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PortugalThe weather in September in Lisbon
It's warm in September in Lisbon with an average temperature of 27°C. Temperatures this month range from a low of 25°C to a high of 29°C. At night, you can expect temperatures between 17°C and 20°C.
Looking for great weather? September is a good time to be in Lisbon. The temperatures are nice, and there’s little chance of rain this month.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in September for Lisbon, Portugal. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 39°C in 2016, Lisbon reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 19°C in 2014. The extreme nighttime temperatures ranged from a lowest recorded value of 13°C to a highest value of 24°C.
Water temperature
The water temperature at Lisbon is 22°C this month. Pleasant for a swim.
Rainfall amount
In September, there is an average of 19 mm of precipitation, spread over 4 days. The wind speed is around 4 Bft, mostly coming from the West.
Daily weather in September for Lisbon
Click on any day in September to get detailed info about the usual weather on that day in Lisbon. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| Lisbon | New York | |
|---|---|---|
| Average temperature | 27°C | 27°C |
| Max. temperature | 29°C | 31°C |
| Min. temperature | 17°C | -5°C |
| Total precipitation | 19 mm | 57 mm |
| Rainy days | 4 days | 9 days |
Start of September
The month of September starts in Lisbon with hot temps, averaging around 29°C during the day and nights around 20°C.
Mid September
By mid-September, daytime temps drop to around 27°C, with nights around 19°C. Not much precipitation expected during this period. It’s mostly dry and sunny.
End of September
By the end of September, the average daytime temperature in Lisbon is around 27°C, while nighttime temps are about 18°C. There’s hardly any chance of precipitation. The weather will be mostly dry with plenty of sun.
Find affordable trips to Lisbon
UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Check out the climate of Lisbon for all months and discover the best travel time
Curious about the weather in other parts of Portugal? Check out the climate and weather for spots like Algarve, Albufeira, Madeira, or explore other destinations in Portugal.
Temperature charts
These charts show the average temperatures in September in Lisbon, Portugal. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in Lisbon
Temperature in September in Lisbon over the years
Precipitation charts
These charts show the average amount of precipitation in September in Lisbon, Portugal. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in September in Lisbon
Total precipitation in September in Lisbon over the years
Daily UV index in September in Lisbon
This chart shows the average daily UV index in September in Lisbon, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in September in Lisbon
The weather in September in Lisbon is rated an average of 0 out of 5 stars by 2 visitors. Have you been to Lisbon? Share your weather experience to help other visitors.
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Average weather in Lisbon by month
Click on a month below to see detailed weather info for Lisbon. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.