Normal weather for Aosta in September
It's cool to moderate in September in Aosta with an average temperature of 15°C. Temperatures this month range from a low of 12°C to a high of 17°C. At night, you can expect temperatures between 4°C and 8°C.
In September, there is an average of 53 mm of precipitation, spread over 9 days. Of the total precipitation, about 1,0 cm falls as snow in September. The wind speed is around 3 Bft, mostly coming from the South.
Aosta in September |
New York | ||
|---|---|---|---|
 Average Temperature |
15°C | 27°C | |
 High Temp |
17°C | 31°C | |
| Low Temp |
12°C | 21°C | |
 Total Precipitation |
53 mm | 57 mm | |
| Rainy Days |
9 days | 9 days | |
 Total Snowfall |
1,0 cm | 0 cm | |
| Snowy Days |
1 day | 0 days | |
Start of September
The month of September starts in Aosta with cool temps, averaging around 16°C during the day and nights around 7°C. A few showers might pop up early in the month, but overall, it’ll stay mostly sunny and dry.
With the temperature difference between day and night, it’s smart to wear layers. During the day, choose a light jacket, sweater or hoodie, and long pants. In the evening and morning, go for a warm jacket, sweater or hoodie, and long pants.
Mid September
By mid-September, daytime temps drop to around 15°C, with nights around 7°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
Since it cools down at night, it’s a good idea to wear layers. During the day, choose a light jacket, sweater or hoodie, and long pants. For the evening and morning, we recommend a thick jacket, sweater, and long pants.
End of September
By the end of September, the average daytime temperature in Aosta is around 14°C, while nighttime temps are about 5°C. A shower might pop up, but overall, the weather will be dry and sunny.
Because temperatures drop in the evening, wearing layers is recommended. During the day, choose a light jacket, sweater or hoodie, and long pants. For the evening and morning, we recommend a thick jacket, sweater, and long pants.
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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 Aosta?
Looking for sun and warm weather? September isn’t a good month to be in Aosta. The temperatures are too low for a warm stay this month.
Check out the climate of Aosta for all months and discover the best travel time
Curious about the weather in other parts of Italy? Check out the climate and weather for spots like Tuscany, Sicily, Lake Garda, or explore other destinations in Italy.
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Daily Temperature in September in Aosta
This chart shows the average daily high and low temperatures in September for Aosta, 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 Aosta
The chart below shows the average daily precipitation in September for Aosta, 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 9 days of precipitation in Aosta.
Daily Snowfall in September in Aosta
This chart shows the average daily snowfall in September in Aosta, measured in centimeters. The bottom of the chart shows the days of the month. The data is based on historical measurements and gives an idea of the average snowfall in September.
Daily UV Index in September in Aosta
This chart shows the average daily UV index in September in Aosta, 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 Aosta Over the Years
This chart shows the average temperature in September in Aosta, measured in degrees Celsius, over the past few years.
Total Precipitation in September in Aosta Over the Years
This chart shows the average precipitation in September in Aosta, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Snowfall in September in Aosta per year
This chart shows the average snowfall in September in Aosta, measured in centimeters, over the past few years.
Daily Climate in September for Aosta
Click on any day in September to get detailed info about the usual weather on that day in Aosta. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Aosta
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Average Weather in Aosta by Month
Click on a month below to see detailed weather info for Aosta. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
