Is Lisbon hot in September?
Days are typically warm at 26.2°C, while nights average 17.7°C.
Portugal · 1991–2020 normal
Lisbon in
September.
Typical September weather in Lisbon: 26.2°C by day, 17.7°C at night, 36 mm of rain over 3.9 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high26.2°C
Typical low17.7°C
Rain36 mm
Wet days3.9
In the year-round weather comparison, September scores 87 out of 100 (June leads the year at 91). Daylight is calculated as 12 h 23 from latitude 38.73°. Open-water sea temperature is 18.8°C (23 km from the place centre).
September at a glance
What is Lisbon like in September?
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 36 mm across about 4 wet days.
How much daylight is there?
There are about 12 h 23 between sunrise and sunset at mid-month, calculated from the place latitude.
Is September a good time to visit?
September ranks 3 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.
How travel partnerships will work