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
Gromnik's average high-temperature decreases in September, falling from a warm 25.2°C (77.4°F) in August to a refreshing 19.6°C (67.3°F). Throughout the month of September, Gromnik observes an average nighttime temperature of 10.1°C (50.2°F).Humidity
In September, the average relative humidity in Gromnik is 74%.Rainfall
In Gromnik, in September, during 10.5 rainfall days, 28mm (1.1") of precipitation is typically accumulated. Throughout the year, in Gromnik, Poland, there are 131.2 rainfall days, and 389mm (15.31") of precipitation is accumulated.Snowfall
In Gromnik, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 37min.On the first day of September in Gromnik, sunrise is at 05:52 and sunset at 19:19. On the last day of the month, sunrise is at 06:35 and sunset at 18:16 CEST.
Sunshine
In September, the average sunshine in Gromnik is 8.1h.UV index
In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: In September, the maximum UV index of 4 translates into these guidelines:
Ensure safety - Recommendations to avert sunburn are presented. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Gromnik in September?
What is the average humidity in September in Gromnik?
How much does it rain in Gromnik in September?
When it does not snow in Gromnik?
Does it snow in Gromnik in September?
How many hours of daylight does Gromnik have in September?
When is the sunrise / sunset in September in Gromnik?
How many hours of sunshine does Gromnik have in September?
What is the UV index reading in September in Gromnik?
Average temperature in September
Gromnik, Poland
- Average high temperature in September: 19.6°C
The warmest month (with the highest average high temperature) is August (25.2°C).
The month with the lowest average high temperature is January (0.3°C).
- Average low temperature in September: 10.1°C
The month with the highest average low temperature is July (14.1°C).
The coldest month (with the lowest average low temperature) is January (-3.9°C).
Average pressure in September
Gromnik, Poland
- Average pressure in September: 1017.7mbar
The month with the highest atmospheric pressure is October (1019mbar).
The month with the lowest atmospheric pressure is July (1014.4mbar).
Average wind speed in September
Gromnik, Poland
- Average wind speed in September: 9.8km/h
The windiest month (with the highest average wind speed) is March (12.7km/h).
The calmest month (with the lowest average wind speed) is August (8.8km/h).
Average humidity in September
Gromnik, Poland
- Average humidity in September: 74%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is August (70%).
Average rainfall in September
Gromnik, Poland
- Average rainfall in September: 28mm
The wettest month (with the highest rainfall) is May (61mm).
The driest month (with the least rainfall) is March (18mm).
Average rainfall days in September
Gromnik, Poland
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in September
Gromnik, Poland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (87mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Gromnik, Poland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Gromnik, Poland
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 18min).
The month with the shortest days is December (Average daylight: 8h and 12min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 3h and 6min).
Average sunshine days in September
Gromnik, Poland
- Average sunshine days in September: 17.2 days
The month with the most sunshine days is November (17.9 days).
The months with the least sunshine days are February and June (11.6 days).
Average UV index in September
Gromnik, Poland
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are November and December (UV index 1).
Average cloud cover in September
Gromnik, Poland
- Average cloud cover in September: 40
The month with the most cloud cover is February (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Gromnik, Poland
- Average visibility in September: 9km
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January and February (8km).
