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Weather in Rjukan for September 2026

Your guide to Rjukan weather in September - trends and predictions

    Temperatures

  • Until now, September 2026 in Rjukan is slightly cooler than the historical average by 1.9 °C.

  • Expect cooler weather in the next days in Rjukan with the forecast suggesting a temperature of 10 °C, lower than the historical average.

  • In general, the average temperature in Rjukan at the beginning of September is 13.4 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 8.6 °C by the end of September.

    • Rain 🌧️

  • The climate of Rjukan in September is notably wet, with an average of 12 rainy days, and a total of 114.3 mm of precipitation.

Average dry days
18
Dry days
Average rainy days
12
Rainy days
Average snowy days
0
Snow days
Average temperatures
10°/4°
Temperatures
Average wind speed
14 km/h
Avg max wind
Average humidity
80 %
Avg humidity

Rjukan Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Sunny
14°
2
Sunny
12°
3
Overcast
11°
4
Patchy rain possible
12°
5
Light rain shower
14°
6
Overcast
15°
7
Patchy rain possible
16°
8
Sunny
14°
9
Light rain shower
14°
10
Partly cloudy
12°
11
Light rain shower
10°
12
Sunny
8°
13
Sunny
14°
14
Overcast
13°
15
Light drizzle
11°
16
Overcast
13°
17
Patchy rain possible
11°
18
Overcast
9°
19
Patchy rain possible
6°
20
Patchy rain possible
5°
21
Overcast
8°
22
Sunny
8°
23
Fog
11°
24
Mist
13°
25
Light rain shower
9°
26
Mist
9°
27
Heavy rain
9°
28
Overcast
8°
29
Patchy rain possible
6°
30
Patchy rain possible
6°

Temperatures trend during September in Rjukan

See the weather trend as well as the moving average line

September weather in Rjukan day by day

Click on a date for more information
August October
Date Weather Temperatures Rain Snow More
1 Sept. Sunny
Sunny
 14° /6° 5.4 mm 0 cm
2 Sept. Sunny
Sunny
 12° /5° 0.7 mm 0 cm
3 Sept. Overcast
Overcast
 11° /5° 8 mm 0 cm
4 Sept. Patchy rain possible
Patchy rain possible
 12° /6° 10.1 mm 0 cm
5 Sept. Light rain shower
Light rain shower
 14° /6° 5 mm 0 cm
6 Sept. Overcast
Overcast
 15° /5° 0.9 mm 0 cm
7 Sept. Patchy rain possible
Patchy rain possible
 16° /6° 1.5 mm 0 cm
8 Sept. Sunny
Sunny
 14° /6° 0.8 mm 0 cm
9 Sept. Light rain shower
Light rain shower
 14° /5° 0.9 mm 0 cm
10 Sept. Partly cloudy
Partly cloudy
 12° /4° 1.5 mm 0 cm
11 Sept. Light rain shower
Light rain shower
 10° /4° 5.3 mm 0.2 cm
12 Sept. Sunny
Sunny
 8° /0° 2.6 mm 0 cm
13 Sept. Sunny
Sunny
 14° /4° 0 mm 0 cm
14 Sept. Overcast
Overcast
 13° /3° 0 mm 0 cm
15 Sept. Light drizzle
Light drizzle
 11° /6° 11.2 mm 0 cm
16 Sept. Overcast
Overcast
 13° /4° 0.1 mm 0 cm
17 Sept. Patchy rain possible
Patchy rain possible
 11° /3° 0.4 mm 0 cm
18 Sept. Overcast
Overcast
 9° /2° 0 mm 0 cm
19 Sept. Patchy rain possible
Patchy rain possible
 6° /2° 7 mm 0 cm
20 Sept. Patchy rain possible
Patchy rain possible
 5° /2° 0.1 mm 0 cm
21 Sept. Overcast
Overcast
 8° /0° 0.1 mm 0 cm
22 Sept. Sunny
Sunny
 8° /-1° 0 mm 0 cm
23 Sept. Fog
Fog
 11° /0° 1 mm 0 cm
24 Sept. Mist
Mist
 13° /4° 0 mm 0 cm
25 Sept. Light rain shower
Light rain shower
 9° /5° 14 mm 0 cm
26 Sept. Mist
Mist
 9° /2° 0 mm 0 cm
27 Sept. Heavy rain
Heavy rain
 9° /2° 9.4 mm 0 cm
28 Sept. Overcast
Overcast
 8° /1° 0.8 mm 0 cm
29 Sept. Patchy rain possible
Patchy rain possible
 6° /0° 0.8 mm 0 cm
30 Sept. Patchy rain possible
Patchy rain possible
 6° /1° 0.9 mm 0 cm
Next
Important Notice
Our weather forecast for Rjukan in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Rjukan forecast closer to your planned date for the most up-to-date weather information.
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Rjukan in September - FAQ

What are the expected maximum and minimum temperatures in Rjukan during September?
Prepare for cooler days with highs just around 10° and colder nights, dipping below 4°.

How much rainfall should be expected in Rjukan during September?
Significant rainfall exceeding 114.3 mm is expected in Rjukan during September, occurring over more than 12 days. Preparing for wet conditions is recommended in your planning.

Will it snow in Rjukan in September 2026?
Rjukan typically sees 0.3 cm of snowfall during September.

What are the typical wind conditions in Rjukan during September?
The average wind speed in Rjukan during September is 14 km/h, suggesting breezy to windy conditions, depending on your activities.

Rjukan snow forecast September 2026

Track daily snowfall levels and discover Rjukan’s snowy potential this September ❄️

September rainfall patterns in Rjukan

Explore the daily rainfall trends and prepare for Rjukans September weather 💧
Typically, Rjukan has 12 rainy days in September with a total of 114.3 mm of rainfall.

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Location coordinates Where is Rjukan?

Get accurate weather forecasts for Rjukan, located at latitude 59.879 and longitude 8.594. Stay updated with localized weather information tailored for Rjukan.

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