Monthly Climate
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Best time to visit Lisbon

June is the best time to visit Lisbon for general sightseeing, with average highs of 24 °C and about 2 wet days. The comfortable season runs roughly April to October.

It depends what you are going for

One month rarely wins on everything. These are the best months on each measure taken on its own.

If you want Best month On that measure
Sightseeing and walking June comfort 91/100
A beach holiday August sea 19 °C
The least cloud July 23 % average cloud cover
The least rain July 2 mm
Warmth August 27 °C
Cooler weather January 14 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days Beach
1 June 91 24 °C 2 72
2 May 90 21 °C 6 51
3 September 90 25 °C 4 77
4 October 86 21 °C 9 53
5 July 85 26 °C 1 80
6 August 83 27 °C 1 82
7 April 81 18 °C 8 34
8 March 76 17 °C 8 27
9 November 74 17 °C 10 32
10 February 67 14 °C 7 20
11 December 66 14 °C 9 21
12 January 63 14 °C 9 17

For a beach holiday

August scores highest, with a sea temperature of 19 °C and air temperatures around 27 °C. The sea never reaches 20 °C here.

Month Sea Air Sunshine Beach score
January 15 °C 14 °C 52 % 17
February 15 °C 14 °C 50 % 20
March 15 °C 17 °C 50 % 27
April 15 °C 18 °C 49 % 34
May 16 °C 21 °C 44 % 51
June 18 °C 24 °C 34 % 72
July 18 °C 26 °C 23 % 80
August 19 °C 27 °C 25 % 82
September 19 °C 25 °C 35 % 77
October 18 °C 21 °C 50 % 53
November 17 °C 17 °C 52 % 32
December 16 °C 14 °C 56 % 21

When to think twice

January scores lowest with about 9 wet days and highs near 14 °C. That does not make it a bad month — it depends entirely on what you are travelling for. The numbers are all here; the judgement is yours.

The full year

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 %

Data sources and method

Normal period
1991–2020
Dataset version
era5-1991-2020-scores1.1
Last processed

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: comfort score, beach score, season boundaries. 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.