Is Lisbon hot in August?
Days are typically warm at 28.3°C, while nights average 18.9°C.
Portugal · 1991–2020 normal
Lisbon in
August.
Typical August weather in Lisbon: 28.3°C by day, 18.9°C at night, 7 mm of rain over 1.3 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high28.3°C
Typical low18.9°C
Rain7 mm
Wet days1.3
In the year-round weather comparison, August scores 79 out of 100 (June leads the year at 91). Daylight is calculated as 13 h 40 from latitude 38.73°. Open-water sea temperature is 18.7°C (23 km from the place centre).
August at a glance
What is Lisbon like in August?
Plain answers from the measured climate record—not a forecast or a promise about a particular trip.
Does it rain much?
The measured monthly average is 7 mm across about 1 wet days.
How much daylight is there?
There are about 13 h 40 between sunrise and sunset at mid-month, calculated from the place latitude.
Is August a good time to visit?
August ranks 5 of 12 in our weather comparison; June ranks first.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 2267057
- NOAA station
- PO000008535 · LISBOA GEOFISICA
- Station distance
- 0.9 km from the place centre
- Coverage
- Strong coverage · 29 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.
Next step
Choose your month.
Then plan the details.
The weather comparison for Lisbon is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.
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