SloveniaAverage weather for Idrija in September
It's warm in September in Idrija with an average temperature of 23°C. Temperatures this month range from a low of 18°C to a high of 26°C. At night, you can expect temperatures between 9°C and 15°C.
Start of September
The month of September starts in Idrija with warm temps, averaging around 25°C during the day and nights around 14°C. You can expect regular precipitation, but there will also be some sunny days in the early part of the month.
Mid September
By mid-September, daytime temps drop to around 24°C, with nights around 14°C. There’s a high chance of precipitation during this time.
End of September
By the end of September, the average daytime temperature in Idrija is around 20°C, while nighttime temps are about 11°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
In September, there is an average of 156 mm of precipitation, spread over 12 days. The wind speed is around 3 Bft, mostly coming from the Southeast.
Idrija in September |
New York | ||
|---|---|---|---|
 Average temperature |
23°C | 27°C | |
 Max. temperature |
26°C | 31°C | |
| Min. temperature |
18°C | -5°C | |
 Total precipitation |
156 mm | 57 mm | |
| Rainy days |
12 days | 9 days | |
August
UV index
The UV index is a maximum of 7 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Is September a good time to visit Idrija?
Looking for sun? September isn’t a good month to be in Idrija. The temperature is nice, but there’s too much chance of rain.
Temperature records
With 30°C in 2015, Idrija reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 11°C in 2020. The extreme nighttime temperatures ranged from a lowest recorded value of 2°C to a highest value of 19°C.
Check out the climate of Idrija for all months and discover the best travel time
Curious about the weather in other parts of Slovenia? Check out the climate and weather for spots like Ljubljana, Bled, Bohinj, or explore other destinations in Slovenia.
Daily Temperature in September in Idrija
This chart shows the average daily high and low temperatures in September for Idrija, 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 Idrija
The chart below shows the average daily precipitation in September for Idrija, 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 12 days of precipitation in Idrija.
Daily UV index in September in Idrija
This chart shows the average daily UV index in September in Idrija, 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 Idrija over the years
This chart shows the average temperature in September in Idrija, measured in degrees Celsius, over the past few years.
Total precipitation in September in Idrija over the years
This chart shows the average precipitation in September in Idrija, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in September for Idrija
Click on any day in September to get detailed info about the usual weather on that day in Idrija. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Idrija
Have you been to Idrija in September?
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Average weather in Idrija by month
Click on a month below to see detailed weather info for Idrija. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
