NorwayAverage weather for Rjukan 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.
Start of September
The month of September starts in Rjukan 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.
Mid September
By mid-September, daytime temps drop to around 15°C, with nights around 6°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of September
By the end of September, the average daytime temperature in Rjukan is around 13°C, while nighttime temps are about 5°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 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.
Rjukan in September |
New York | ||
|---|---|---|---|
 Average temperature |
14°C | 27°C | |
 Max. temperature |
17°C | 31°C | |
| Min. temperature |
11°C | -5°C | |
 Total precipitation |
94 mm | 57 mm | |
| Rainy days |
13 days | 9 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
With 25°C in 2023, Rjukan reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 5°C in 2018. The extreme nighttime temperatures ranged from a lowest recorded value of -3°C to a highest value of 12°C.
Check out the climate of Rjukan for all months and discover the best travel time
Curious about the weather in other parts of Norway? Check out the climate and weather for spots like Oslo, Lofoten, Vesterålen, or explore other destinations in Norway.
Daily Temperature in September in Rjukan
This chart shows the average daily high and low temperatures in September for Rjukan, 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 Rjukan
The chart below shows the average daily precipitation in September for Rjukan, 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 13 days of precipitation in Rjukan.
Daily Snowfall in September in Rjukan
This chart shows the average daily snowfall in September in Rjukan, 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 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 few years.
Total precipitation in September in Rjukan over the years
This chart shows the average precipitation in September in Rjukan, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Snowfall in September in Rjukan per year
This chart shows the average snowfall in September in Rjukan, measured in centimeters, over the past few years.
Daily weather in September for Rjukan
Click on any day in September to get detailed info about the usual 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.
