Temperatures in September
It's cool in September in Rjukan with an average temperature of 14°C. Temperatures this month range from a low of 11°C to a high of 17°C. At night, you can expect temperatures between 4°C and 8°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Rjukan 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 Rjukan with cool temperatures, averaging around 16°C during the day and nights close to 7°C. A few showers might pop up in the first days of the month, but the weather remains mostly sunny and dry.
Mid-September
By mid-September, the average daytime temperature drops to around 15°C, with nights close to 6°C. There might be a few showers during this period, but plenty of dry days with sunshine too.
End of September
By the end of September, the average daytime temperature in Rjukan will be around 13°C, with nights close to 5°C. There’s regular precipitation, but with a bit of luck, you’ll also get some dry and sunny days.
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Precipitation in September
In September, there is an average of 94 mm of precipitation, spread over 13 days. Of the total precipitation, about 0,3 cm falls as snow in September. The wind speed is around 3 Bft, mostly coming from the South.
The average precipitation chance is 44% per day this month. 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 Rjukan. 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.
Rjukan in September |
London | ||
|---|---|---|---|
 Average Temperature |
14°C | 20°C | |
 High Temp |
17°C | 22°C | |
| Low Temp |
11°C | 17°C | |
 Total Precipitation |
94 mm | 44 mm | |
| Rainy Days |
13 days | 8 days | |
 Total Snowfall |
0,3 cm | 0 cm | |
| Snowy Days |
1 day | 0 days | |
August
UV index
The UV index is a maximum of 6 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.
Temperature records for Rjukan in September
With 25°C, Rjukan hit the highest temperature in the last 10 years in September 2023. The lowest daytime temperature in this month was 5°C in 2018. The extreme night temperatures ranged from a low of -3°C to a high of 12°C.
Check out the climate of Rjukan for all months and discover the best travel time
Curious about the climate in other parts of Norway? Check out the weather and climate in places like Oslo, Lofoten, Vesterålen, or have a look at other destinations in Norway.
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Daily Temperature in September in Rjukan
This chart shows the average daily temperatures, both day and night, for each day in September in Rjukan, 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 Rjukan
The chart below shows the average daily precipitation in September for Rjukan, 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 13 days of rain in Rjukan.
Daily Snowfall in September in Rjukan
This chart shows the average daily snowfall in September in Rjukan, measured in centimetres. 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 Rjukan
This chart shows the average daily UV index in September in Rjukan, 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 Rjukan Over the Years
This chart shows the average temperature in September in Rjukan, measured in degrees Celsius, over the past years.
Total Precipitation in September in Rjukan Over the Years
This chart shows the average precipitation in September in Rjukan, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Snowfall in September in Rjukan per year
This chart shows the average snowfall in September in Rjukan, measured in centimetres, over the past years.
Daily climate in September for Rjukan
Click on a specific day in September for detailed info on the typical weather on that day in Rjukan. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Rjukan
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Average Weather in Rjukan by Month
Click on a month below to see detailed weather info for Rjukan. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
