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Climate · Lisbon

Lisbon in August

Warm and dry, as the days shorten.

Typical weather, averaged over 30 years

August in Lisbon is warm: highs near 83°F, lows near 66°F. Rain is rare, and the days shorten by 1 hour 4 minutes from the first week to the last.August in Lisbon is warm: highs near 28°C, lows near 19°C. Rain is rare, and the days shorten by 1 hour 4 minutes from the first week to the last.

High
83°F28°Caverage
Low
66°F19°Caverage
Wet days
0a week · 4% of days
Daylight
13h 37mon average

Is August a good time to visit Lisbon?

A good month, just outside Lisbon's best months, which run in two parts: May to July, or September.

How we judge it: every month is scored on how close its typical high comes to the range from 70°F to 80°F, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.How we judge it: every month is scored on how close its typical high comes to the range from 21°C to 27°C, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.

How August sits in the year

week by week

Temperature

Highs near 83°F in August, against 60°F to 83°F through the year.Highs near 28°C in August, against 16°C to 28°C through the year.

Chance of a wet day

4% of days in August, against 4% to 35% through the year.

Cloud cover

18% cover in August, against 14% to 54% through the year.

Daylight

13h 37m in August, against 9h 30m to 14h 50m through the year.

Week by week, lightly smoothed, with August shaded. The olive line marks the best months. Hover or tap a week for its figures.

Either side

  1. July82°28°low 65°low 18°no wet daysRain on fewer than one day a week.
  2. August83°28°low 66°low 19°no wet daysRain on fewer than one day a week.
  3. September80°27°low 65°low 18°1 wet day a weekRain on about one day a week.

Where Lisbon sits, in August

Europe/Lisbon
this place
typical high in August 40°F4°C95°F35°C
Sunrise, mid-August
6:50 AMsets 8:33 PM
Above the sea
0 mlow-lying
Latitude
38.7°Nnorthern hemisphere
Nearest of ours
Melides72 km south-east

The land around Lisbon, shaded by its typical high in August, the planning map's own layer. Hover the map for the figure at that spot; tap it on a phone. Clock times are local, for the 15th.

Elsewhere in Portugal in August

high · low · wet days
See August on the planning mapThe whole year in Lisbon

Typical weather, averaged over 30 years (1995–2024), from the 11 km grid square nearest Lisbon. Temperatures are adjusted against 66 weather stations: daytime highs read about 3.1°F cold in the source data and are raised to match.Temperatures are adjusted against 66 weather stations: daytime highs read about 1.7°C cold in the source data and are raised to match. Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not. Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.

Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not.

Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.