Temperatures in September
It's warm in September in Terni with an average temperature of 25°C. Temperatures this month range from a low of 22°C to a high of 27°C. At night, you can expect temperatures between 12°C and 17°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Terni in September. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of September
The month of September starts in Terni with hot temperatures, averaging around 27°C during the day and nights close to 15°C. A few showers might pop up in the first days of the month, but the weather remains mostly sunny and dry.
Since temperatures can differ between day and night, it’s a good idea to dress in layers.
Mid-September
By mid-September, the average daytime temperature drops to around 26°C, with nights close to 15°C. There might be a few showers during this period, but plenty of dry days with sunshine too.
Temperatures vary between day and night, so it’s smart to wear layers.
End of September
By the end of September, the average daytime temperature in Terni will be around 23°C, with nights close to 13°C. A shower might show up, but overall the weather will be dry and sunny.
Precipitation in September
In September, there is an average of 74 mm of precipitation, spread over 7 days. The wind speed is around 4 Bft, mostly coming from the South.
The average precipitation chance is 25% per day this month. Though it seems pretty low, the weather’s variable. Some days have higher and others lower precipitation chances, which lowers the average.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in September for Terni. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Terni in September |
London | ||
|---|---|---|---|
 Average Temperature |
25°C | 20°C | |
 High Temp |
27°C | 22°C | |
| Low Temp |
22°C | 17°C | |
 Total Precipitation |
74 mm | 44 mm | |
| Rainy Days |
7 days | 8 days | |
August
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 Terni?
Want nice weather? Then September is a great time to be in Terni. You’ll have pleasant temperatures and not too much rain this month.
Temperature records for Terni in September
With 33°C, Terni hit the highest temperature in the last 10 years in September 2022. The lowest daytime temperature in this month was 11°C in 2020. The extreme night temperatures ranged from a low of 5°C to a high of 23°C.
Check out the climate of Terni for all months and discover the best travel time
Curious about the climate in other parts of Italy? Check out the weather and climate in places like Tuscany, Sicily, Lake Garda, or have a look at other destinations in Italy.
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Daily Temperature in September in Terni
This chart shows the average daily temperatures, both day and night, for each day in September in Terni, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in September in Terni
The chart below shows the average daily precipitation in September for Terni, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown 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 rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for September, you can expect around 7 days of rain in Terni.
Daily UV Index in September in Terni
This chart shows the average daily UV index in September in Terni, 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 Terni Over the Years
This chart shows the average temperature in September in Terni, measured in degrees Celsius, over the past years.
Total Precipitation in September in Terni Over the Years
This chart shows the average precipitation in September in Terni, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in September for Terni
Click on a specific day in September for detailed info on the typical weather on that day in Terni. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Terni
Have you been to Terni in September?
Share your weather experience in September in Terni.
Average Weather in Terni by Month
Click on a month below to see detailed weather info for Terni. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
