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NorwayThe weather in September in Tromsø
It's cool in September in Tromsø with an average temperature of 12°C. Temperatures this month range from a low of 10°C to a high of 14°C. At night, you can expect temperatures between 5°C and 9°C.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in September for Tromsø, Norway. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 22°C in 2019, Tromsø reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 3°C in 2018. The extreme nighttime temperatures ranged from a lowest recorded value of -1°C to a highest value of 14°C.
Water temperature
The water temperature at Tromsø is 12°C this month. This is too cold to swim without protective gear.
Precipitation and snowfall
In September, there is an average of 89 mm of precipitation, spread over 12 days. Of the total precipitation, about 1,2 cm falls as snow in September. The wind speed is around 4 Bft, mostly coming from the South.
Daily weather in September for Tromsø
Click on any day in September to get detailed info about the usual weather on that day in Tromsø. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| Tromsø | New York | |
|---|---|---|
| Average temperature | 12°C | 27°C |
| Max. temperature | 14°C | 31°C |
| Min. temperature | 5°C | -5°C |
| Total precipitation | 89 mm | 57 mm |
| Rainy days | 12 days | 9 days |
| Total snowfall | 1,2 cm | 0 cm |
| Snowy days | 1 day | 0 days |
Start of September
The month of September starts in Tromsø with cool temps, averaging around 13°C during the day and nights around 8°C.
Mid September
By mid-September, daytime temps drop to around 12°C, with nights around 7°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 Tromsø is around 11°C, while nighttime temps are about 6°C. A shower might pop up, but overall, the weather will be dry and sunny.
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UV index
The UV index is a maximum of 3 this month. That's a moderate value on the intensity scale of 1 to 11. Unprotected skin can burn in about 30 minutes.
Check out the climate of Tromsø 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.
Temperature charts
These charts show the average temperatures in September in Tromsø, Norway. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in Tromsø
Temperature in September in Tromsø over the years
Precipitation charts
These charts show the average amount of precipitation in September in Tromsø, Norway. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in September in Tromsø
Total precipitation in September in Tromsø over the years
Daily Snowfall in September in Tromsø
Snowfall in September in Tromsø per year
Daily UV index in September in Tromsø
This chart shows the average daily UV index in September in Tromsø, 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.
Weather experiences in September in Tromsø
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Average weather in Tromsø by month
Click on a month below to see detailed weather info for Tromsø. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.