Normal weather for Lisbon in September
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.
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.
Lisbon in September |
New York | ||
|---|---|---|---|
 Average Temperature |
27°C | 27°C | |
 High Temp |
29°C | 31°C | |
| Low Temp |
25°C | 21°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. There’s little chance of precipitation. The weather’s mostly sunny and dry.
With the temperature difference between day and night, it’s smart to wear layers. For the daytime, light clothing like shorts or a dress, and a hat and sunglasses are perfect. In the evening and morning, a T-shirt, light pants or skirt, and a light jacket are ideal.
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.
Since it cools down at night, it’s a good idea to wear layers. For the daytime, light clothing like shorts or a dress, and a hat and sunglasses are perfect. For the evening and morning, a shirt, maybe a light sweater, and thin pants are recommended.
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.
Because temperatures drop in the evening, wearing layers is recommended. For the daytime, light clothing like shorts or a dress, and a hat and sunglasses are perfect. For the evening and morning, a shirt, maybe a light sweater, and thin pants are recommended.
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Water temperature
The water temperature at Lisbon is 22°C this month. Pleasant for a swim.
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.
Is September a good time to visit Lisbon?
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.
Temperature records for Lisbon in September
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.
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Daily Temperature in September in Lisbon
This chart shows the average daily high and low temperatures in September for Lisbon, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in September in Lisbon
The chart below shows the average daily precipitation in September for Lisbon, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for September, you can expect about 4 days of precipitation in Lisbon.
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.
Temperature in September in Lisbon Over the Years
This chart shows the average temperature in September in Lisbon, measured in degrees Celsius, over the past few years.
Total Precipitation in September in Lisbon Over the Years
This chart shows the average precipitation in September in Lisbon, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily Climate 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.
Weather experiences in September in Lisbon
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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.
