Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
The commencement of September involves a temperature shift, with the average high-temperature dropping from a pleasant 21.5°C (70.7°F) in August to an enjoyable 16.2°C (61.2°F). During September, Tromsi observes a consistent average nighttime temperature of 8.1°C (46.6°F).Humidity
In Tromsi, the average relative humidity in September is 82%.Rainfall
In Tromsi, in September, it is raining for 15.3 days, with typically 32mm (1.26") of accumulated precipitation. Throughout the year, in Tromsi, there are 160.5 rainfall days, and 490mm (19.29") of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In Tromsi, Estonia, the average length of the day in September is 12h and 48min.On the first day of September, sunrise is at 06:12 and sunset at 20:09. On the last day of the month, sunrise is at 07:14 and sunset at 18:47 EEST.
Sunshine
The average sunshine in September in Tromsi is 7.1h.UV index
The average daily maximum UV index in September in Tromsi is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: An average maximum UV index of 3 in September leads to these recommendations:
Exercise care. People with light skin might get burns in fewer than 30 minutes. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Tromsi?
What is the average humidity in September in Tromsi?
How many days does it rain in September in Tromsi?
When it does not snow in Tromsi?
Does it snow in Tromsi in September?
How many hours of daylight does Tromsi have in September?
What time are sunrise and sunset in September in Tromsi?
How long on average sun shines in September in Tromsi?
What is the UV index intensity in September in Tromsi?
Average temperature in September
Tromsi, Estonia
- Average high temperature in September: 16.2°C
The warmest month (with the highest average high temperature) is July (23.1°C).
The month with the lowest average high temperature is January (-3.8°C).
- Average low temperature in September: 8.1°C
The month with the highest average low temperature is July (12.7°C).
The coldest month (with the lowest average low temperature) is January (-8°C).
Average pressure in September
Tromsi, Estonia
- Average pressure in September: 1015.1mbar
The month with the highest atmospheric pressure is October (1016.1mbar).
The month with the lowest atmospheric pressure is December (1011.6mbar).
Average wind speed in September
Tromsi, Estonia
- Average wind speed in September: 12.1km/h
The windiest month (with the highest average wind speed) is December (14.4km/h).
The calmest months (with the lowest average wind speed) are July and August (10.9km/h).
Average humidity in September
Tromsi, Estonia
- Average humidity in September: 82%
The months with the highest relative humidity are January and February (94%).
The month with the lowest relative humidity is May (72%).
Average rainfall in September
Tromsi, Estonia
- Average rainfall in September: 32mm
The wettest month (with the highest rainfall) is July (60mm).
The driest month (with the least rainfall) is April (28mm).
Average rainfall days in September
Tromsi, Estonia
- Average rainfall days in September: 15.3 days
The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is February (5.8 days).
Average snowfall in September
Tromsi, Estonia
- Average snowfall in September: 0mm
The month with the highest snowfall is February (190mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Tromsi, Estonia
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (19.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Tromsi, Estonia
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 18h and 6min).
The month with the shortest days is December (Average daylight: 6h and 36min).
- Average sunshine in September: 7h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 1h and 48min).
Average sunshine days in September
Tromsi, Estonia
- Average sunshine days in September: 11.5 days
The month with the most sunshine days is May (13.8 days).
The month with the least sunshine days is December (6.2 days).
Average UV index in September
Tromsi, Estonia
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover in September
Tromsi, Estonia
- Average cloud cover in September: 54
The months with the most cloud cover are February and December (Cloud cover 83).
The month with the least cloud cover is July (Cloud cover 41).
Average visibility in September
Tromsi, Estonia
- Average visibility in September: 8km
The months with the highest visibility are May, June, July and August (9km).
The months with the lowest visibility are January and February (6km).
