

Rain is strongly seasonal. November averages 84 mm against 2 mm in July — 39 times as much. Planning around the dry months matters more here than planning around temperature.

The sea off Lisbon is warmest in September at 19 °C and coldest in February at 15 °C. Sea temperature lags the air by a month or two, which is why late summer swims warmer than early summer at the same air temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	13.6 °C	69 mm	52 %
February	14.4 °C	52 mm	50 %
March	16.7 °C	53 mm	50 %
April	18.1 °C	53 mm	49 %
May	20.8 °C	44 mm	44 %
June	23.9 °C	11 mm	34 %
July	26.0 °C	2 mm	23 %
August	26.6 °C	4 mm	25 %
September	24.7 °C	29 mm	35 %
October	21.2 °C	78 mm	50 %
November	16.9 °C	84 mm	52 %
December	14.5 °C	79 mm	56 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	13.6 °C	9.1 °C	11.3 °C	18.3 °C	1.5 °C	0	0
February	14.4 °C	9.2 °C	11.6 °C	22.0 °C	2.0 °C	0	0
March	16.7 °C	10.8 °C	13.5 °C	26.4 °C	2.2 °C	0	0
April	18.1 °C	12.2 °C	14.9 °C	27.8 °C	7.2 °C	1	0
May	20.8 °C	14.3 °C	17.3 °C	33.8 °C	9.1 °C	5	0
June	23.9 °C	16.6 °C	19.9 °C	39.0 °C	11.8 °C	10	2
July	26.0 °C	18.0 °C	21.5 °C	37.9 °C	14.8 °C	17	4
August	26.6 °C	18.7 °C	22.1 °C	41.5 °C	14.9 °C	19	5
September	24.7 °C	17.8 °C	20.8 °C	35.7 °C	12.1 °C	12	2
October	21.2 °C	15.7 °C	18.1 °C	32.8 °C	9.2 °C	4	0
November	16.9 °C	12.4 °C	14.5 °C	24.8 °C	4.8 °C	0	0
December	14.5 °C	10.1 °C	12.2 °C	19.8 °C	3.0 °C	0	0

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	69 mm	9	9.8 h/day	52 %	82 %	22 km/h	15.2 °C
February	52 mm	7	11 h/day	50 %	79 %	23 km/h	14.6 °C
March	53 mm	8	12 h/day	50 %	76 %	23 km/h	14.7 °C
April	53 mm	8	13 h/day	49 %	75 %	23 km/h	15.4 °C
May	44 mm	6	14 h/day	44 %	73 %	23 km/h	16.4 °C
June	11 mm	2	15 h/day	34 %	71 %	23 km/h	17.7 °C
July	2 mm	1	15 h/day	23 %	70 %	25 km/h	18.3 °C
August	4 mm	1	14 h/day	25 %	70 %	24 km/h	18.7 °C
September	29 mm	4	12 h/day	35 %	73 %	21 km/h	18.8 °C
October	78 mm	9	11 h/day	50 %	78 %	21 km/h	18.3 °C
November	84 mm	10	10 h/day	52 %	80 %	22 km/h	17.2 °C
December	79 mm	9	9.5 h/day	56 %	82 %	22 km/h	16.0 °C

Where Lisbon ranks

Ranking	Position	Value
The driest places in Europe in August	8th of 50	4.2 mm
The driest places in Europe in July	12th of 50	2.2 mm
The driest places in Europe in June	13th of 50	11 mm
Warmest sea temperatures in Europe in February	13th of 50	15 °C
Warmest sea temperatures in Europe in March	13th of 50	15 °C
Warmest sea temperatures in Europe in January	14th of 50	15 °C

Planning a trip? See the best time to visit Lisbon.

QuestionsCommon questions about Lisbon’s climate

When is the best time to visit Lisbon?

That depends on what you want, so the honest answer is a comparison rather than a single month. June, July, September sit closest to 20 °C on average, August is the warmest month and July the driest. The month-by-month table above has the full picture.

How hot does Lisbon get?

In August, the warmest month, daily highs average 27 °C. About 14 days a year pass 30 °C. The highest value in the 1991–2020 record is 42 °C.

How cold does it get in winter?

Nights average 9.1 °C in January, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Lisbon?

November, averaging 84 mm over 10 days with rain. The driest month is July with 2 mm. The year as a whole averages 558 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Lisbon rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Data point: 38.725°, -9.150° (the coordinates the reanalysis values are taken for)
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.