Tinn (Rjukan)
September
Weather in Tinn for September 2025
Your guide to Tinn weather in September - trends and predictions
Snowfall in Tinn during September is quite rare, with fewer than 2 snowy days on average.
In general, the average temperature in Tinn at the beginning of September is 15 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 7.6 °C by the end of September.
The climate of Tinn in September is notably wet, with an average of 15 rainy days, and a total of 112.3 mm of precipitation.
Snow Forecast ❄️
Temperatures
Rain 🌧️
14
Dry days
15
Rainy days
1
Snow days
11°/4°
Temperatures
14 km/h
Avg max wind
79 %
Avg humidity
Tinn in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  16° | 2  14° | 3 10° | 4  13° | 5 17° | 6 17° | 7 18° |
| 8 16° | 9  16° | 10 13° | 11  9° | 12 9° | 13 8° | 14  8° |
| 15 10° | 16  8° | 17 11° | 18  10° | 19 12° | 20 11° | 21 13° |
| 22 12° | 23 10° | 24 8° | 25 9° | 26 8° | 27  8° | 28 7° |
| 29 6° | 30 7° |
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Temperatures trend during September in Tinn
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| 1 Sept. | Overcast | 16° /5° | 0.1 mm | 0 cm | |
| 2 Sept. | Sunny | 14° /6° | 0.1 mm | 0 cm | |
| 3 Sept. | Overcast | 10° /6° | 11.1 mm | 0 cm | |
| 4 Sept. | Cloudy | 13° /7° | 13.8 mm | 0 cm | |
| 5 Sept. | Cloudy | 17° /7° | 0.1 mm | 0 cm | |
| 6 Sept. | Overcast | 17° /6° | 0 mm | 0 cm | |
| 7 Sept. | Sunny | 18° /7° | 0.1 mm | 0 cm | |
| 8 Sept. | Sunny | 16° /9° | 1.2 mm | 0 cm | |
| 9 Sept. | Partly cloudy | 16° /9° | 1.2 mm | 0 cm | |
| 10 Sept. | Partly cloudy | 13° /5° | 1.2 mm | 0 cm | |
| 11 Sept. | Light rain shower | 9° /3° | 1.6 mm | 0.4 cm | |
| 12 Sept. | Sunny | 9° /0° | 0.1 mm | 0 cm | |
| 13 Sept. | Partly cloudy | 8° /-1° | 0 mm | 0 cm | |
| 14 Sept. | Mist | 8° /1° | 0 mm | 0 cm | |
| 15 Sept. | Fog | 10° /3° | 0.1 mm | 0 cm | |
| 16 Sept. | Light drizzle | 8° /3° | 9.5 mm | 0 cm | |
| 17 Sept. | Sunny | 11° /2° | 0 mm | 0 cm | |
| 18 Sept. | Moderate rain | 10° /5° | 8.9 mm | 0 cm | |
| 19 Sept. | Light rain shower | 12° /4° | 7.6 mm | 0 cm | |
| 20 Sept. | Light drizzle | 11° /3° | 2.8 mm | 0 cm | |
| 21 Sept. | Light rain shower | 13° /6° | 10.2 mm | 0 cm | |
| 22 Sept. | Moderate rain | 12° /4° | 9.4 mm | 0 cm | |
| 23 Sept. | Patchy rain possible | 10° /3° | 0.2 mm | 0 cm | |
| 24 Sept. | Partly cloudy | 8° /1° | 6.5 mm | 0 cm | |
| 25 Sept. | Light rain shower | 9° /2° | 10.7 mm | 0 cm | |
| 26 Sept. | Mist | 8° /1° | 0.1 mm | 0 cm | |
| 27 Sept. | Heavy rain | 8° /3° | 14.1 mm | 0 cm | |
| 28 Sept. | Light rain shower | 7° /1° | 1.2 mm | 0 cm | |
| 29 Sept. | Patchy rain possible | 6° /0° | 0.3 mm | 0 cm | |
| 30 Sept. | Patchy rain possible | 7° /1° | 0.2 mm | 0 cm | |
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Important Notice
Our weather forecast for Tinn 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 Tinn forecast closer to your planned date for the most up-to-date weather information.
Tinn in September - FAQ
What are the expected maximum and minimum temperatures in Tinn during September?
Prepare for cooler days with highs just around 11° and colder nights, dipping below 4°.
How much rainfall should be expected in Tinn during September?
Significant rainfall exceeding 112.3 mm is expected in Tinn during September, occurring over more than 15 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Tinn in September 2025?
Tinn typically sees 0.475 cm of snowfall during September.
What are the typical wind conditions in Tinn during September?
The average wind speed in Tinn during September is 14 km/h, suggesting breezy to windy conditions, depending on your activities.
Tinn snow forecast September 2025
Track daily snowfall levels and discover Tinn’s snowy potential this September ❄️
September rainfall patterns in Tinn
Explore the daily rainfall trends and prepare for Tinns September weather 💧
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